8444 + Interview Questions in Primary School in Physics Page 29 InterviewSolution

1401.	Yes my dear but why tell me
Answer» HAHAHA HAHA haha haha oooho oooho oooho oooho

1401.

Yes my dear but why tell me

Answer»

HAHAHA HAHA haha haha oooho oooho oooho oooho

Discussion

1402.	Define motion. Define motion solly.
Answer» ANSWER: HELLO akash good MORNING myself ayushi

1402.

Define motion. Define motion solly.

Answer»

ANSWER:

HELLO akash good MORNING

myself ayushi

Discussion

1403.	A stone is thrown vertically upwards with an initial velocity of 30 m/sec. Find the maximum height it reaches and the time taken by it to reach the height.(g = 10 m/s2).
Answer» Figure regards question: $\setlength{\unitlength}{1mm}\begin{picture}(7,2)\thicklines\multiput(7,2)(1,0){55}{\line(3,4){2}}\multiput(35,7)(0,4){12}{\line(0,1){0.5}}\put(10.5,6){\line(3,0){50}}\put(35,60){\circle{12}}\put(37,7){\large\sf{u = 30 m/s}}\put(37,55){\large\sf{v = 0 m/s}}\put(21,61){\large\textsf{\textbf{Stone}}}\put(43,40){\line(0, - 4){28}}\put(43,35){\vector(0,4){18}} {\pmb{\sf{BrainlyButterfliee}}}\put(24, - 3){\large\sf{$\sf g = -10 \: m/s^2$}}\put(48,30){\large\sf{t = ?}}\\ \\ \put(40,25){\large\sf{h = ?}}\end{picture}$ Understanding* the question: This question SAYS that there is a stone that is thrown vertically UPWARDS with an initial velocity of 30 m/sec. We are asked to take acceleration DUE to gravity (g) as 10 m/sec sq. And we are asked to find out the maximum height it reaches and the time taken by it to reach the height. Provided that: Initial velocity = 30 mps g = -10 mps sq. Final velocity = 0 mps Don't be confused! ✴️ Final velocity cames as zero because the stone is thrown upwards and at the highest POINT the final velocity will be zero. ✴️ We are taking g as negative because the stone is thrown vertically upward. It thrown upwards that is against gravity. To calculate: Maximum height Time taken Solution: Maximum height = 45 m Time taken = 3 sec Using concepts: ✴️ We can use either first equation of motion or acceleration formula to calculate the time taken. Choice may vary, yours! ✴️ To calculate maximum height we can use either SECOND equation of motion or third equation of motion. Choice may vary, yours! Using formulas: ✴️ The three equations of motion are mentioned below respectively: $\begin{gathered}\boxed{\begin{array}{c}\\ {\pmb{\sf{Three \: equations \: of \: motion}}} \\ \\ \sf \star \: v \: = u \: + at \\ \\ \sf \star \: s \: = ut + \: \dfrac{1}{2} \: at^2 \\ \\ \sf \star \: v^2 - u^2 \: = 2as\end{array}}\end{gathered}$ ✴️ The acceleration formula is mentioned below: ${\small{\underline{\boxed{\pmb{\sf{a \: = \dfrac{v-u}{t}}}}}}}$ Where, a denotes acceleration, v denotes final velocity, u denotes initial velocity and t denotes time taken. Required solution: ✡️ Firstly by using first equation of motion let us find out the time taken by the stone to reaches the maximum height! ${\sf{:\implies \vec{v} \: = \vec{u} + \vec{a}t}}$ ${\sf{:\implies 0 = 30 + (-10)t}}$ ${\sf{:\implies 0 = 30 - 10t}}$ ${\sf{:\implies 0 - 30 = -10t}}$ ${\sf{:\implies -30 = -10t}}$ ${\sf{:\implies 30 = 10t}}$ ${\sf{:\implies t \: = 3 \: sec}}$ ${\sf{:\implies Time \: taken \: = 3 \: sec}}$ Therefore, time taken to reaches the maximum height = 3 sec! ✡️ By using acceleration formula let us find out the time taken now! $:\implies \sf Acceleration \: = \dfrac{dv}{dt} \\ \\ :\implies \sf Acceleration \: = \dfrac{\Delta v}{t} \\ \\ :\implies \sf Acceleration \: = \dfrac{Change \: in \: velocity}{Time \: taken} \\ \\ :\implies \sf \vec{a} = \dfrac{\vec{v} - \vec{u}}{t} \\ \\ :\implies \sf -10 = \dfrac{0-30}{t} \\ \\ :\implies \sf -10 = \dfrac{-30}{t} \\ \\ :\implies \sf t = \dfrac{-30}{-10} \\ \\ :\implies \sf t = \dfrac{30}{10} \\ \\ :\implies \sf t \: = 3 \: sec \\ \\ :\implies \sf Time \: taken \: = 3 \: seconds$ Therefore, time taken to reaches the maximum height = 3 sec! Choice may vary and yours! ✡️ Now let us find out the maximum height by using third equation of motion! $:\implies \sf \vec{v}^{2} - \vec{u}^{2} \: = 2\vec{a}s \\ \\ :\implies \sf (0)^{2} - (30)^{2} = 2(-10)(s) \\ \\ :\implies \sf 0 - 900 = -20s \\ \\ :\implies \sf -900 = -20s \\ \\ :\implies \sf 900 = 20s \\ \\ :\implies \sf \dfrac{900}{20} \: = s \\ \\ :\implies \sf \dfrac{90}{2} \: = s \\ \\ :\implies \sf s \: = 45 \: m \\ \\ :\implies \sf Distance \: = 45 \: m$ Therefore, distance = 45 m! ✡️ Now by using second equation of motion let us calculate the maximum height! $:\implies \sf s \: = \vec{u}t + \dfrac{1}{2} \: \vec{a}t^2 \\ \\ :\implies \sf s \: = 30(3) + \dfrac{1}{2} \times (-10)(3)^{2} \\ \\ :\implies \sf s \: = 90 + \dfrac{1}{2} \times (-10)(9) \\ \\ :\implies \sf s \: = 90 + \dfrac{1}{2} \times -90 \\ \\ :\implies \sf s \: = 90 + 1 \times -45 \\ \\ :\implies \sf s \: = 90 - 45 \\ \\ :\implies \sf s \: = 45 \: m \\ \\ :\implies \sf Distance \: = 45 \: m$ Therefore, distance = 45 m! Choice may vary and yours!

1403.

A stone is thrown vertically upwards with an initial velocity of 30 m/sec. Find the maximum height it reaches and the time taken by it to reach the height.(g = 10 m/s2).

