67486 + Interview Questions in Secondary School in Physics

1.	The S.l. unit of solid angle is
Answer» RONG>steradian Explanation: is the answer hope it HELPS you

1.

The S.l. unit of solid angle is

Answer» RONG>steradian

Explanation:

is the answer

hope it HELPS you

Discussion

2.	Page 1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method
Answer» ong>Answer: ★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★ ˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

2.

Page 1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method

Answer»

ong>Answer:

★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★

˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

Discussion

3.	derive an expression for the energy stored in a capacitor with Air as the medium between its plates.how does the stored energy change if Air is replaced by a medium of dielectric constant k
Answer» ong>Answer: Explanation: energy stored in the capacitor, change. Given, a parallel plate capacitor with air as dielectric is CHARGED by d.c source. Later on, WITHOUT disconnecting the source, air is replaced by another dielectric medium K. (i) Potential difference will remain CONSTANT as the capacitor remains connected to the battery.

3.

derive an expression for the energy stored in a capacitor with Air as the medium between its plates.how does the stored energy change if Air is replaced by a medium of dielectric constant k

Answer»

ong>Answer:

Explanation:

energy stored in the capacitor, change. Given, a parallel plate capacitor with air as dielectric is CHARGED by d.c source. Later on, WITHOUT disconnecting the source, air is replaced by another dielectric medium K. (i) Potential difference will remain CONSTANT as the capacitor remains connected to the battery.

Discussion

4.	Justine is ice-skating at the Lloyd Center. What is her final velocity if she accelerates at a rate of 2.0 m/s^2 for 3.5 seconds?
Answer» ong>Answer: 7m/s (assuming U = 0) Explanation: v = ? u = 0 t = 3.5 a a = 2m/s^2 v = u + at (FIRST EQUATION) v = 0 + 2 x 3.5 v = 7 hopefully it helped

4.

Justine is ice-skating at the Lloyd Center. What is her final velocity if she accelerates at a rate of 2.0 m/s^2 for 3.5 seconds?

Answer»

ong>Answer:

7m/s (assuming U = 0)

Explanation:

v = ?

u = 0

t = 3.5 a

a = 2m/s^2

v = u + at (FIRST EQUATION)

v = 0 + 2 x 3.5

v = 7

hopefully it helped

Discussion

5.	If the proteins weight 12 kilogram , what will be the person's weight
Answer» ong>Answer: It's important that we eat enough protein each day to cover our body's needs. Protein helps your body to maintain a proper fluid BALANCE, BUILDS and REPAIRS tissues, TRANSPORTS nutrients, and provides other essential functions.

5.

If the proteins weight 12 kilogram , what will be the person's weight

Answer»

ong>Answer:

It's important that we eat enough protein each day to cover our body's needs. Protein helps your body to maintain a proper fluid BALANCE, BUILDS and REPAIRS tissues, TRANSPORTS nutrients, and provides other essential functions.

Discussion

6.	Conduct an impact study on hi
Answer» ong>ANSWER: CONDUCT an IMPACT STUDY on hi But why??

6.

Conduct an impact study on hi

Answer»

ong>ANSWER:

CONDUCT an IMPACT STUDY on hi

But why??

Discussion

7.	Winch have the negative temperature coefficient
Answer» ong>ANSWER: A negative coefficient for a material means that its resistance DECREASES with an increase in temperature. SEMICONDUCTOR materials (carbon, silicon, germanium) typically have negative temperature coefficients of resistance.

7.

Winch have the negative temperature coefficient

Answer»

ong>ANSWER:

A negative coefficient for a material means that its resistance DECREASES with an increase in temperature. SEMICONDUCTOR materials (carbon, silicon, germanium) typically have negative temperature coefficients of resistance.

Discussion

8.	Value of universal gravitational constant is _________
Answer» ong>Answer: The answer is 6.67x10-11 Nm²/Kg² You may GET confused it is SIX POINT six seven into ten to the power minus 11 Newton meter square per KG square.

8.

Value of universal gravitational constant is _________

Answer»

ong>Answer:

The answer is 6.67x10-11 Nm²/Kg²

You may GET confused it is SIX POINT six seven into ten to the power minus 11 Newton meter square per KG square.

