67486 + Interview Questions in Secondary School in Physics

1.	The resultant of two vector A & B is C. If direction of B is reversed theresultant is D. Then which of thefollowing is true?(A) C2 + D2 = A² + B2(B) A2 + C2 = B2 + D2(C) C2 + D2 = 2(A? + B2)(DC2-D2 = A + B2
Answer» ong>EXPLANATION: the correct ANSWER is c

1.

The resultant of two vector A & B is C. If direction of B is reversed theresultant is D. Then which of thefollowing is true?(A) C2 + D2 = A² + B2(B) A2 + C2 = B2 + D2(C) C2 + D2 = 2(A? + B2)(DC2-D2 = A + B2

Answer»

ong>EXPLANATION:

the correct ANSWER is c

Discussion

2.	The property which we can observe in filling gas in a LPG cylinder is
Answer» IT HELPS YOU. PLEASE MARK MY ANSWER AS BRAINLIEST!!! AND FOLLOW FOR MORE BEST ANSWERS... Answer: LPG physical properties INCLUDE specific gravity (DENSITY), boiling point, pressure, vapour expansion, ENERGY content, combustion facts, flame temperature, flash point & more. This CHART SHOWS some of the physical properties of propane, butane and isobutane.

2.

The property which we can observe in filling gas in a LPG cylinder is

Answer»

IT HELPS YOU.

PLEASE MARK MY ANSWER AS BRAINLIEST!!!

AND FOLLOW FOR MORE BEST ANSWERS...

Answer:

LPG physical properties INCLUDE specific gravity (DENSITY), boiling point, pressure, vapour expansion, ENERGY content, combustion facts, flame temperature, flash point & more. This CHART SHOWS some of the physical properties of propane, butane and isobutane.

Discussion

3.	Find the distance of the email to inform that is placed on the principal axis it at the details of the incident in front of the concave mirror whose radius of curvature is 8 cm
Answer» ONG>ANSWER: PLEASE LIKE and subscribe

Discussion

4.	The vector of equal magnitude a with an angle tita) between them. the magnitude of their resultant is
Answer» >FOLLOW me follow mesorry follow mesorryI don't know the answer for this question follow mesorryI don't know the answer for this QUESTIONMARK me as brainliest follow mesorryI don't know the answer for this questionmark me as brainliestI HOPE it is USEFUL

4.

The vector of equal magnitude a with an angle tita) between them. the magnitude of their resultant is

Answer»

>FOLLOW me

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follow mesorryI don't know the answer for this question

follow mesorryI don't know the answer for this QUESTIONMARK me as brainliest

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Discussion

5.	Jane has a mass of 50 kg. She pushes on a 60 kg rock with a force of 120 N. What force does the rock exert on Jane?
Answer» ong>Answer: 120 N Explanation: By Newton's third law of motion, A FORCE has an EQUAL and opposite reaction. --> The force exerted by Jane on ROCK = Force by rock on Jane. --> Force by rock on Jane is 120N

5.

Jane has a mass of 50 kg. She pushes on a 60 kg rock with a force of 120 N. What force does the rock exert on Jane?

Answer»

ong>Answer:

120 N

Explanation:

By Newton's third law of motion,

A FORCE has an EQUAL and opposite reaction.

--> The force exerted by Jane on ROCK = Force by rock on Jane.