Answer»

Figure regards question:

$\setlength{\unitlength}{1mm}\begin{picture}(7,2)\thicklines\multiput(7,2)(1,0){55}{\line(3,4){2}}\multiput(35,7)(0,4){12}{\line(0,1){0.5}}\put(10.5,6){\line(3,0){50}}\put(35,60){\circle*{12}}\put(37,7){\large\sf{u = 30 m/s}}\put(37,55){\large\sf{v = 0 m/s}}\put(21,61){\large\textsf{\textbf{Stone}}}\put(43,40){\line(0, - 4){28}}\put(43,35){\vector(0,4){18}} {\pmb{\sf{BrainlyButterfliee}}}\put(24, - 3){\large\sf{$\sf g = -10 \: m/s^2$}}\put(48,30){\large\sf{t = ?}}\\ \\ \put(40,25){\large\sf{h = ?}}\end{picture}$

Understanding the question: This question SAYS that there is a stone that is thrown vertically UPWARDS with an initial velocity of 30 m/sec. We are asked to take acceleration DUE to gravity (g) as 10 m/sec sq. And we are asked to find out the maximum height it reaches and the time taken by it to reach the height.

Provided that:

Initial velocity = 30 mps
g = -10 mps sq.
Final velocity = 0 mps

Don't be confused!

✴️ Final velocity cames as zero because the stone is thrown upwards and at the highest POINT the final velocity will be zero.

✴️ We are taking g as negative because the stone is thrown vertically upward. It thrown upwards that is against gravity.

To calculate:

Maximum height
Time taken

Solution:

Maximum height = 45 m
Time taken = 3 sec

Using concepts:

✴️ We can use either first equation of motion or acceleration formula to calculate the time taken.

Choice may vary, yours!

✴️ To calculate maximum height we can use either SECOND equation of motion or third equation of motion.

Choice may vary, yours!

Using formulas:

✴️ The three equations of motion are mentioned below respectively:

$\begin{gathered}\boxed{\begin{array}{c}\\ {\pmb{\sf{Three \: equations \: of \: motion}}} \\ \\ \sf \star \: v \: = u \: + at \\ \\ \sf \star \: s \: = ut + \: \dfrac{1}{2} \: at^2 \\ \\ \sf \star \: v^2 - u^2 \: = 2as\end{array}}\end{gathered}$

✴️ The acceleration formula is mentioned below:

${\small{\underline{\boxed{\pmb{\sf{a \: = \dfrac{v-u}{t}}}}}}}$

Where, a denotes acceleration, v denotes final velocity, u denotes initial velocity and t denotes time taken.

Required solution:

✡️ Firstly by using first equation of motion let us find out the time taken by the stone to reaches the maximum height!

${\sf{:\implies \vec{v} \: = \vec{u} + \vec{a}t}}$

${\sf{:\implies 0 = 30 + (-10)t}}$

${\sf{:\implies 0 = 30 - 10t}}$

${\sf{:\implies 0 - 30 = -10t}}$

${\sf{:\implies -30 = -10t}}$

${\sf{:\implies 30 = 10t}}$

${\sf{:\implies t \: = 3 \: sec}}$

${\sf{:\implies Time \: taken \: = 3 \: sec}}$

Therefore, time taken to reaches the maximum height = 3 sec!

✡️ By using acceleration formula let us find out the time taken now!

$:\implies \sf Acceleration \: = \dfrac{dv}{dt} \\ \\ :\implies \sf Acceleration \: = \dfrac{\Delta v}{t} \\ \\ :\implies \sf Acceleration \: = \dfrac{Change \: in \: velocity}{Time \: taken} \\ \\ :\implies \sf \vec{a} = \dfrac{\vec{v} - \vec{u}}{t} \\ \\ :\implies \sf -10 = \dfrac{0-30}{t} \\ \\ :\implies \sf -10 = \dfrac{-30}{t} \\ \\ :\implies \sf t = \dfrac{-30}{-10} \\ \\ :\implies \sf t = \dfrac{30}{10} \\ \\ :\implies \sf t \: = 3 \: sec \\ \\ :\implies \sf Time \: taken \: = 3 \: seconds$

Therefore, time taken to reaches the maximum height = 3 sec!

Choice may vary and yours!

✡️ Now let us find out the maximum height by using third equation of motion!

$:\implies \sf \vec{v}^{2} - \vec{u}^{2} \: = 2\vec{a}s \\ \\ :\implies \sf (0)^{2} - (30)^{2} = 2(-10)(s) \\ \\ :\implies \sf 0 - 900 = -20s \\ \\ :\implies \sf -900 = -20s \\ \\ :\implies \sf 900 = 20s \\ \\ :\implies \sf \dfrac{900}{20} \: = s \\ \\ :\implies \sf \dfrac{90}{2} \: = s \\ \\ :\implies \sf s \: = 45 \: m \\ \\ :\implies \sf Distance \: = 45 \: m$

Therefore, distance = 45 m!

✡️ Now by using second equation of motion let us calculate the maximum height!

$:\implies \sf s \: = \vec{u}t + \dfrac{1}{2} \: \vec{a}t^2 \\ \\ :\implies \sf s \: = 30(3) + \dfrac{1}{2} \times (-10)(3)^{2} \\ \\ :\implies \sf s \: = 90 + \dfrac{1}{2} \times (-10)(9) \\ \\ :\implies \sf s \: = 90 + \dfrac{1}{2} \times -90 \\ \\ :\implies \sf s \: = 90 + 1 \times -45 \\ \\ :\implies \sf s \: = 90 - 45 \\ \\ :\implies \sf s \: = 45 \: m \\ \\ :\implies \sf Distance \: = 45 \: m$

Therefore, distance = 45 m!

Choice may vary and yours!

Discussion

1404.	Column A Column Ba) Foot 1) areab) Newton 2) temperaturec) Fahrenheit 3) massd) Pound 4) forcee) Hectare 5) lengthMATCH THE FOLLOWING!!
Answer» Answer: a)foot 5)length b)NEWTON 4)force c)Fahrenheit 2)temperature d)POUND 3)Mass e)HECTARE 1)area Explanation: pl mark as brainliest

1404.

Column A Column Ba) Foot 1) areab) Newton 2) temperaturec) Fahrenheit 3) massd) Pound 4) forcee) Hectare 5) lengthMATCH THE FOLLOWING!!

Answer»

Answer:

a)foot 5)length

b)NEWTON 4)force

c)Fahrenheit 2)temperature

d)POUND 3)Mass

e)HECTARE 1)area

Explanation:

pl mark as brainliest

Discussion

1405.	What is the evidence that the Earth behaves as a magnet ?
Answer» ANSWER: if we fall anything from a height Plz MARK me BRRAINLIST I NEED one BRRAINLIST answer to become RANK

1405.

What is the evidence that the Earth behaves as a magnet ?

Answer»

ANSWER:

if we fall anything from a height Plz MARK me BRRAINLIST I NEED one BRRAINLIST answer to become RANK

Discussion

1406.	Why do some fibres are called synthetic? Explain.
Answer» Some fibres are made by human beings and not OBTAINED from plants and animals. These fibres are obtained by chemical PROCESSING of PETROCHEMICALS.. That is why some fibres are called SYNTHETIC or man-made fibres

Discussion

1407.	@kokkiearmy, those are a lot, it's ok i don't need so many thanks
Answer» ANSWER: Annyeongseyo HAPPY JUNGKOOKIE day Saranghaeyo (＾-＾)

1407.