Discussion

9.	A driver a carcanin 50.of travelling at 52 km/h applies the brakesand accelerates uniformlyin the opposite. The stopsAnother driver goingat 3km/h in another can applieshis brakes slowly and stops ingraph paper,plot the speed versus time graphs for the 2 cars. Which ofthe two cars travelled farther after the brakes were applied?los. On the same
Answer» ong>Answer: "graphs" (and any subsequent words) was ignored because we limit queries to 32 words. Image result for A driver a car can in 50. of TRAVELLING at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in GRAPH paper, plot the speed versus time graphs for the 2 cars. Which of the two cars TRAVELLED further after the brakes were applied? los. On the same Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same View all A driver of a car travelling at 52 km h–1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h–1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars.

9.

A driver a carcanin 50.of travelling at 52 km/h applies the brakesand accelerates uniformlyin the opposite. The stopsAnother driver goingat 3km/h in another can applieshis brakes slowly and stops ingraph paper,plot the speed versus time graphs for the 2 cars. Which ofthe two cars travelled farther after the brakes were applied?los. On the same

Answer»

ong>Answer:

"graphs" (and any subsequent words) was ignored because we limit queries to 32 words.

Image result for A driver a car can in 50. of TRAVELLING at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in GRAPH paper, plot the speed versus time graphs for the 2 cars. Which of the two cars TRAVELLED further after the brakes were applied? los. On the same

Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same

View all

A driver of a car travelling at 52 km h–1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h–1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars.

Discussion

10.	Derive s=ut+1/2at 2
Answer» RONG> ⇒To prove s=ut + 1/2at² FIRST we have to prove v = u +at Derivation ⇒ For one DIMENSIONAL MOTION with a = constant We can write as dv = a dt Integrating both sides , we have $\rm \implies \int dv = a \int dt$ At t = 0 , velocity is u and at t = t velocity is v . HENCE $\rm\implies\int\limits^v_u {} \, dv=a\int\limits^t_0 {} \, dt$ $\rm\implies [v]^v_u= a[t]^t_o$ $\implies\rm v-u=at$ $\boxed{\rm v=u +at}$ we can write as ds = v dt = (u +at)dt At time t=0 suppose s = 0 and at t = t , displacement is s , the $\rm \implies \int\limits^s_0 {} \, ds=\int\limits^t_0 {} \,(u + at) dt$ $\rm\implies [s]^s_0=\bigg[ut +\dfrac{1}{2} at^{2} \bigg]^t_0$ $\boxed{\rm s= ut+\dfrac{1}{2} at^{2} }$ Hence proved

10.

Derive s=ut+1/2at 2

Answer» RONG>

⇒To prove s=ut + 1/2at² FIRST we have to prove v = u +at

Derivation

⇒ For one DIMENSIONAL MOTION with a = constant

We can write as dv = a dt

Integrating both sides , we have

$\rm \implies \int dv = a \int dt$

At t = 0 , velocity is u and at t = t velocity is v . HENCE

$\rm\implies\int\limits^v_u {} \, dv=a\int\limits^t_0 {} \, dt$

$\rm\implies [v]^v_u= a[t]^t_o$

$\implies\rm v-u=at$

$\boxed{\rm v=u +at}$

we can write as ds = v dt

= (u +at)dt

At time t=0 suppose s = 0 and at t = t , displacement is s , the

$\rm \implies \int\limits^s_0 {} \, ds=\int\limits^t_0 {} \,(u + at) dt$

$\rm\implies [s]^s_0=\bigg[ut +\dfrac{1}{2} at^{2} \bigg]^t_0$

$\boxed{\rm s= ut+\dfrac{1}{2} at^{2} }$

Hence proved

Discussion

11.	Hey, guys! please answer my previous physics question.
Answer» ong>Answer: OK I will try to give answers for you Answer:Temples in administrative towns were full of MARKET selling grains, spices, cloth and jewellery. These towns had some SORT of fortification WALL with one or more gates. Temples in pilgrimage towns are religious places where PEOPLE go for pilgrimage during festivals may people VISITED this temples

11.

Hey, guys! please answer my previous physics question.

Answer»

ong>Answer:

OK

I will try to give answers for you

Answer:Temples in administrative towns were full of MARKET selling grains, spices, cloth and jewellery. These towns had some SORT of fortification WALL with one or more gates. Temples in pilgrimage towns are religious places where PEOPLE go for pilgrimage during festivals may people VISITED this temples

Discussion

12.	Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes. a)40 kmb)8 kmc)4 kmd)2×root 7
Answer» ONG>ANSWER: option C...... but I am not SURE

12.

Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes. a)40 kmb)8 kmc)4 kmd)2×root 7

Answer» ONG>ANSWER:

option C...... but I am not SURE

Discussion

13.	1 (3i+4j-5kV50If Ã = B - C, then determine the angle betweenand B.Hint :Č= B - Å, č. Č= (B - Ả• (B - ÅA? + B2 - 02Ans. 0 = cos2 AB-1If Ã = 3î + 2ị and B =î -2į + 3 k, then find thmagnitudes of A + B and A - B. Ans. 5, 129Thesum andand difference of two
Answer» ONG>EXPLANATION: dunnno ..............

Discussion

14.	A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he has to walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m
Answer» ong>Explanation: 110 m, 50 m ANSWER Distance =50+40+20=110m Displacement OC= 40 2 +30 2 =50m and the direction is along OC. solution

14.

A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he has to walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m

Answer»

ong>Explanation:

110 m, 50 m

ANSWER

Distance =50+40+20=110m

Displacement OC=

40

2

+30

2

=50m and the direction is along OC.

solution

Discussion

15.	Anyone do it please
Answer» ong>ANSWER: I m&s per sec straight LINE graph 30 ???

15.

Anyone do it please

Answer»

ong>ANSWER:

I m&s per sec
straight LINE graph
30
???

Discussion

16.	1 1) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor
Answer» ONG>Answer: ★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★ ˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

16.

1 1) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor

Answer» ONG>Answer:

★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★

˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

Discussion

17.	a car moving with the initial velocity 15m/s can he stopped after 5 seconds by applying of breaks .find the retardation
Answer» ONG>ANSWER: 3 m/s SQURE....is your answer....

Discussion

18.	When gold is heated it's density _________.a) increases b) decreasesc) no changed) none
Answer» ONG>ANSWER: B) DECREASES........

Discussion

19.	G=gm/r square g=gm/r square
Answer» ...............

Discussion

20.	What is the value of inductance for which current is maximum in series LCR circuit with C=10 microfarad & w=100s-1.
Answer» happy New YEAR ❣️❣️❣️ Explanation: hello my NAME is CHINMAYA Me you happy

20.

What is the value of inductance for which current is maximum in series LCR circuit with C=10 microfarad & w=100s-1.

Answer»

happy New YEAR ❣️❣️❣️

Explanation:

hello my NAME is CHINMAYA Me you happy

Discussion

21.	A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation. (With step by step) I'll mark as brainliest
Answer» ONG>Answer: don't KNOW bro sorry for that okk

Discussion

22.	if the length of 2 cm is the front of the middle of the needle felted which of the following is correct
Answer» ONG>ANSWER: SEXY BLONDE babe Explanation: ctctxtxxtxtxtxtxtxtxrxrxrxrzzrzrzrzrzrzrsrsrdrdrdrxrzrxr

22.

if the length of 2 cm is the front of the middle of the needle felted which of the following is correct

Answer» ONG>ANSWER:

SEXY BLONDE babe

Explanation:

ctctxtxxtxtxtxtxtxtxrxrxrxrzzrzrzrzrzrzrsrsrdrdrdrxrzrxr

Discussion

23.	In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2 Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:
Answer» ong>ANSWER: CHECK on GOOGLE,may be there

23.

In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2 Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:

Answer»

ong>ANSWER:

CHECK on GOOGLE,may be there

Discussion

24.	Consider three charges are placed apart with some distance what will be the net force experienced in q1 due to q2, q3?
Answer» ong>Answer: net FORCE will be the SUM of all the three forces ACTING on it and the property is calls as superimpostion

24.

Consider three charges are placed apart with some distance what will be the net force experienced in q1 due to q2, q3?