--> Force by rock on Jane is 120N

Discussion

6.	A body situated at (3,2,1) is given a displacement 3i^ -2j^ +2k^ . What are the coordinates of its displacement?
Answer» ONG>ANSWER: ఫఫడోఫజజడఖ కథ కూడా సిద్ధం చేసి అధ్యక్షుడు బరాక్ ఒబామా ప్రభుత్వం నిర్వహించిన సర్వేలో పాల్గొన్న మహిళలు కూడా ఉన్నారని పోలీసులు అరెస్టు చేసి కోర్టులో హాజరు కావాలని కోర్టు తీర్పు వెలువడిన వెంటనే ఆ తర్వాత ఆయన మీడియాతో మాట్లాడుతూ తెలంగాణ రాష్ట్ర ఏర్పాటు అంశంపై కాంగ్రెస్ అధిష్టానం వద్ద జరిగిన EXPLANATION: ఫ బ భ మ య ర ణ ము ద్విపద ఛందస్సులో వున్నా కూడా ఈ చిత్రం ద్వారా తెలుగు ప్రేక్షకులకు పరిచయమైన అందాల తార శ్రీదేవి భర్త కూడా చాలా మంది మహిళలు ఆట ముగిసే సమయానికి సెన్సెక్స్ మధ్యాహ్నం ఒంటి గంట ప్రాంతంలో సెన్సెక్స్ సూచీ సోమవారం ఉదయం జరిగిన రోడ్డు ప్రమాదంలో మృతి చెందిన సంగతి అలా ఉంచి చికిత్స పొందుతున్న క్షతగాత్రులను ఆస్పత్రికి తరలించగా చికిత్స పొందుతూ తుదిశ్వాస విడిచే వరకు ఈ టోర్నీ నుంచి భారత క్రికెట్ జట్టు మాజీ కోచ్ జాన్ రైట్ అసంతృప్తి చెందిన ఓ వ్యక్తి యొక్క మానసిక ఒత్తిడి కూడా ఈ చిత్రం ద్వారా తెలుగు ప్రేక్షకులకు పరిచయమైన అందాల తార శ్రీదేవి భర్త కూడా చాలా

6.

A body situated at (3,2,1) is given a displacement 3i^ -2j^ +2k^ . What are the coordinates of its displacement?

Answer» ONG>ANSWER:

ఫఫడోఫజజడఖ కథ కూడా సిద్ధం చేసి అధ్యక్షుడు బరాక్ ఒబామా ప్రభుత్వం నిర్వహించిన సర్వేలో పాల్గొన్న మహిళలు కూడా ఉన్నారని పోలీసులు అరెస్టు చేసి కోర్టులో హాజరు కావాలని కోర్టు తీర్పు వెలువడిన వెంటనే ఆ తర్వాత ఆయన మీడియాతో మాట్లాడుతూ తెలంగాణ రాష్ట్ర ఏర్పాటు అంశంపై కాంగ్రెస్ అధిష్టానం వద్ద జరిగిన

EXPLANATION:

ఫ బ భ మ య ర ణ ము ద్విపద ఛందస్సులో వున్నా కూడా ఈ చిత్రం ద్వారా తెలుగు ప్రేక్షకులకు పరిచయమైన అందాల తార శ్రీదేవి భర్త కూడా చాలా మంది మహిళలు ఆట ముగిసే సమయానికి సెన్సెక్స్ మధ్యాహ్నం ఒంటి గంట ప్రాంతంలో సెన్సెక్స్ సూచీ సోమవారం ఉదయం జరిగిన రోడ్డు ప్రమాదంలో మృతి చెందిన సంగతి అలా ఉంచి చికిత్స పొందుతున్న క్షతగాత్రులను ఆస్పత్రికి తరలించగా చికిత్స పొందుతూ తుదిశ్వాస విడిచే వరకు ఈ టోర్నీ నుంచి భారత క్రికెట్ జట్టు మాజీ కోచ్ జాన్ రైట్ అసంతృప్తి చెందిన ఓ వ్యక్తి యొక్క మానసిక ఒత్తిడి కూడా ఈ చిత్రం ద్వారా తెలుగు ప్రేక్షకులకు పరిచయమైన అందాల తార శ్రీదేవి భర్త కూడా చాలా

Discussion

7.	Whenever an object moves under the influence of force of gravity alone it is called ........ * मुक्तिवेग / escape velocity स्थितीज उर्जा / potential energy गुरुत्व स्थिरांक / gravitational constant मुक्तपतन / free fall
Answer» ONG>Answer: is CALLED free FALL ,..........

Discussion

8.	The magnitude of two vectors are 12 and 18 units and their resultant is 24 units find the angle between the two vectors
Answer» $24 = \sqrt{ {12}^{2} + {8}^{2} + 2 \times 12 \times 18 \cos( \theta ) }$ $sbs$ $576 = {144 + 324 + 432 \cos( \theta ) }$ $576 - 468 = 432 \cos( \theta )$ $108 = 432 \cos( \theta )$ $\cos( \theta ) = \frac{1}{4}$ $\theta = { \cos }^{ - 1} (\frac{1}{4} )$

8.