@kokkiearmy, those are a lot, it's ok i don't need so many thanks

Answer»

ANSWER:

Annyeongseyo

HAPPY JUNGKOOKIE day

Saranghaeyo (＾-＾)

Discussion

1408.	@kokkiearmyhey, fine... welcome
Answer» ANSWER: are you fine Explanation: MARK as BRAINLIEST please❤️❤️ Mark as brainliest please❤️❤️ Mark as brainliest please❤️❤️

1408.

@kokkiearmyhey, fine... welcome

Answer»

ANSWER:

are you fine

Explanation:

MARK as BRAINLIEST please❤️❤️

Mark as brainliest please❤️❤️

Discussion

1409.	Oh my life tere liye mai duniya bhul jauteleko kese bhulunhi bhuli mai tera hi intezarr tha heheheeeheheheeekesi ho
Answer» ANSWER: Bhkk jaa katti MAI BAAT NHI kruಥ‿ಥ apna brkup.·´¯`(>▂<)´¯`·.

1409.

Oh my life tere liye mai duniya bhul jauteleko kese bhulunhi bhuli mai tera hi intezarr tha heheheeeheheheeekesi ho

Answer»

ANSWER:

Bhkk jaa

katti

MAI BAAT NHI kruಥ‿ಥ

apna brkup.·´¯`(>▂<)´¯`·.

Discussion

1410.	What do you meant by density
Answer» ANSWER: Density, mass of a unit volume of a MATERIAL substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic METRE.

1410.

What do you meant by density

Answer»

ANSWER:

Density, mass of a unit volume of a MATERIAL substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic METRE.

Discussion

1411.	What is Environment??No spam!!
Answer» ANSWER: MARK MY BRAINLIEST ANSWER PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ

1411.

What is Environment??No spam!!

Answer»

ANSWER:

MARK MY BRAINLIEST ANSWER PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ

Discussion

1412.	a man running around a circular track of radius 20 m covers one complete round in 40 s . calculate the distance and displacement covered by him in 3 minutes
Answer» ANSWER: RADIUS of circular track = 20 so the circumference = 2 $\pi$ r =2×22×20/7 =125.663m approx. so it means he complete 125.663 in 40sec so now round cover by him in 3 min or 180 sec. = 180/4×125.663 =5654.835 m. EXPLANATION:

1412.

a man running around a circular track of radius 20 m covers one complete round in 40 s . calculate the distance and displacement covered by him in 3 minutes

Answer»

ANSWER:

RADIUS of circular track = 20

so the circumference = 2 $\pi$ r

=2×22×20/7

=125.663m approx.

so it means he complete 125.663 in 40sec

so now round cover by him in 3 min or 180 sec.

= 180/4×125.663

=5654.835 m.

EXPLANATION:

Discussion

1413.	Hi friends good morninghave a great dayhow are you all
Answer» *HEY* *DEAR* *good* *MORNING* *have* a *great* *DAY* *ahead*

Discussion

1414.	What is oscillation of the pendulum?
Answer» ANSWER: PLEASE MARK as BRAINLIST

1414.

What is oscillation of the pendulum?

Answer»

ANSWER:

PLEASE MARK as BRAINLIST

Discussion

1415.	5. Find the rise in temperature of 1Kg water it 1Kcal heat is supplied to it. The specific heat of water = 1 cal/g°Cif anyone know this please help me
Answer» ANSWER: Correct OPTION is A ( 4186 1000 ) o C We C=4.186 Joule / gram ∴ △T= C×m Q = 4.186×1000 1000 =( 4186 1000 ) 0 C Explanation: mark me as BRIANLIST

1415.

5. Find the rise in temperature of 1Kg water it 1Kcal heat is supplied to it. The specific heat of water = 1 cal/g°Cif anyone know this please help me

Answer»

ANSWER:

Correct OPTION is

A

(

4186

1000

)

o

C

We C=4.186 Joule / gram

∴ △T=

C×m

Q

=

4.186×1000

1000

=(

4186

1000

)

0

C

Explanation:

mark me as BRIANLIST

Discussion

1416.	Explain Galilleo s experiment to show Newtons first law of motion
Answer» Answer: Galileo's Experiment: Galileo noticed that if he dropped a ball on a curved smooth surface that it would nearly REACH the same height on the other side. He tried it again with a ROUGH and a very smooth surface. The rougher the surface the less the ball was likely to reach the same height.Galileo deduced that objects move with CONSTANT speed when no force acts on them. This was the BASIS for Newton's first law of motion.

1416.

Explain Galilleo s experiment to show Newtons first law of motion

Answer»

Answer:

Galileo's Experiment: Galileo noticed that if he dropped a ball on a curved smooth surface that it would nearly REACH the same height on the other side. He tried it again with a ROUGH and a very smooth surface. The rougher the surface the less the ball was likely to reach the same height.Galileo deduced that objects move with CONSTANT speed when no force acts on them. This was the BASIS for Newton's first law of motion.

Discussion

1417.	An electric fan convertschemical energy mechanical energy light energy mechanical energy into electrical
Answer» Answer: An electric fan converts Kinetic energy which means Chemical energe

1417.

An electric fan convertschemical energy mechanical energy light energy mechanical energy into electrical

Answer»

Answer:

An electric fan converts Kinetic energy which means Chemical energe

Discussion

1418.	i too know jimin that she is very truth to all but she is not saying to anyone why she is sad she is not eating properly and not talking to anyone in school she is just sad she say to me everything but she is not saying why she is sad
Answer» She wants to TELL me why she was sad. but my mom tell me not to USE phone for a long time so I GO offline at that time. but I really WANT to know why she is sad.

1418.

i too know jimin that she is very truth to all but she is not saying to anyone why she is sad she is not eating properly and not talking to anyone in school she is just sad she say to me everything but she is not saying why she is sad

Answer»

She wants to TELL me why she was sad.

but my mom tell me not to USE phone for a long time so I GO offline at that time.

but I really WANT to know why she is sad.

Discussion

1419.	My are you in pain jimin answer me yar
Answer» YES I am in pain i want to know why my FRIEND is sad. she thinks everyone TELLS her RUDE and selfish. but she is so kind, positive,and truthy. I love her

1419.

My are you in pain jimin answer me yar

Answer»

YES I am in pain

i want to know why my FRIEND is sad.

she thinks everyone TELLS her RUDE and selfish.

but she is so kind, positive,and truthy.

I love her

Discussion

1420.	Guys do u all think that im ur friend but no because im her sis and im handling it she is sad from yesterdaylaughing when mom is near but she is crying inside
Answer» I don't about U so UR not my FRIEND..