Answer»

ong>Answer:

net FORCE will be the SUM of all the three forces ACTING on it and the property is calls as superimpostion

Discussion

25.	1. 1 point ताप बड़ने पर परवैधुतांक K का मान बढ़ता है घटता है परिवर्तित रहता है अनियमित रूप से बदलता है1. 1 point ताप बड़ने पर परवैधुतांक K का मान बढ़ता है घटता है परिवर्तित रहता है अनियमित रूप से बदलता है
Answer» ONG>ANSWER: EXPLANATION:विद्युत क्षेत्र लगाने पर परावैद्युत पदार्थ का ध्रुवण (पोलराइजेशन) ... किसी पदार्थ के ध्रुवण की मात्रा को उसके परावैद्युत स्थिरांक (DIELECTRIC CONSTANT) या ... परावैद्युत पदार्थों का एक प्रमुख उपयोग संधारित्र की प्लेटों के बीच में किया जाता है ताकि समान आकार में ... पुस्तक बनायें · पीडीएफ़ रूप डाउनलोड करें · प्रिन्ट करने लायक ... अन्तिम परिवर्तन

25.

1. 1 point ताप बड़ने पर परवैधुतांक K का मान बढ़ता है घटता है परिवर्तित रहता है अनियमित रूप से बदलता है1. 1 point ताप बड़ने पर परवैधुतांक K का मान बढ़ता है घटता है परिवर्तित रहता है अनियमित रूप से बदलता है

Answer» ONG>ANSWER:

EXPLANATION:विद्युत क्षेत्र लगाने पर परावैद्युत पदार्थ का ध्रुवण (पोलराइजेशन) ... किसी पदार्थ के ध्रुवण की मात्रा को उसके परावैद्युत स्थिरांक (DIELECTRIC CONSTANT) या ... परावैद्युत पदार्थों का एक प्रमुख उपयोग संधारित्र की प्लेटों के बीच में किया जाता है ताकि समान आकार में ... पुस्तक बनायें · पीडीएफ़ रूप डाउनलोड करें · प्रिन्ट करने लायक ... अन्तिम परिवर्तन

Discussion

26.	Iii) 300 mmol of perfect gas occupies 13 dm3 at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)
Answer» is your ANSWER HOPE it HELPS :::::):(:)

26.

Iii) 300 mmol of perfect gas occupies 13 dm3 at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)

Answer»

is your ANSWER

HOPE it HELPS :::::):(:)

Discussion

27.	1point 2. what is the aim ofplanning in sports? खेलों मेंयोजना बनाने का उद्देश्य क्या है ?OTo entertain मनोरंजन के लिएTo make coordination betweenOplayers खिलाड़ियों के बीच समन्वयबनाने के लिएO OTo complete the tournamentकरने के लिएटूर्नामेंट पूराPyMONTo make tournamentsuccessful टूर्नामेंट को सफल बनानेके लिए
Answer» ong>Answer: To make co- ordination between PLAYER and to win the match Explanation: The reason why I GAVE this answer is that always in sports planning is very important because if you dont have planning the players will play as they want and because of which if there is a captain in a team he will be useless so planning is always important in anything not only ln sports but in everything *THANK* *YOU* *HAVE* A *GOOD* *DAY*

27.

1point 2. what is the aim ofplanning in sports? खेलों मेंयोजना बनाने का उद्देश्य क्या है ?OTo entertain मनोरंजन के लिएTo make coordination betweenOplayers खिलाड़ियों के बीच समन्वयबनाने के लिएO OTo complete the tournamentकरने के लिएटूर्नामेंट पूराPyMONTo make tournamentsuccessful टूर्नामेंट को सफल बनानेके लिए

Answer»

ong>Answer:

To make co- ordination between PLAYER and to win the match

Explanation:

The reason why I GAVE this answer is that always in sports planning is very important because if you dont have planning the players will play as they want and because of which if there is a captain in a team he will be useless so planning is always important in anything not only ln sports but in everything

THANK YOU

HAVE A GOOD DAY

Discussion

28.	A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation. (With step by step) I'll mark as brainliest
Answer» ONG>AnswEr : ⠀⠀⠀⠀⠀ ⠀⠀⠀ $\bullet$ ⠀Frequency [v] = 980 kHz ⠀⠀⠀⠀⠀ $\implies\sf <klux>980</klux> \times 10^{3} Hz$ ⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀Using Formula : ⠀⠀⠀⠀ $\star\: \: \boxed{\frak{ v = \dfrac{c}{\lambda}}}$ $\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}$ ⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━ ⠀⠀⠀⠀⠀Now FINDING WAVELENGTH : ⠀⠀⠀⠀ $\implies\sf v = \dfrac{ 3 \times 10^{8} ms^{-1}}{980 \times 10^{3}} \\\\\\\implies\sf \dfrac{3}{98} \times 10^{4} \\\\\\\implies\boxed{\frak{\purple{306 \ m}}}$ HENCE, wavelength of the electromagnetic radiation is 306 m.