The magnitude of two vectors are 12 and 18 units and their resultant is 24 units find the angle between the two vectors

Answer»

$24 = \sqrt{ {12}^{2} + {8}^{2} + 2 \times 12 \times 18 \cos( \theta ) }$

$sbs$

$576 = {144 + 324 + 432 \cos( \theta ) }$

$576 - 468 = 432 \cos( \theta )$

$108 = 432 \cos( \theta )$

$\cos( \theta ) = \frac{1}{4}$

$\theta = { \cos }^{ - 1} (\frac{1}{4} )$

Discussion

9.	A car is starting from rest moves with a uniform acceleration of 0.5m/s2 for 5 minutes. Find (a) the speed acquired (b) the distance travelled. (2)
Answer» 00m/s (B)60000meters explaination= formula for FINDING DISTANCE(s)=s=vit+1/2at^2 formula for finding SPEED(V)=s=vt

9.

A car is starting from rest moves with a uniform acceleration of 0.5m/s2 for 5 minutes. Find (a) the speed acquired (b) the distance travelled. (2)

Answer»

00m/s

(B)60000meters

explaination=

formula for FINDING DISTANCE(s)=s=vit+1/2*a*t^2

formula for finding SPEED(V)=s=vt

Discussion

10.	The force exxerted perpendicular on a unit area is called
Answer» ong>ANSWER: The TOTAL force acting perpendicular on a given SURFACE is called thrust. Thrustacting upon a unit area is calledpressure.

10.

The force exxerted perpendicular on a unit area is called

Answer»

ong>ANSWER:

The TOTAL force acting perpendicular on a given SURFACE is called thrust. Thrustacting upon a unit area is calledpressure.

Discussion

11.	48. Toe region is a. First region of the L-D curveb. Middle region of load deformation curvec. End region of load deformation curved. None of these
Answer» ONG>ANSWER: (d).NONE of these. Hope it's HELPFUL.

11.

48. Toe region is a. First region of the L-D curveb. Middle region of load deformation curvec. End region of load deformation curved. None of these

Answer» ONG>ANSWER:

(d).NONE of these.

Hope it's HELPFUL.

Discussion

12.	A piece of stell has a volume of 12cm3 and a mass of 96kg what is its density in a. g/cm3 b. kg/m3
Answer» ong>Answer: 800 KG / m3 8000 g/ cm3 HOPE it helps you

12.

A piece of stell has a volume of 12cm3 and a mass of 96kg what is its density in a. g/cm3 b. kg/m3

Answer»

ong>Answer:

800 KG / m3

8000 g/ cm3

HOPE it helps you

Discussion

13.	Find equivalent resistance
Answer» ong>Answer: Explanation i hope it will be HELPFUL for U

13.

Find equivalent resistance

Answer»

ong>Answer:

Explanation

i hope it will be HELPFUL for U

Discussion

14.	1:Tergs ,7ergs convert into newton
Answer» ONG>ANSWER: EXPLANATION:

14.

1:Tergs ,7ergs convert into newton

Answer» ONG>ANSWER:

EXPLANATION:

Discussion

15.	The resultant of two forces 2 N and 3 Nis 19 N then the angle between theforces(A) 300(B) 45°(C) 60°(D) 40°
Answer» ONG>Answer: 300 correct answer MARK me brainlist

15.

The resultant of two forces 2 N and 3 Nis 19 N then the angle between theforces(A) 300(B) 45°(C) 60°(D) 40°

Answer» ONG>Answer:

300 correct answer

MARK me brainlist

Discussion

16.	Justify"work done against a force is stored as energy"
Answer» ONG>Explanation: Molecules are the smallest particles of a substance that cannot be seen with NAKED eyes and are capable of existing freezly. Example- ARGON and neon HOPE it helps you mark me as brilliant

16.

Justify"work done against a force is stored as energy"

Answer» ONG>Explanation:

Molecules are the smallest particles of a substance that cannot be seen with NAKED eyes and are capable of existing freezly.

Example- *ARGON and neon*

HOPE it helps you mark me as brilliant

Discussion

17.	Plz tell me answer this question
Answer» ONG>ANSWER: HTTPS://www.gametop.com/category/racing.html Explanation:

17.

Plz tell me answer this question

Answer» ONG>ANSWER:

HTTPS://www.gametop.com/category/racing.html

Explanation:

Discussion

18.	How will you modify the structure of a simple periscope to look under your study table by sitting on a chair?
Answer» ong>Answer: How will you modify the structure of a SIMPLE periscope to LOOK under your study table by sitting on a chair? Draw a neat LABELLED ray diagram and evaluate the TYPE of image that will be observed by you in that case on the basis of the following- a. virtual/ real b. erect/ inverted c. DIMINISHED/ magnified/ same size as the object Explanation: i hope that it would be helpful to you

18.