Discussion

1421.	Guys did you all see jk live but i missed it but jk cut's cake and he eat it hahahaha
Answer» Yesss omg he's so preciousss his voice his LOOK his personality everything is just perfect and EVEN the lil song he MADE with armyyyy ourr baby bunny is SOO ADORABLE <3333 I hope you have a bangtasctic day

1421.

Guys did you all see jk live but i missed it but jk cut's cake and he eat it hahahaha

Answer»

Yesss omg he's so preciousss his voice his LOOK his personality everything is just perfect and EVEN the lil song he MADE with armyyyy ourr baby bunny is SOO ADORABLE <3333

I hope you have a bangtasctic day

Discussion

1422.	hey u blo..ody what are u thin..king ur aski..ng m..e da..ily im not such ty..pe of gi..rl if you go and ask ur fa..mily
Answer» ATHE ENNE EKE NI marano?

1422.

hey u blo..ody what are u thin..king ur aski..ng m..e da..ily im not such ty..pe of gi..rl if you go and ask ur fa..mily

Answer»

ATHE ENNE EKE NI marano?

Discussion

1423.	FILL IN THE BLANKS1)The atmospheric pressure ------------------------- as we go up.2) As we go deeper beneath the surface of a liquid, the liquid pressure ---------------------.3) The layer of air surrounds the Earth is known as -------------------.
Answer» Answer: 1. INCREASES 2.increases 3. ATMOSPHERE

1423.

FILL IN THE BLANKS1)The atmospheric pressure ------------------------- as we go up.2) As we go deeper beneath the surface of a liquid, the liquid pressure ---------------------.3) The layer of air surrounds the Earth is known as -------------------.

Answer»

Answer:

1. INCREASES

2.increases

3. ATMOSPHERE

Discussion

1424.	Please help me out with this. No spamming with wrong answers
Answer» F. 2.Water clocks worked better than SUNDIALS because they told the time at night as well as during the day. They were also more accurate; however, since the rate of flow of water is very DIFFICULT to control accurately, a clock based on that flow can never really achieve excellent accuracy. 4. Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a HIGH speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time. The SI unit of speed is the metre per second, but the most COMMON unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. SI unit: m/s, m s−1 Dimension: L T−1 Common symbols: v please ask 1 by 1 question & in written form also

1424.

Please help me out with this. No spamming with wrong answers

Answer»

F.

2.Water clocks worked better than SUNDIALS because they told the time at night as well as during the day. They were also more accurate; however, since the rate of flow of water is very DIFFICULT to control accurately, a clock based on that flow can never really achieve excellent accuracy.

4. Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a HIGH speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.

The SI unit of speed is the metre per second, but the most COMMON unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour.

SI unit: m/s, m s−1

Dimension: L T−1

Common symbols: v

please ask 1 by 1 question & in written form also

Discussion

1425.	write down the precautions that should be kept in mind while using clinical thermometer and laboratory thermometer
Answer» ANSWER: METTING I'd:7233892033 pswd:12345 for g.i.r.l.s Explanation: metting I'd:7233892033 pswd:12345 for g.i.r.l.s

1425.

write down the precautions that should be kept in mind while using clinical thermometer and laboratory thermometer

Answer»

ANSWER:

METTING I'd:7233892033 pswd:12345 for g.i.r.l.s

Explanation:

metting I'd:7233892033 pswd:12345 for g.i.r.l.s

Discussion

1426.	A vehicle is moving with a velocity of 9.8 m/s, whose mass is 200 kg. What is the magnitude of force required to stop the vehicle in 10 sec?
Answer» Answer: Given MASS of the vehicle(m)=120 kg and initial VELOCITY u= 90 km/h u=90km/h=90×( 18 5 )=25 m/s As the vehicle is needed to be stopped in 10 SECONDS the final velocity will be =0 m/s. We know acceleration= time Final−initialvelocity = 10 0−25 =−2.5m/s 2 And also Force= mass×acceleration =120×(−2.5)=−300N {The negative sign implies that the force is applied in the direction opposite to that of the direction of motion} EXPLANATION:

1426.

A vehicle is moving with a velocity of 9.8 m/s, whose mass is 200 kg. What is the magnitude of force required to stop the vehicle in 10 sec?

Answer»

Answer:

Given MASS of the vehicle(m)=120 kg and initial VELOCITY u= 90 km/h

u=90km/h=90×(

18

5

)=25 m/s

As the vehicle is needed to be stopped in 10 SECONDS the final velocity will be =0 m/s.

We know acceleration=

time

Final−initialvelocity

=

10

0−25

=−2.5m/s

2

And also Force= mass×acceleration

=120×(−2.5)=−300N

{The negative sign implies that the force is applied in the direction opposite to that of the direction of motion}

EXPLANATION:

Discussion

1427.	How is a Zinc written in a symbolic form.
Answer» ANSWER: In symoblic FORM ZINC is WRITTEN as Zn mark as BRAINLIEST.

1427.

How is a Zinc written in a symbolic form.

Answer»

ANSWER:

In symoblic FORM ZINC is WRITTEN as Zn

mark as BRAINLIEST.

Discussion

1428.	A car moves along a circular track of radius 14m. It completes 1 revolution in 20seconds. Calculate the distance the car covers if it travels for duration of 90 seconds. (a) 300 m(b) 400 m(c) 308 m(d) 396 m
Answer» Answer: 396m Explanation: r=14m circumference=2pir == 2×22÷7×14 ==2×22×2 ==88m 88m in 20sec. therefore __m in 90sec. 88×90÷20(alternendo) answer=396m hope it HELPS

1428.

A car moves along a circular track of radius 14m. It completes 1 revolution in 20seconds. Calculate the distance the car covers if it travels for duration of 90 seconds. (a) 300 m(b) 400 m(c) 308 m(d) 396 m

Answer»

Answer:

396m

Explanation:

r=14m

circumference=2pir

== 2×22÷7×14

==2×22×2

==88m

88m in 20sec.

therefore __m in 90sec.

88×90÷20(alternendo)

answer=396m

hope it HELPS

Discussion

1429.	Expanded universal science class 8
Answer» EXPLANATION: above is the EXPANDED UNIVERSAL SCIENCE CLASS 8 book

1429.

Expanded universal science class 8

Answer»

EXPLANATION:

above is the EXPANDED UNIVERSAL SCIENCE CLASS 8

book

Discussion

1430.	Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.
Answer» TAKE some water in the beaker. Suspend a thermometer in a beaker in water so that the bulb of the thermometer remains in water without touching the bottom or the sides. Supply the HEAT by the burner and note the TEMPERATURE at room temperature. Maintain the record of temperature after every minute. Temperature rises and as it reaches 100°C water starts boiling. Though heat is being SUPPLIED, the temperature does not RISE and it remains constant at 100°C and bubbles formed are seen. Conclusion: boiling point of water is 100°C and at boiling point heat supplied is absorbed by water at constant temperature.