28.

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation. (With step by step) I'll mark as brainliest

Answer» ONG>AnswEr :

⠀⠀⠀⠀⠀

⠀⠀⠀ $\bullet$ ⠀Frequency [v] = 980 kHz

⠀⠀⠀⠀⠀

$\implies\sf <klux>980</klux> \times 10^{3} Hz$

⠀⠀⠀⠀

⠀⠀⠀⠀⠀⠀⠀⠀Using Formula :

⠀⠀⠀⠀

$\star\: \: \boxed{\frak{ v = \dfrac{c}{\lambda}}}$

$\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}$

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━

⠀⠀⠀⠀⠀Now FINDING WAVELENGTH : ⠀⠀⠀⠀

$\implies\sf v = \dfrac{ 3 \times 10^{8} ms^{-1}}{980 \times 10^{3}} \\\\\\\implies\sf \dfrac{3}{98} \times 10^{4} \\\\\\\implies\boxed{\frak{\purple{306 \ m}}}$

HENCE, wavelength of the electromagnetic radiation is 306 m.

Discussion

29.	Deduse the dimensional formule of the following physical quantities . 1.specific heat 2. mechanical equivalent of heat 3.cofficient of viscosity 4.time period5.Relative density 6.Angular speed 7.a pure number
Answer» ONG>ANSWER: That's all.All the BEST.

Discussion

30.	3) Match the following. [1] Copper + Hydrogen-- Copper Oxide a) Reduction2) Copper Oxide + hydrogen -- copper +water b) oxidation 3 lead Oride + Carbon--- lead + carbon c)Redox Reactiona)1-b.2-a.3-cb)1-a. 2-b.3-cc)1-c.2_b.3-ad)1-c.2-a.3-b
Answer» ong>Answer: a) EXPLANATION: Reduction: Is known as LOSING oxygen. Oxidation: Is known as losing Hydrogen. Redox REACTION : one REACTANT under goes oxidation and another under goes Reduction reaction.

30.

3) Match the following. [1] Copper + Hydrogen-- Copper Oxide a) Reduction2) Copper Oxide + hydrogen -- copper +water b) oxidation 3 lead Oride + Carbon--- lead + carbon c)Redox Reactiona)1-b.2-a.3-cb)1-a. 2-b.3-cc)1-c.2_b.3-ad)1-c.2-a.3-b

Answer»

ong>Answer:

a)

EXPLANATION:

Reduction: Is known as LOSING oxygen.

Oxidation: Is known as losing Hydrogen.

Redox REACTION : one REACTANT under goes oxidation and another under goes Reduction reaction.

Discussion

31.	Please please please answer.
Answer» ONG>ANSWER: ehjfccjjdcbngfvmgf nngvv

Discussion

32.	State and explain, with examples, how friction can help the cause of friction can help the causes of motion in certain situations.
Answer» ong>Answer: have a GOOD day. Explanation: We can walk on the road and FLOOR DUE to friction. Also, the vehicles run on the road due to friction between their tyres and road. We slip and the vehicles skid in ABSENCE of friction. Thus, friction can cause the motion in these situations..

32.

State and explain, with examples, how friction can help the cause of friction can help the causes of motion in certain situations.

Answer»

ong>Answer:

have a GOOD day.

Explanation:

We can walk on the road and FLOOR DUE to friction. Also, the vehicles run on the road due to friction between their tyres and road. We slip and the vehicles skid in ABSENCE of friction. Thus, friction can cause the motion in these situations..

Discussion

33.	1 sphere= ----------- degree derive it
Answer» ONG>Answer: 180' because it is HALF of the CIRCLE

Discussion

34.	W = F S cos ϴ, If Ѳ = 180° then W
Answer» ONG>Answer: W=-F.s hope it helps.... please MARK me as the BRAINLIEST ...

34.

W = F S cos ϴ, If Ѳ = 180° then W

Answer» ONG>Answer:

W=-F.s

hope it helps....

please MARK me as the BRAINLIEST ...