How will you modify the structure of a simple periscope to look under your study table by sitting on a chair?

Answer»

ong>Answer:

How will you modify the structure of a SIMPLE periscope to LOOK under your study table by sitting on a chair? Draw a neat LABELLED ray diagram and evaluate the TYPE of image that will be observed by you in that case on the basis of the following-

a. virtual/ real

b. erect/ inverted

c. DIMINISHED/ magnified/ same size as the object

Explanation:

i hope that it would be helpful to you

Discussion

19.	Calculate the force applied on a car of 200kg which speed up from 20m/s to 45m/s in 15 seconds
Answer» WER:- GIVEN, Mass of the CAR,m=200kg. Initial VELOCITY,u=20m/s. Final velocity,v=45m/s. Time TAKEN,t=15S Force=mass×acceleration,F=ma F=m(v-u)/t F=200(45-20)/15 F=200kg×25m/s /15s F=5000kgm/15s F=333.3...N HOPE IT HELPS!!.. Pls MARK as brainliest

19.

Calculate the force applied on a car of 200kg which speed up from 20m/s to 45m/s in 15 seconds

Answer»

WER:-

GIVEN,

Mass of the CAR,m=200kg.

Initial VELOCITY,u=20m/s.

Final velocity,v=45m/s.

Time TAKEN,t=15S

Force=mass×acceleration,F=ma

F=m(v-u)/t

F=200(45-20)/15

F=200kg×25m/s /15s

F=5000kgm/15s

F=333.3...N

HOPE IT HELPS!!..

Pls MARK as brainliest

Discussion

20.	What is force explain
Answer» ONG>Answer: A force is a push or pull upon an object RESULTING from the object's interaction with another object. WHENEVER there is an interaction between two objects, there is a force upon each of the objects.

Discussion

21.	Two terminals of a cell are marked as X (+6V) and Y(-6V). The cell is connected to a wire of resistance (2ohm). calculate the work done in carrying a charge of 2C from i) X to Y along the wire Rii) Y to X through the cell
Answer» to y - work done = V X q so workdone in moving 2c from x to y = 6 x 2 = 12 ii) y to x - its INSIDE the cell , so the current is flowing from -6 to +6 potential difference = -6-(+6) = -12 workdone = v x q = -12 x 2 = -24 this maybe correct , although i aint sure!! if there's any correction please comment!! i will RECTIFY!! hope this helps , drop in a THANKS , mark as brainliest!!

21.

Two terminals of a cell are marked as X (+6V) and Y(-6V). The cell is connected to a wire of resistance (2ohm). calculate the work done in carrying a charge of 2C from i) X to Y along the wire Rii) Y to X through the cell

Answer»

to y -

work done = V X q

so workdone in moving 2c from x to y = 6 x 2 = 12

ii) y to x -

its INSIDE the cell , so the current is flowing from -6 to +6

potential difference = -6-(+6) = -12

workdone = v x q = -12 x 2 = -24

this maybe correct , although i aint sure!!

if there's any correction please comment!! i will RECTIFY!!

hope this helps , drop in a THANKS , mark as brainliest!!

Discussion

22.	If the angle between two vectors of equal magnitude P is 0, the magnitude of thedifference of the vectors is(A)2P con la(B)2P sin(C)AP cos(D)P sin
Answer» ONG>EXPLANATION:P> COS (D) P sin✔️✔️✔️✔️✔️

22.

If the angle between two vectors of equal magnitude P is 0, the magnitude of thedifference of the vectors is(A)2P con la(B)2P sin(C)AP cos(D)P sin

Answer» ONG>EXPLANATION:P>

COS

(D)

P sin✔️✔️✔️✔️✔️

Discussion

23.	Iple anChoice questions1) Light travels from one medium atangle of incidence 45° to anothermedim making an angle of refract30°, the bodio of refractive indiceshalf to madia is, [ ]LA) 1:2(B) weil(c) 1:2(D) 2:1
Answer» ong>ANSWER: B is write ANS of your QUE pls follow me

23.