1430.

Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.

Answer»

TAKE some water in the beaker. Suspend a thermometer in a beaker in water so that the bulb of the thermometer remains in water without touching the bottom or the sides. Supply the HEAT by the burner and note the TEMPERATURE at room temperature.

Maintain the record of temperature after every minute.

Temperature rises and as it reaches 100°C water starts boiling. Though heat is being SUPPLIED, the temperature does not RISE and it remains constant at 100°C and bubbles formed are seen.

Conclusion: boiling point of water is 100°C and at boiling point heat supplied is absorbed by water at constant temperature.

Discussion

1431.	What are the different units to measure speed? when is each unit used
Answer» ANSWER: SORY I do not KNOW the answer

1431.

What are the different units to measure speed? when is each unit used

Answer»

ANSWER:

SORY I do not KNOW the answer

Discussion

1432.	A girl starts from position A follows asemi circular path and reachesthe other end B. Find the displacement &distance
Answer» Answer: EXPLANATION: the distance will be the circumference of the semi-circular path that is PIE r , where r is the RADIUS of that SEMICIRCLE . while its displacement will be the shortest distance between its initial and final position that is its dimeter.

1432.

A girl starts from position A follows asemi circular path and reachesthe other end B. Find the displacement &distance

Answer»

Answer:

EXPLANATION: the distance will be the circumference of the semi-circular path that is PIE r , where r is the RADIUS of that SEMICIRCLE . while its displacement will be the shortest distance between its initial and final position that is its dimeter.

Discussion

1433.	5. The shape and size of a body on which action takes place can also be changed due toA. velocityC. forceB. momentumD. weight
Answer» $\bold\red{QUESTION}$ The SHAPE and size of a body on which action takes place can also be changed due to _______ $\bold\red{OPTIONS}$ A. velocity B. momentum C. Force D. weight $\bold\red{ANSWER}$ [C] Force $\bold\red{EXPLANATION}$ The motion imparted to OBJECTS was due to the action of a force. The international UNIT used to measure force is NEWTON. A force can change the shape and size of an object.

1433.

5. The shape and size of a body on which action takes place can also be changed due toA. velocityC. forceB. momentumD. weight

Answer»

$\bold\red{QUESTION}$

The SHAPE and size of a body on which action takes place can also be changed due to _______

$\bold\red{OPTIONS}$

A. velocity

B. momentum

C. Force

D. weight

$\bold\red{ANSWER}$

[C] Force

$\bold\red{EXPLANATION}$

The motion imparted to OBJECTS was due to the action of a force. The international UNIT used to measure force is NEWTON. A force can change the shape and size of an object.

Discussion

1434.	Convert the following 25 mm in to dm. step by step
Answer» Question : Convert 25 mm in to dm. Given : The given METRIC measure is 25mm To Convert : 25mm to dm CONVERSION Used : $\textsf{1 mm }=10^{-2}dm$ $\textsf{1mm=10}^{-3}\\\\\\\textsf{1dm=10}^{-1}\\\\\\=10^{-3}\:mm={10}^{-1}dm\\\\\\=1dm={10}^{-3}\div10^{-1}mm\\\\\\=1dm={10}^{-3}\times10^{+1}\\\\\\\to a^m\times a^n=a^{m+n}\\\\\\=10^{-3+1}\\\\\\=10^{-2}\\\\\\$ SOLUTION : $\textsf{1 mm }=10^{-2}dm\\\\\\=\textsf{25mm}=10^{-2}\times 25\\\\\\\to a^{-n}=(\frac{1}{a})^n\\\\\\=(\frac{1}{10})^2\times25\\\\\\\to (\frac{a}{b})^m=\frac{a^m}{b^m}\\\\\\=\frac{1^2}{10^2}\times25\\\\\\=\frac{1}{100}\times25\\\\\\=\frac{25}{100}\\\\\\=0.25\: dm\\\\\\\boxed{=0.25\: dm}$ Answer : 25 mm = 0.25 dm Metric PREFIX and SUFFIX Table $\boxed{\begin{array}{\|c\|c\|c\|c\|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{12} & \sf tera & T& 1\:\:000\:\:000\:\:000\:\:000\\ &&& \\ \cline {1-4} \sf 10^9 & \sf \sf giga& G& 1\:\:000\:\:000 \:\:000\\ &&& \\ \cline {1-4} \sf 10^6 & \sf mega& M& 1\:\:000\:\:000\\ &&& \\ \cline {1-4} \sf 10^3 & \sf kilo& K& 1\:\:000\\ &&& \\ \cline {1-4}\end{array}}$ $\boxed{\begin{array}{\|c\|c\|c\|c\|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{2} & \sf hecto& H& 100\\ &&& \\ \cline {1-4} \sf 10^1 & \sf \sf Deka& D& 10\\ &&& \\ \cline {1-4} \sf 10^{-1} & \sf deci& d& 0.1\\ &&& \\ \cline {1-4} \sf 10^{-2} & \sf centi& c& 0.01\\ &&& \\ \cline {1-4}\end{array}}$ $\boxed{\begin{array}{\|c\|c\|c\|c\|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{-3} & \sf milli& m& 0.00q\\ &&& \\ \cline {1-4} \sf 10^{-6} & \sf \sf micro& \µ& 0.000\:\:001\\ &&& \\ \cline {1-4} \sf 10^{-9} & \sf nano & n& 0.000\:\:000\:\001\\ &&& \\ \cline {1-4} \sf 10^{-12} & \sf pico& p& 0.000\:\:000\:\:000\:\001\\ &&& \\ \cline {1-4}\end{array}}$ Be Brainly!

1434.

Convert the following 25 mm in to dm. step by step

Answer»

Question :

Convert 25 mm in to dm.

Given :

The given METRIC measure is 25mm

To Convert :

25mm to dm

CONVERSION Used :

$\textsf{1 mm }=10^{-2}dm$

$\textsf{1mm=10}^{-3}\\\\\\\textsf{1dm=10}^{-1}\\\\\\=10^{-3}\:mm={10}^{-1}dm\\\\\\=1dm={10}^{-3}\div10^{-1}mm\\\\\\=1dm={10}^{-3}\times10^{+1}\\\\\\\to a^m\times a^n=a^{m+n}\\\\\\=10^{-3+1}\\\\\\=10^{-2}\\\\\\$

SOLUTION :

$\textsf{1 mm }=10^{-2}dm\\\\\\=\textsf{25mm}=10^{-2}\times 25\\\\\\\to a^{-n}=(\frac{1}{a})^n\\\\\\=(\frac{1}{10})^2\times25\\\\\\\to (\frac{a}{b})^m=\frac{a^m}{b^m}\\\\\\=\frac{1^2}{10^2}\times25\\\\\\=\frac{1}{100}\times25\\\\\\=\frac{25}{100}\\\\\\=0.25\: dm\\\\\\\boxed{=0.25\: dm}$