Discussion

35.	is there any opportunity for research related to time travel if we get admission in iit? if yes please explain in detail.only those who have an idea about this answer and please don't spam otherwise you would be reported
Answer» ong>Answer: Yes. Have a Right to answer ( being an IITian) time travel is a Concept in Physics and Higher topic in General Theory of REALITIVITY. Both Masters Einstein and Stephen Hawking , believed that a Reality may exists , thats unproven yet . THEORETICAL Physics is available in MSc and PHD LEVEL Course at Several Great Indian institutes but Also in US, UK and Germany. Look for opportunities By visiting Univ sites and check if research interests exist in those areas. Happy Time Travel with V 》》 C in the Meantime:)

35.

is there any opportunity for research related to time travel if we get admission in iit? if yes please explain in detail.only those who have an idea about this answer and please don't spam otherwise you would be reported

Answer»

ong>Answer:

Yes. Have a Right to answer ( being an IITian)

time travel is a Concept in Physics and Higher topic in General Theory of REALITIVITY. Both Masters Einstein and Stephen Hawking , believed that a Reality may exists , thats unproven yet .

THEORETICAL Physics is available in MSc and PHD LEVEL Course at Several Great Indian institutes but Also in US, UK and Germany.

Look for opportunities By visiting Univ sites and check if research interests exist in those areas.

Happy Time Travel with V 》》 C in the Meantime:)

Discussion

36.	State the facts affecting the acceleration due to gravity.
Answer» ONG>Answer: mass of the body different on different places, ie more on equator, less on POLES . different on different PLANETS

Discussion

37.	Find the cosine of the angle between the given vectors: P = 3î + 12ſ – 4k and 7 = 2î + 2ỉ + k. Ans. cos O = 2/3solution of this ??
Answer» ONG>ANSWER: my ANS is COS ∅ = 2/13.......

Discussion

38.	Convert 500 Mg in kilogram anwer with explanation.
Answer» ONG>ANSWER: 0.000500 Explanation: is the answer

38.

Convert 500 Mg in kilogram anwer with explanation.

Answer» ONG>ANSWER:

0.000500

Explanation:

is the answer

Discussion

39.	Prove that A = (4î – 6ị + 8k) and B = (2î + 4ſ + 2k) are mutually perpendicular. Calculate the work done
Answer» ONG>Answer: HI Explanation: PLEASE FOLLOW me l am new in there

39.

Prove that A = (4î – 6ị + 8k) and B = (2î + 4ſ + 2k) are mutually perpendicular. Calculate the work done

Answer» ONG>Answer:

HI

Explanation:

PLEASE FOLLOW me

l am new in there

Discussion

40.	A body of mass 10 kg is lying on a rough plane inclined at an angle of 30° to the horizontal and the coefficient of friction is 0.5. the minimum force required to pull the body up the plane is A. 914 N B. 91.4 N C. 9.14 N D. 0.914 N
Answer» ong>Answer: 91.4 N Explanation: FORCE needed = Friction (UsN) + mg sin theta = 25 ROOT 3 + 50 N approx 92 if u TAKE a DUE to g as 10m/s^2

40.

A body of mass 10 kg is lying on a rough plane inclined at an angle of 30° to the horizontal and the coefficient of friction is 0.5. the minimum force required to pull the body up the plane is A. 914 N B. 91.4 N C. 9.14 N D. 0.914 N

Answer»

ong>Answer:

91.4 N

Explanation:

FORCE needed = Friction (UsN) + mg sin theta

= 25 ROOT 3 + 50 N

approx 92 if u TAKE a DUE to g as 10m/s^2

Discussion

41.	When two forces act in the same direction , the resultant force is
Answer» ong>Answer: TWO forces that ACT in the same DIRECTION PRODUCE a resultant force that is larger than either individual force.

41.

When two forces act in the same direction , the resultant force is

Answer»

ong>Answer:

TWO forces that ACT in the same DIRECTION PRODUCE a resultant force that is larger than either individual force.

Discussion

42.	An electron of mass m and charge e initially at rest gets accelerated by a constant electric field E.The rate of change of de broglie wavelength of this electron is
Answer» ong>Answer: around 0.01 nanometers Since electrons have a rest mass, unlike PHOTONS, they have a DE Broglie wavelength which is really short, around 0.01 nanometers for easily achievable speeds. This means that a microscope using electron "matter waves" INSTEAD of PHOTON light waves can SEE much smaller things.

42.