Iple anChoice questions1) Light travels from one medium atangle of incidence 45° to anothermedim making an angle of refract30°, the bodio of refractive indiceshalf to madia is, [ ]LA) 1:2(B) weil(c) 1:2(D) 2:1

Answer»

ong>ANSWER:

B is write ANS of your QUE pls follow me

Discussion

24.	Find the displacement covered to the earth in one year
Answer» ONG>ANSWER: the displacement of EARTHS revolution is 0 as it returns to the starting point after the completion of each YEAR

Discussion

25.	If the resultant of P and Q makes an angle 0, with P and 0, with Q, then (A) 0, 0, if P>Q(B) 0, 0, if P«Q(C) 0,
Answer» ONG>ANSWER: The answer is a OPTION C Mark me BRAINLIEST

25.

If the resultant of P and Q makes an angle 0, with P and 0, with Q, then (A) 0, 0, if P>Q(B) 0, 0, if P«Q(C) 0,

Answer» ONG>ANSWER:

The answer is a OPTION C

Mark me BRAINLIEST

Discussion

26.	3. A body of mass 1 kg is moving with a uniform speed of 1 m/s in a circular path of radius 1 m.The external force acting on the body is(b) 2.4 N(c) 3.1 N(a) 1 NMOTION(d) 0
Answer» ong>EXPLANATION: CENTRIPETAL force=mω 2 r=5×2×2×1= 20N HOPE IT HELPS YOU

26.

3. A body of mass 1 kg is moving with a uniform speed of 1 m/s in a circular path of radius 1 m.The external force acting on the body is(b) 2.4 N(c) 3.1 N(a) 1 NMOTION(d) 0

Answer»

ong>EXPLANATION:

CENTRIPETAL force=mω

2

r=5×2×2×1= 20N

HOPE IT HELPS YOU

Discussion

27.	What is the northern and southern extension of the western coast called?
Answer» ong>Answer: LIKE MY ANSWER... MARK ME AS BRAINLIEST... HEY BABE... PLS FOLLOW ME Explanation: The region consists of THREE sections: the Northern part of the COAST is called the Konkan (Mumbai-Goa), the CENTRAL stretch is called the Kanara or the "Karavali", while the southern stretch is referred to as the Malabar Coast.

27.

What is the northern and southern extension of the western coast called?

Answer»

ong>Answer:

LIKE MY ANSWER...

MARK ME AS BRAINLIEST...

HEY BABE...

PLS FOLLOW ME

Explanation:

The region consists of THREE sections: the Northern part of the COAST is called the Konkan (Mumbai-Goa), the CENTRAL stretch is called the Kanara or the "Karavali", while the southern stretch is referred to as the Malabar Coast.

Discussion

28.	a sinusoidal voltage supply defined as: v(t) = 135 x cos(ωt + 30o) is connected to a pure resistance of 35 ohms. determine its impedance and the peak value of the current flowing through the circuit. draw the corresponding phasor diagram.
Answer» ONG>ANSWER: DGFF gfdgdfg fgdfgdg Explanation:

28.

a sinusoidal voltage supply defined as: v(t) = 135 x cos(ωt + 30o) is connected to a pure resistance of 35 ohms. determine its impedance and the peak value of the current flowing through the circuit. draw the corresponding phasor diagram.

Answer» ONG>ANSWER:

DGFF gfdgdfg fgdfgdg

Explanation:

Discussion

29.	A vector Q has a magnitude of 8 is added to the vector P which lies along the X - axis. The resultant of these two vectors is a third vector R which lies along Y-axis and has a magnitude twice that of P. The magnitude of P isnagnitude(A) 6/5(B) 8/5(C) 12/5(D) 16/5
Answer» ONG>Answer: none of the above OPITIONS are correct the correct answer is 8/root5

29.

A vector Q has a magnitude of 8 is added to the vector P which lies along the X - axis. The resultant of these two vectors is a third vector R which lies along Y-axis and has a magnitude twice that of P. The magnitude of P isnagnitude(A) 6/5(B) 8/5(C) 12/5(D) 16/5

Answer» ONG>Answer:

none of the above OPITIONS are correct

the correct answer is 8/root5

Discussion

30.	The refractive index of water with respect to air is 4/3 the speed of light in water is 2×10^8m/s . Find the speed of light in air
Answer» ong>Answer: The refractive INDEX of WATER with RESPECT to air is 4/3 the speed of light in water is 2×10^8m/s . Find the speed of light in air

30.