Answer :

25 mm = 0.25 dm

Metric PREFIX and SUFFIX Table

$\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{12} & \sf tera & T& 1\:\:000\:\:000\:\:000\:\:000\\ &&& \\ \cline {1-4} \sf 10^9 & \sf \sf giga& G& 1\:\:000\:\:000 \:\:000\\ &&& \\ \cline {1-4} \sf 10^6 & \sf mega& M& 1\:\:000\:\:000\\ &&& \\ \cline {1-4} \sf 10^3 & \sf kilo& K& 1\:\:000\\ &&& \\ \cline {1-4}\end{array}}$

$\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{2} & \sf hecto& H& 100\\ &&& \\ \cline {1-4} \sf 10^1 & \sf \sf Deka& D& 10\\ &&& \\ \cline {1-4} \sf 10^{-1} & \sf deci& d& 0.1\\ &&& \\ \cline {1-4} \sf 10^{-2} & \sf centi& c& 0.01\\ &&& \\ \cline {1-4}\end{array}}$

$\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Factor} & \sf \Large {Na me} & \Large \sf{Symbol} & \Large\sf {Numerical Value } \\ &&& \\ \cline {1-4} \sf 10^{-3} & \sf milli& m& 0.00q\\ &&& \\ \cline {1-4} \sf 10^{-6} & \sf \sf micro& \µ& 0.000\:\:001\\ &&& \\ \cline {1-4} \sf 10^{-9} & \sf nano & n& 0.000\:\:000\:\001\\ &&& \\ \cline {1-4} \sf 10^{-12} & \sf pico& p& 0.000\:\:000\:\:000\:\001\\ &&& \\ \cline {1-4}\end{array}}$

Be Brainly!

Discussion

1435.	Convert the following 25 mm in to dm
Answer» ANSWER: 0.25 dm. Explanation:

1435.

Convert the following 25 mm in to dm

Answer»

ANSWER:

0.25 dm.

Explanation:

Discussion

1436.	The values of current I flowing in a given resistor for the corresponding values ofpotential difference V across the resistor are given below – (2V 0.8 1.6 2.4 3.2 4.0I 0.2 0.4 0.6 0.8 1.0Plot V – I graph and calculate the resistance of that resistor
Answer» MUJHE nhi PATA aap hi bata do YAA KOI btatdega

Discussion

1437.	Abdul,while driving to school,computes the average speed for his trip to be 20km/h.On his return trip along the same route,there is less traffic and the average speed is 30km/h.What is the average speed for Abdul's trip? Pls do calculation as well and pls answer past
Answer» Answer: 25km /HR is the AVERAGE SPEED of ABDUL

1437.

Abdul,while driving to school,computes the average speed for his trip to be 20km/h.On his return trip along the same route,there is less traffic and the average speed is 30km/h.What is the average speed for Abdul's trip? Pls do calculation as well and pls answer past

Answer»

Answer:

25km /HR is the AVERAGE SPEED of ABDUL

Discussion

1438.	What number must be subtracted fromeach term of the ratio 5 : 7 so that the ratiobecomes 2 : 3 ?koi baat ni thik hojaiga sabh syd koi misunderstanding ho..!
Answer» ANSWER: The answer is 1 Explanation: 5-1/7-1 = 4/6 = 2/3

1438.

What number must be subtracted fromeach term of the ratio 5 : 7 so that the ratiobecomes 2 : 3 ?koi baat ni thik hojaiga sabh syd koi misunderstanding ho..!

Answer»

ANSWER:

The answer is 1

Explanation:

5-1/7-1 = 4/6 = 2/3

Discussion

1439.	two brass balls of masses 2kg and 5kg experiments a force of attraction of 10N when the distance between their centers is doubled. The force of attraction
Answer» Given Masses = 2 kg & 5 kg Force of ATTRACTION = 10 N Distance between their centers is being doubled To Find The Force of attraction Solution ☯ GMm/r² = Gravitational Force The above FORMULA is used to find the Gravitational Force between TWO bodies of masses M & m ━━━━━━━━━━━━━━━━━━━━━━━━━ ✭ According to the Question : ➞ g = GMm/r² = 10 N -eq(1) And, ➞ g' = GMm/(2r)² ➞ g' = GMm/4r² -eq(2) From eq(1) & eq(2) ➞ N = 10/4 ➞ N = 5/2 N ∴ The gravitational force WOULD be 5/2 N

1439.

two brass balls of masses 2kg and 5kg experiments a force of attraction of 10N when the distance between their centers is doubled. The force of attraction

Answer»

Given

Masses = 2 kg & 5 kg
Force of ATTRACTION = 10 N
Distance between their centers is being doubled

To Find

The Force of attraction

Solution

☯ GMm/r² = Gravitational Force

The above FORMULA is used to find the Gravitational Force between TWO bodies of masses M & m

━━━━━━━━━━━━━━━━━━━━━━━━━

✭ According to the Question :

➞ g = GMm/r² = 10 N -eq(1)

And,

➞ g' = GMm/(2r)²

➞ g' = GMm/4r² -eq(2)

From eq(1) & eq(2)

➞ N = 10/4

➞ N = 5/2 N

∴ The gravitational force WOULD be 5/2 N

Discussion

1440.	what is physics?I don't dream. hehe I'll pray ur dreams come trueand u have a successful life
Answer» Answer: OKAY U don't dream but MAKE goals yea hope 4 the best and u too have successfull lifeu

1440.

what is physics?I don't dream. hehe I'll pray ur dreams come trueand u have a successful life

Answer»

Answer:

OKAY U don't dream

but MAKE goals

yea hope 4 the best

and u too have successfull lifeu

Discussion

1441.	a motorcyclist drives from Delhi to Gore gram covering a distance of 63 kilometre in 1 hour 45 minutes calculate his average speed
Answer» Explanation: The word 'democracy' has its ORIGINS in the Greek language. It combines two shorter words: 'demos' meaning whole citizen living within a particular city-state and 'kratos' meaning POWER or rule. ... A BELIEF in shared power: based on a suspicion of concentrated power (WHETHER by individuals, groups or governments).

1441.

a motorcyclist drives from Delhi to Gore gram covering a distance of 63 kilometre in 1 hour 45 minutes calculate his average speed

Answer»

Explanation:

The word 'democracy' has its ORIGINS in the Greek language. It combines two shorter words: 'demos' meaning whole citizen living within a particular city-state and 'kratos' meaning POWER or rule. ... A BELIEF in shared power: based on a suspicion of concentrated power (WHETHER by individuals, groups or governments).

