13232 + Interview Questions in Physics Page 39 InterviewSolution

1901.	Express the relationship between the C.G.S. and S.I. units of density.
Answer» Express the relationship between the C.G.S. and S.I. units of density.

Discussion

1902.	If the engine of a 1400kg car uses 25kW to maintain an average speed of 17m/s, calculate the force acting on the car due to air and rolling resistance.
Answer» If the engine of a 1400kg car uses 25kW to maintain an average speed of 17m/s, calculate the force acting on the car due to air and rolling resistance.

Discussion

1903.	At a neutral point, the resultant magnetic field is :
Answer» At a neutral point, the resultant magnetic field is :

Discussion

1904.	A car travels a distance 100 m with a constant acceleration and average velocity of 20 m s−1.The final velocity acquired by the car is 25 m s−1.Find:(i) the initial velocity and (ii) acceleration of car.
Answer» A car travels a distance 100 m with a constant acceleration and average velocity of 20 $m s^{- 1}$ .The final velocity acquired by the car is 25 $m s^{- 1}$ .Find:(i) the initial velocity and (ii) acceleration of car.

Discussion

1905.	A car moving at 10 ms−1 is to be brought to rest within 15 seconds. What is the magnitude of force required to achieve this? Take mass of car to be 180 kg.
Answer» A car moving at 10 $m s^{- 1}$ is to be brought to rest within 15 seconds. What is the magnitude of force required to achieve this? Take mass of car to be $180 k g$ .

Discussion

1906.	A body of mass 5 kg is thrown vertically upwards from ground with a velocity of 20 ms−1. What will be its momentum just before hitting the ground? Assume upward direction as positive.
Answer» A body of mass $5 k g$ is thrown vertically upwards from ground with a velocity of $20 m s^{- 1}$ . What will be its momentum just before hitting the ground? Assume upward direction as positive.

Discussion

1907.	14. A body of mass 20g has a volume of 5 cc.The maximum possible error in the measurement of mass and volume respectively are 0.01g and 0.1 cc.The maximum percentage error in the density will be nearest to ?
Answer» 14. A body of mass 20g has a volume of 5 cc.The maximum possible error in the measurement of mass and volume respectively are 0.01g and 0.1 cc.The maximum percentage error in the density will be nearest to ?

Discussion

1908.	Question 8The value of quantity G in the law of gravitation(a) depends on mass of earth only(b) depends on radius of earth only(c) depends on both mass and radius of earth(d) is independent of mass and radius of the earth
Answer» Question 8 The value of quantity G in the law of gravitation (a) depends on mass of earth only (b) depends on radius of earth only (c) depends on both mass and radius of earth (d) is independent of mass and radius of the earth

Discussion

1909.	Since power=work/time. So here, define 1 work and 1 power
Answer» Since power=work/time. So here, define 1 work and 1 power

Discussion

1910.	__(Food pyramids/Food webs) is a figure or shape that has a large base, which continues narrowing at each next level upwards, finally ending as a small point.
Answer» __(Food pyramids/Food webs) is a figure or shape that has a large base, which continues narrowing at each next level upwards, finally ending as a small point.

Discussion

1911.	If velocity (v) , acceleration (a) and force (f) are taken as fundamental quantities, then moment of momentum about the rotational axis will have the dimensional formulae (1) fv^2a^{-2} (2) f^2v^2a^{-2} (3) fv^3a^{-2} (4) f^2va
Answer» If velocity (v) , acceleration (a) and force (f) are taken as fundamental quantities, then moment of momentum about the rotational axis will have the dimensional formulae (1) fv^2a^{-2} (2) f^2v^2a^{-2} (3) fv^3a^{-2} (4) f^2va

Discussion

1912.	The loudness of sound is determined by its _____________
Answer» The loudness of sound is determined by its _____________

Discussion

1913.	thickness of a pencil measured by usinga screw guage (least count.0.001cm) comes out to be 0.802cm. the % error in the measurement is?
Answer» thickness of a pencil measured by usinga screw guage (least count.0.001cm) comes out to be 0.802cm. the % error in the measurement is?

Discussion

1914.	Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?
Answer» Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?

1914.

Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?

Answer»

Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?