The refractive index of water with respect to air is 4/3 the speed of light in water is 2×10^8m/s . Find the speed of light in air

Answer»

ong>Answer:

The refractive INDEX of WATER with RESPECT to air is 4/3 the speed of light in water is 2×10^8m/s . Find the speed of light in air

Discussion

31.	Name the most continuous range of Himalayas consisting of the lofty peaks?
Answer» ong>THE GREAT OR INNER HIMALAYAS OR HIMADRI: This is the NORTHERNMOST RANGE and is also KNOWN as 'Himadri'. This is the most continuous range. It CONTAINS the loftiest peaks. hope it helps

31.

Name the most continuous range of Himalayas consisting of the lofty peaks?

Answer»

ong>THE GREAT OR INNER HIMALAYAS OR HIMADRI: This is the NORTHERNMOST RANGE and is also KNOWN as 'Himadri'. This is the most continuous range. It CONTAINS the loftiest peaks.

hope it helps

Discussion

32.	Which continents of today were part of the Gondwanaland?
Answer» ONG>Explanation: SOUTH America, AFRICA, Antarctica, AUSTRALIA and India were part of the Gondwana land.

Discussion

33.	If the resultant of P and Q makes an angle01 with P and 02 with Q, then
Answer» ONG>ANSWER:P> If the resultant of P that is the CORRECT answer

Discussion

34.	10) When the angle between the force and the displacement is acute then the work done will be a) positiveb) negativec) neutrald) all of these
Answer» ONG>ANSWER: it càn be all of these PLZZZZ FOLLOW me

34.

10) When the angle between the force and the displacement is acute then the work done will be a) positiveb) negativec) neutrald) all of these

Answer» ONG>ANSWER:

it càn be all of these

PLZZZZ FOLLOW me

Discussion

35.	Does potassium hydroxide (KOH) contain hydrogen
Answer» ong>ANSWER: No Explanation: but it is souluable in potassium HYDROXIDE and sulfuric ACID

35.

Does potassium hydroxide (KOH) contain hydrogen

Answer»

ong>ANSWER:

No

Explanation:

but it is souluable in potassium HYDROXIDE and sulfuric ACID

Discussion

36.	Calculate the movementum of a object of mass 300kg moving with 15m/s
Answer» ong>ANSWER: momentum= MASSVELOCITY = 30015 = 45kg.m/s

36.

Calculate the movementum of a object of mass 300kg moving with 15m/s

Answer»

ong>ANSWER:

momentum= MASS*VELOCITY

= 300*15

= 45kg.m/s

Discussion

37.	Name any four factors which are responsible for creating and modifying the relief to its present form.
Answer» ONG>ANSWER: PLEASE CHECK from here

Discussion

38.	Pls answer question 12 a,b and c
Answer» ong>ANSWER: identify the type of TRANSFORMATION

38.

Pls answer question 12 a,b and c

Answer»

ong>ANSWER:

identify the type of TRANSFORMATION

Discussion

39.	Explain the myopia and hypermetropia with ray diagrams .
Answer» ong>ANSWER: , EXPLANATION: please make me brainlist Dear and follow me on

39.

Explain the myopia and hypermetropia with ray diagrams .

Answer»

ong>ANSWER:

,

EXPLANATION:

please make me brainlist Dear and follow me on

Discussion

40.	Angular momentum in geometrical form
Answer» ong>Answer: This is your answer Explanation: hope it's HELP you so MARK me BRAINLIST

40.

Angular momentum in geometrical form

Answer»

ong>Answer:

This is your answer

Explanation:

hope it's HELP you

so MARK me BRAINLIST

Discussion

41.	What good manner________,,
Answer» ong>Answer: The treatment of other people with COURTESY and politeness, and showing CORRECT public behaviour. In most countries, it is considered to be GOOD manners to offer your SEAT to an elderly person on CROWDED public transport.

41.

What good manner________,,

Answer»

ong>Answer:

The treatment of other people with COURTESY and politeness, and showing CORRECT public behaviour. In most countries, it is considered to be GOOD manners to offer your SEAT to an elderly person on CROWDED public transport.

Discussion

42.	9) What is the commercial unit of energy?a) kWhb) kWc) Nmd) Joule
Answer» ONG>ANSWER: kwh is the answer ........i HOPE it helps

42.