Discussion

1442.	An athlete completes one round of a circular track of diameter 200 m in 40 s. What willbe the distance covered and the displacement at the end of 3 minute
Answer» Answer: 200m Explanation: The diameter of the circular track is given as 200 m. That is, 2r=200 m. From this radius is calculated as Radius, r = 100 m. In 40 sec the ATHLETE complete one round. So, in 2 mins and 20 SECS, that is, 140 sec the athlete will complete = 140 / 40 = 3.5 (three and a half) ROUNDS. One round is considered as the circumference of the circular track. The distance covered in 140 sec = 2πr×3.5=2×3.14×100×3.5=2200 m. For each complete round the displacement is zero. Therefore for 3 complete rounds, the displacement will be zero. At the end of his motion, the athlete will be in the diametrically OPPOSITE position. That is, displacement = diameter = 200 m. Hence, the distance covered is 2200 m and the displacement is 200 m.

1442.

An athlete completes one round of a circular track of diameter 200 m in 40 s. What willbe the distance covered and the displacement at the end of 3 minute

Answer»

Answer:

200m

Explanation:

The diameter of the circular track is given as 200 m. That is, 2r=200 m.

From this radius is calculated as Radius, r = 100 m.

In 40 sec the ATHLETE complete one round. So, in 2 mins and 20 SECS, that is, 140 sec the athlete will complete = 140 / 40 = 3.5 (three and a half) ROUNDS.

One round is considered as the circumference of the circular track.

The distance covered in 140 sec = 2πr×3.5=2×3.14×100×3.5=2200 m.

For each complete round the displacement is zero. Therefore for 3 complete rounds, the displacement will be zero.

At the end of his motion, the athlete will be in the diametrically OPPOSITE position. That is, displacement = diameter = 200 m.

Hence, the distance covered is 2200 m and the displacement is 200 m.

Discussion

1443.	Name at least two units in which the volume of liquid is measured
Answer» EXPLANATION: VOLUME is MEASURED in LITRES and mililiters.

1443.

Name at least two units in which the volume of liquid is measured

Answer»

EXPLANATION:

VOLUME is MEASURED in LITRES and mililiters.

Discussion

1444.	why do most cooking pots have a wooden handle or why it is necessary to put on protective gloves/towel to pick up a hot pot. In your response, discuss the type of heat transfer that is occuring.
Answer» Answer: Most of the Cooking pots use wooden handles as WOOD is a BAD conductor of heat. We should wear protective gloves to pick up a hot PAN so that our hand doesn't burn. The heat transfer OCCURING here is conduction.

1444.

why do most cooking pots have a wooden handle or why it is necessary to put on protective gloves/towel to pick up a hot pot. In your response, discuss the type of heat transfer that is occuring.

Answer»

Answer:

Most of the Cooking pots use wooden handles as WOOD is a BAD conductor of heat. We should wear protective gloves to pick up a hot PAN so that our hand doesn't burn. The heat transfer OCCURING here is conduction.

Discussion

1445.	Q1. A man jogs at a uniform speed of 12 Km/h. How much distance will he cover in 25 min ?Q2. If a girl runs around a circular track of length 400m and comes back to the initial point in 40s, what would be her speed ?
Answer» Explanation: 1. d=12×25/60=5km 2. speed=400/40=40m/s

1445.

Q1. A man jogs at a uniform speed of 12 Km/h. How much distance will he cover in 25 min ?Q2. If a girl runs around a circular track of length 400m and comes back to the initial point in 40s, what would be her speed ?

Answer»

Explanation:

1.

d=12×25/60=5km

2.

speed=400/40=40m/s

Discussion

1446.	Q II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.
Answer» Answer: 1)Straw : When a man SUCKS up the FLUID from straw the pressure inside is moderately low and accordingly atmospheric pressure outside POWERS up the fluid into straw. 2)Vacuum CLEANER : When a vacuum cleaner is exchanged on, the pressure inside tumble off because of air inside please follow

1446.

Q II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.

Answer»

Answer:

1)Straw : When a man SUCKS up the FLUID from straw the pressure inside is moderately low and accordingly atmospheric pressure outside POWERS up the fluid into straw. 2)Vacuum CLEANER : When a vacuum cleaner is exchanged on, the pressure inside tumble off because of air inside

please follow

Discussion

1447.	electrolysis of water was first shown by rutherford. it's true or false if false what is right statement
Answer» Answer: Botany, ALSO called PLANT science, plant biology or phytology, is the science of plant LIFE and a branch of biology. A botanist, plant SCIENTIST or phytologist is a scientist who specialises in this FIELD.

1447.

electrolysis of water was first shown by rutherford. it's true or false if false what is right statement

Answer»

Answer:

Botany, ALSO called PLANT science, plant biology or phytology, is the science of plant LIFE and a branch of biology. A botanist, plant SCIENTIST or phytologist is a scientist who specialises in this FIELD.

Discussion

1448.	QI. Answer in one word: -3. Give one application of low pressure.
Answer» Answer: HOPE it will HELP you. If you liked PLEASE MARK me brainliest

1448.

QI. Answer in one word: -3. Give one application of low pressure.

Answer»

Answer:

HOPE it will HELP you. If you liked PLEASE MARK me brainliest

Discussion

1449.	QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.
Answer» PRESSURE is per unit thrust on a surface, HENCE pressure is directly PROPORTIONAL to thrust. HOPE HELPS YOU FRIEND ADD ME AS YOUR FRIEND MARK ME AS BRAINLIST FRIEND

1449.

QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.

Answer»

PRESSURE is per unit thrust on a surface, HENCE pressure is directly PROPORTIONAL to thrust.

HOPE HELPS YOU FRIEND ADD ME AS YOUR FRIEND

MARK ME AS BRAINLIST FRIEND

Discussion

1450.	QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.2. What happens to atmospheric pressure as we move towards the higher altitude?3. Give one application of low pressure.4. The pressure exerted by a given liquid increases withQ II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.6. Why Potters place a round piece of cloth on their heads when they carry heavy loads?7. An elephant is standing on its four feet, exerting a force of 20000 Newton. The of four legs is 0.5-meter square. Calculate the pressure exerted by it on the surface.
Answer» *Pls* *Mark* *this* *Answer* as *Brainliest* *pls* *pls* 1)Both Thrust and Pressure are directly proportional to each other and derived the formula pressure is obtain by perpendicular force and area. They are practically same and thrust is defined as force acting perpendicular each other and divided by the unit area while pressure is applying by force. 2)pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.So, as we go up at higher altitude the pressure decreases. 3)A vacuum cleaner has a fan INSIDE that creates a low pressure inside the device. Consequently, air and dirt particles are sucked into the device. 4)The pressure exerted by a liquid increases with increasing depth inside the liquid. The pressure exerted by a liquid is small just under the surface of the liquid. 5)That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. ... One atmosphere is 1,013 MILLIBARS, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure DROPS as altitude increases Straw : When a man sucks up the fluid from straw the pressure inside is moderately low and ACCORDINGLY atmospheric pressure outside powers up the fluid into straw. 6)Porters place a THICK , round piece of cloth on their head when carry they have loads to increase the area of contact of the load with their head. Since the load now falls on a larger area of head, the pressure on head is reduced and it becomes easier to carry the heavy load. 7)force extered = 20,000 N Area = 0.5 meters square hence, force extered = F/A = (20,000/0.5) = PA = 40000 pa

1450.

QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.2. What happens to atmospheric pressure as we move towards the higher altitude?3. Give one application of low pressure.4. The pressure exerted by a given liquid increases withQ II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.6. Why Potters place a round piece of cloth on their heads when they carry heavy loads?7. An elephant is standing on its four feet, exerting a force of 20000 Newton. The of four legs is 0.5-meter square. Calculate the pressure exerted by it on the surface.

Answer»

Pls Mark this Answer as Brainliest pls pls

1)Both Thrust and Pressure are directly proportional to each other and derived the formula pressure is obtain by perpendicular force and area. They are practically same and thrust is defined as force acting perpendicular each other and divided by the unit area while pressure is applying by force.

2)pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.So, as we go up at higher altitude the pressure decreases.

3)A vacuum cleaner has a fan INSIDE that creates a low pressure inside the device. Consequently, air and dirt particles are sucked into the device.

4)The pressure exerted by a liquid increases with increasing depth inside the liquid. The pressure exerted by a liquid is small just under the surface of the liquid.

5)That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. ... One atmosphere is 1,013 MILLIBARS, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure DROPS as altitude increases

Straw : When a man sucks up the fluid from straw the pressure inside is moderately low and ACCORDINGLY atmospheric pressure outside powers up the fluid into straw.

6)Porters place a THICK , round piece of cloth on their head when carry they have loads to increase the area of contact of the load with their head. Since the load now falls on a larger area of head, the pressure on head is reduced and it becomes easier to carry the heavy load.

7)force extered = 20,000 N

Area = 0.5 meters square

hence, force extered = F/A = (20,000/0.5) = PA = 40000 pa

Discussion

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Convert the following 25 mm in to dm. step by step​

Question :

Given :

To Convert :

CONVERSION Used :

SOLUTION :

Answer :

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Convert the following 25 mm in to dm​

The values of current I flowing in a given resistor for the corresponding values ofpotential difference V across the resistor are given below – (2V 0.8 1.6 2.4 3.2 4.0I 0.2 0.4 0.6 0.8 1.0Plot V – I graph and calculate the resistance of that resistor

Abdul,while driving to school,computes the average speed for his trip to be 20km/h.On his return trip along the same route,there is less traffic and the average speed is 30km/h.What is the average speed for Abdul's trip? Pls do calculation as well and pls answer past ​

What number must be subtracted fromeach term of the ratio 5 : 7 so that the ratiobecomes 2 : 3 ?koi baat ni thik hojaiga sabh syd koi misunderstanding ho..!​

two brass balls of masses 2kg and 5kg experiments a force of attraction of 10N when the distance between their centers is doubled. The force of attraction​

what is physics?I don't dream. hehe I'll pray ur dreams come trueand u have a successful life ​

a motorcyclist drives from Delhi to Gore gram covering a distance of 63 kilometre in 1 hour 45 minutes calculate his average speed​

An athlete completes one round of a circular track of diameter 200 m in 40 s. What willbe the distance covered and the displacement at the end of 3 minute​

Name at least two units in which the volume of liquid is measured

why do most cooking pots have a wooden handle or why it is necessary to put on protective gloves/towel to pick up a hot pot. In your response, discuss the type of heat transfer that is occuring.

Q1. A man jogs at a uniform speed of 12 Km/h. How much distance will he cover in 25 min ?Q2. If a girl runs around a circular track of length 400m and comes back to the initial point in 40s, what would be her speed ?​

Q II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.​

1)Straw : When a man SUCKS up the FLUID from straw the pressure inside is moderately low and accordingly atmospheric pressure outside POWERS up the fluid into straw. 2)Vacuum CLEANER : When a vacuum cleaner is exchanged on, the pressure inside tumble off because of air inside

electrolysis of water was first shown by rutherford. it's true or false if false what is right statement​

QI. Answer in one word: -3. Give one application of low pressure.​

QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.​

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Define motion. Define motion solly.

What is the evidence that the Earth behaves as a magnet ?

Why do some fibres are called synthetic? Explain.

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a man running around a circular track of radius 20 m covers one complete round in 40 s . calculate the distance and displacement covered by him in 3 minutes

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What is oscillation of the pendulum?

5. Find the rise in temperature of 1Kg water it 1Kcal heat is supplied to it. The specific heat of water = 1 cal/g°Cif anyone know this please help me

An electric fan convertschemical energy mechanical energy light energy mechanical energy into electrical

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write down the precautions that should be kept in mind while using clinical thermometer and laboratory thermometer

A vehicle is moving with a velocity of 9.8 m/s, whose mass is 200 kg. What is the magnitude of force required to stop the vehicle in 10 sec?

How is a Zinc written in a symbolic form.

A car moves along a circular track of radius 14m. It completes 1 revolution in 20seconds. Calculate the distance the car covers if it travels for duration of 90 seconds. (a) 300 m(b) 400 m(c) 308 m(d) 396 m

Expanded universal science class 8

Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.

What are the different units to measure speed? when is each unit used

A girl starts from position A follows asemi circular path and reachesthe other end B. Find the displacement &distance

5. The shape and size of a body on which action takes place can also be changed due toA. velocityC. forceB. momentumD. weight

Convert the following 25 mm in to dm. step by step

Convert the following 25 mm in to dm

Abdul,while driving to school,computes the average speed for his trip to be 20km/h.On his return trip along the same route,there is less traffic and the average speed is 30km/h.What is the average speed for Abdul's trip? Pls do calculation as well and pls answer past

What number must be subtracted fromeach term of the ratio 5 : 7 so that the ratiobecomes 2 : 3 ?koi baat ni thik hojaiga sabh syd koi misunderstanding ho..!

two brass balls of masses 2kg and 5kg experiments a force of attraction of 10N when the distance between their centers is doubled. The force of attraction

what is physics?I don't dream. hehe I'll pray ur dreams come trueand u have a successful life

a motorcyclist drives from Delhi to Gore gram covering a distance of 63 kilometre in 1 hour 45 minutes calculate his average speed

An athlete completes one round of a circular track of diameter 200 m in 40 s. What willbe the distance covered and the displacement at the end of 3 minute

Q1. A man jogs at a uniform speed of 12 Km/h. How much distance will he cover in 25 min ?Q2. If a girl runs around a circular track of length 400m and comes back to the initial point in 40s, what would be her speed ?

Q II. Answer in brief: -5. Define atmospheric pressure. Give one application of atmosphere Pressure.

electrolysis of water was first shown by rutherford. it's true or false if false what is right statement

QI. Answer in one word: -3. Give one application of low pressure.

QI. Answer in one word: -1. Write the relationship between thrust, area and Pressure.