An electron of mass m and charge e initially at rest gets accelerated by a constant electric field E.The rate of change of de broglie wavelength of this electron is

Answer»

ong>Answer:

around 0.01 nanometers

Since electrons have a rest mass, unlike PHOTONS, they have a DE Broglie wavelength which is really short, around 0.01 nanometers for easily achievable speeds. This means that a microscope using electron "matter waves" INSTEAD of PHOTON light waves can SEE much smaller things.

Discussion

43.	Write down the significant figure in 36.879 and 1.0084 and 11.115
Answer» ong>Answer: 1) 5 SIG fig 2) 5 sig fig 3) 5 sig fig

43.

Write down the significant figure in 36.879 and 1.0084 and 11.115

Answer»

ong>Answer:

1) 5 SIG fig

2) 5 sig fig

3) 5 sig fig

Discussion

44.	Show that if the dot product of two finite vectors is zero then they are mutually perpendicular to each other.
Answer» ong>ANSWER: hiiiii Explanation: L am new in there please follow me

44.

Show that if the dot product of two finite vectors is zero then they are mutually perpendicular to each other.

Answer»

ong>ANSWER:

hiiiii

Explanation:

L am new in there

please follow me

Discussion

45.	Discuss any two limitations of CFT
Answer» ONG>ANSWER: The LIMITATION of CFT is FOLLOWING

Discussion

46.	When two forces act in the same direction,the resultant force is
Answer» LANATION Two forces that ACT in the same direction PRODUCE a resultant force that is LARGER than EITHER individual force.

Discussion

47.	What is action and reaction? Give example.
Answer» action and reaction FORCES are reciprocal (OPPOSITE) on an object. Examples may include: A swimmer swimming forward: The swimmer pushes against the water (action FORCE), the water pushes back on the swimmer (reaction force) and pushes her forward. HopE this helps!!!!!!!

47.

What is action and reaction? Give example.

Answer»

action and reaction FORCES are reciprocal (OPPOSITE) on an object. Examples may include: A swimmer swimming forward: The swimmer pushes against the water (action FORCE), the water pushes back on the swimmer (reaction force) and pushes her forward.

HopE this helps!!!!!!!

Discussion

48.	Q.7 A wire of length Land 3 identical cells of negligible internal resistance are connected in series. Due to the current, the temperature of the wire is raised by AT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross section but of length 2L. The temperature of the wire is raised by the same amount AT in the time. The value of N is
Answer» ong>Answer: step by step Explanation: Here a wire of LENGTH L and three IDENTICAL cells of negligible internal resistances are connected in series. Let, the terminal potential difference of each cell is V and resistance of wire is R. then heat developed in the wire in time t is H=( R (3V) 2 )=msΔT where m is the mass of wire s is the specific heat of its MATERIAL and ΔT is rise in its temperature When N such identical cells are connected in series the effective terminal potential is NV volts and if the length of wire is DOUBLED its resistance and mass also doubled then heat developed in the wire is H=( 2R (NV) 2 )t=2msΔT dividing both equations we get 2×9 N 2 =2 ∴N=6 May be helpful for you Mark as brainlest pls....

48.

Q.7 A wire of length Land 3 identical cells of negligible internal resistance are connected in series. Due to the current, the temperature of the wire is raised by AT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross section but of length 2L. The temperature of the wire is raised by the same amount AT in the time. The value of N is

Answer»

ong>Answer:

step by step

Explanation:

Here a wire of LENGTH L and three IDENTICAL cells of negligible internal resistances are connected in series.

Let, the terminal potential difference of each cell is V and resistance of wire is R.

then heat developed in the wire in time t is

H=(

R

(3V)

2

)=msΔT

where m is the mass of wire

s is the specific heat of its MATERIAL and

ΔT is rise in its temperature

When N such identical cells are connected in series the effective terminal

potential is NV volts and if the length of wire is DOUBLED its resistance and

mass also doubled then heat developed in the wire is

H=(

2R

(NV)

2

)t=2msΔT

dividing both equations we get

2×9

N

2

=2

∴N=6

May be helpful for you

Mark as brainlest pls....

Discussion

49.	Dimensional formula for coefficient of superficial expansion
Answer» ONG>EXPLANATION: plz mark me as BRAINLIEST

Discussion

50.	The actual length covered. By the body is callad
Answer» ONG>Explanation: The distance TRAVELLED by a body is the ACTUAL length of the PATH covered by a moving body irrespective of the DIRECTION in which the body travels.

Discussion

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