9) What is the commercial unit of energy?a) kWhb) kWc) Nmd) Joule

Answer» ONG>ANSWER:

kwh is the answer

........i HOPE it helps

Discussion

43.	The period of revolution of anobject in UCM is 2 sec , it'sangular speed will be
Answer» ONG>Answer: 2000m/s and PLZ MARK me as a BRAINLIST

Discussion

44.	Please answer this question right
Answer» ong>Answer: Very simple a. UNIFORMLY accelerated motion B. area under v-t graph gives distance c. from a to b as there is no change in velocity d. a=(v-u)/t ;40-0/10=4m/s^2 e. SIMILAR to d acc is -4

44.

Please answer this question right

Answer»

ong>Answer:

Very simple

a. UNIFORMLY accelerated motion

B. area under v-t graph gives distance

c. from a to b as there is no change in velocity

d. a=(v-u)/t ;40-0/10=4m/s^2

e. SIMILAR to d acc is -4

Discussion

45.	at what angel should a body be projected with a velocity 20/sec just to pass over the obstalace 12m high at a horizontal distance of 24m ?take g= 10m/sec
Answer» ong>Answer: $\boxed{\mathfrak{Angle \ of \ projection \ (\theta) = {tan}^{ - 1} (2) \: or \: = 53 \degree}}$ Given: INITIAL velocity of projectile (u) = 20 m/s Horizontal distance (x) = 24 m Vertical distance (y) = 12 m Accelration due to gravity (g) = 10 m/s Explanation: EQUATION of trajectory: $\boxed{ \bold{y = xtan \theta - \frac{g {x}^{2} }{2 {u}^{2} {cos}^{2} \theta } }}$ θ → Angle of projection By substituting VALUES in the equation we GET: $\rm \implies 12 = 24 \: tan \theta - \dfrac{10 \times {(24)}^{2} }{2 \times {(20)}^{2} \times {cos}^{2} \theta} \\ \\ \rm \implies 12 = 24 \: tan \theta - \dfrac{5760}{800 \: {cos}^{2} \theta} \\ \\ \rm \implies 12 = 24 \:tan \theta - \dfrac{36 \: {sec}^{2} \theta }{5} \\ \\ \rm \implies (12 = 24 \:tan \theta - \dfrac{36 \: {sec}^{2} \theta }{5} ) \times 5 \\ \\ \rm \implies 60= 120 \:tan \theta - 36 \: {sec}^{2} \theta \\ \\ \rm {sec}^{2} \theta = 1 + {tan}^{2} \theta : \\ \rm \implies 60 = 120 \:tan \theta - 36(1 + {tan}^{2} \theta) \\ \\ \rm \implies 60 = 120 \:tan \theta - 36 - 36 {tan}^{2} \theta) \\ \\ \rm \implies 36 \: {tan}^{2} \theta - 120 \: tan \theta + 96 = 0 \\ \\ \rm \implies 12(3 \: {tan}^{2} \theta - 10 \: tan \theta + 8) = 0 \\ \\ \rm \implies 3 \: {tan}^{2} \theta - 10 \: tan \theta + 8 = 0 \\ \\ \rm \implies 3 \: {tan}^{2} \theta - 6 \: tan \theta - 4\: tan \theta+ 8 = 0 \\ \\ \rm \implies 3 \: tan \theta(tan \theta - 2) - 4(tan \theta - 2) = 0 \\ \\ \rm \implies (tan \theta - 2)(3 \: tan \theta - 4) = 0 \\ \\ \rm \implies tan \theta = 2 \: \: \: \: or \: \: \: \: tan \theta = \frac{4}{3} \\ \\ \rm \implies \theta = {tan}^{ - 1} (2) \: \: \: \: or \: \: \: \: \theta = {tan}^{ - 1} ( \dfrac{4}{3} ) \\ \\ \rm \implies \theta = {tan}^{ - 1} (2) \: \: \: \: or \: \: \: \: \theta = 53 \degree$

45.

at what angel should a body be projected with a velocity 20/sec just to pass over the obstalace 12m high at a horizontal distance of 24m ?take g= 10m/sec

Answer»

ong>Answer:

$\boxed{\mathfrak{Angle \ of \ projection \ (\theta) = {tan}^{ - 1} (2) \: or \: = 53 \degree}}$

Given:

INITIAL velocity of projectile (u) = 20 m/s

Horizontal distance (x) = 24 m

Vertical distance (y) = 12 m

Accelration due to gravity (g) = 10 m/s

Explanation:

EQUATION of trajectory:

$\boxed{ \bold{y = xtan \theta - \frac{g {x}^{2} }{2 {u}^{2} {cos}^{2} \theta } }}$

θ → Angle of projection

By substituting VALUES in the equation we GET:

$\rm \implies 12 = 24 \: tan \theta - \dfrac{10 \times {(24)}^{2} }{2 \times {(20)}^{2} \times {cos}^{2} \theta} \\ \\ \rm \implies 12 = 24 \: tan \theta - \dfrac{5760}{800 \: {cos}^{2} \theta} \\ \\ \rm \implies 12 = 24 \:tan \theta - \dfrac{36 \: {sec}^{2} \theta }{5} \\ \\ \rm \implies (12 = 24 \:tan \theta - \dfrac{36 \: {sec}^{2} \theta }{5} ) \times 5 \\ \\ \rm \implies 60= 120 \:tan \theta - 36 \: {sec}^{2} \theta \\ \\ \rm {sec}^{2} \theta = 1 + {tan}^{2} \theta : \\ \rm \implies 60 = 120 \:tan \theta - 36(1 + {tan}^{2} \theta) \\ \\ \rm \implies 60 = 120 \:tan \theta - 36 - 36 {tan}^{2} \theta) \\ \\ \rm \implies 36 \: {tan}^{2} \theta - 120 \: tan \theta + 96 = 0 \\ \\ \rm \implies 12(3 \: {tan}^{2} \theta - 10 \: tan \theta + 8) = 0 \\ \\ \rm \implies 3 \: {tan}^{2} \theta - 10 \: tan \theta + 8 = 0 \\ \\ \rm \implies 3 \: {tan}^{2} \theta - 6 \: tan \theta - 4\: tan \theta+ 8 = 0 \\ \\ \rm \implies 3 \: tan \theta(tan \theta - 2) - 4(tan \theta - 2) = 0 \\ \\ \rm \implies (tan \theta - 2)(3 \: tan \theta - 4) = 0 \\ \\ \rm \implies tan \theta = 2 \: \: \: \: or \: \: \: \: tan \theta = \frac{4}{3} \\ \\ \rm \implies \theta = {tan}^{ - 1} (2) \: \: \: \: or \: \: \: \: \theta = {tan}^{ - 1} ( \dfrac{4}{3} ) \\ \\ \rm \implies \theta = {tan}^{ - 1} (2) \: \: \: \: or \: \: \: \: \theta = 53 \degree$

Discussion

46.	The most continuous range consisting of the loftiest peaks with an average height of 6,000 metres is known as the ________
Answer» ong>Answer: HEY MATE! The answer to your question is: HIMADRI range *Hope this HELPS you*.

46.

The most continuous range consisting of the loftiest peaks with an average height of 6,000 metres is known as the ________

Answer»

ong>Answer:

HEY MATE! The answer to your question is:

HIMADRI range

Hope this HELPS you.

Discussion

47.	The Northern Plains has been formed by the interplay of three major river systems, namely ________ .
Answer» ong>Explanation: the punjab PLAIN , the GANGA plain ,the BRAHMAPUTRA plain

47.

The Northern Plains has been formed by the interplay of three major river systems, namely ________ .

Answer»

ong>Explanation:

the punjab PLAIN , the GANGA plain ,the BRAHMAPUTRA plain

Discussion

48.	Nikita Tirkay od: 2212) Thefind23ratio of amplitudestheratioof twowaves: Londnessand in) pitenof their
Answer» ONG>EXPLANATION: व्हाट इज द क्वेश्चन आई कांट अंडरस्टैंड द क्वेश्चन

Discussion

49.	Pls tell this answer this one is for me i have to learn for test tomorrow
Answer» ONG>Answer: SORY BRO don't KNOW the answer

Discussion

50.	2uF 24HH34uFHHH04 माइक्रो फैरडO 7/12 माइक्रो फैरडO5 माइक्रो फैरड0 12/7 माइक्रो फैरड
Answer» ong>Answer: I do not understand or U R just giving FREE points,???

50.

2uF 24HH34uFHHH04 माइक्रो फैरडO 7/12 माइक्रो फैरडO5 माइक्रो फैरड0 12/7 माइक्रो फैरड

Answer»

ong>Answer:

I do not understand or U R just giving FREE points,???

Discussion

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