Discussion

1915.	A balloon rises from rest with a constant acceleration of g/8.a stone is released when the balloon rises to height h. The time taken by the stone to reach the ground is
Answer» A balloon rises from rest with a constant acceleration of g/8.a stone is released when the balloon rises to height h. The time taken by the stone to reach the ground is

Discussion

1916.	ntTwo weights W1 and W2 are suspended to the two strings on an ntfrictionless pulley. When the pulley is pulled up with an acceleration 9, then the tension in the string is :n nt(a)4W1W2 /W1 +W2n ntn nt(b)W1W2/W1 + W2n ntn nt(c)2W1W2/W1 + W2n ntn nt(d)W1 + W2/2n ntn
Answer» ntTwo weights W1 and W2 are suspended to the two strings on an ntfrictionless pulley. When the pulley is pulled up with an acceleration 9, then the tension in the string is :n nt(a)4W1W2 /W1 +W2n ntn nt(b)W1W2/W1 + W2n ntn nt(c)2W1W2/W1 + W2n ntn nt(d)W1 + W2/2n ntn

Discussion

1917.	A 6V battery is connected to the terminals of a 3 metre long wire of uniform thickness and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50cm will be
Answer» A 6V battery is connected to the terminals of a 3 metre long wire of uniform thickness and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50cm will be

Discussion

1918.	A piezoelectric accelerometer has a transfer function of 60 mv/g and natural frequency of oscillation as 4.5 kHz . In a vibration test at 110 Hz a reading of 3.6 V peak results what is the magnitude of peak displacement in mm?(correct up to 2 decimal places) 1.23
Answer» A piezoelectric accelerometer has a transfer function of 60 mv/g and natural frequency of oscillation as 4.5 kHz . In a vibration test at 110 Hz a reading of 3.6 V peak results what is the magnitude of peak displacement in mm? (correct up to 2 decimal places) 1.23

Discussion

1919.	What is the difference between these two cases: (Please explain me in simple words) 1) Average velocity = Total Displacement / Total time 2) Average velocity = (Initial velocity + Final velocity) / 2 = [(u+v)/2]
Answer» What is the difference between these two cases: (Please explain me in simple words) 1) Average velocity = Total Displacement / Total time 2) Average velocity = (Initial velocity + Final velocity) / 2 = [(u+v)/2]

Discussion

1920.	Match the pairsGroup 'A' Group 'B'(a) Flute (1) Frequency less than 20 Hz(b) Frequency (2) Frequency more than 20000 Hz(c) Sound level (3) Vibrations in the air (d) Ultrasonic sound (4) Measured in Hz(e) Infrasonic sound (5) Decibel
Answer» Match the pairs Group 'A' Group 'B' (a) Flute (1) Frequency less than 20 Hz (b) Frequency (2) Frequency more than 20000 Hz (c) Sound level (3) Vibrations in the air (d) Ultrasonic sound (4) Measured in Hz (e) Infrasonic sound (5) Decibel

Discussion

1921.	The velocity of a particle at an instant is 10 metre per second after 5 second the velocity of the particle is 20 metre per second velocity at 3 seconds before from the instant when the velocity of a particle is 10 metre per second
Answer» The velocity of a particle at an instant is 10 metre per second after 5 second the velocity of the particle is 20 metre per second velocity at 3 seconds before from the instant when the velocity of a particle is 10 metre per second

Discussion

1922.	State one factor on which the magnitude fo a non-contact force depends. How does it depend on the factor stated by you?
Answer» State one factor on which the magnitude fo a non-contact force depends. How does it depend on the factor stated by you?

Discussion

1923.	Question 24What is the difference in colours of the sun observed during sunrise/sunset and noon? Give explanation for each.
Answer» Question 24 What is the difference in colours of the sun observed during sunrise/sunset and noon? Give explanation for each.

Discussion

1924.	An object of mass 2 kg is moving with a speed of 18 km/h. Thekinetic energy of the object is
Answer» An object of mass 2 kg is moving with a speed of 18 km/h. The kinetic energy of the object is

Discussion

1925.	Two blocks were held against a frictionless wall and released, the surfaces between the block have friction. If mass of A is less than mass of B, then which of the following is correct
Answer» Two blocks were held against a frictionless wall and released, the surfaces between the block have friction. If mass of A is less than mass of B, then which of the following is correct

Discussion

1926.	Arocket is fired vertically with a speed of 5 km s–1from the earth’s surface. How far from the earth does therocket go before returning to the earth? Mass of the earth = 6.0 ×1024kg; mean radius of the earth = 6.4 ×106m; G=6.67 ×10–11N m2kg–2.
Answer» A rocket is fired vertically with a speed of 5 km s^–1 from the earth’s surface. How far from the earth does the rocket go before returning to the earth? Mass of the earth = 6.0 × 10²⁴ kg; mean radius of the earth = 6.4 × 10⁶ m; G= 6.67 × 10^–11 N m² kg^–^2.

Discussion

1927.	Give reasons: A)When a bus takes a U-turn,passengers sitting inside are thrown a side. B)It is easier to stop a tennis ball than a cricket ball moving with the samespeed. C)A passenger jumping out of a rapidly moving bus falls forward with his face downwards. D)A person sitting in bus falls forward when moving bus suddenly stops and people sitting in bus fall backward when bus suddenly starts.
Answer» Give reasons: A)When a bus takes a U-turn,passengers sitting inside are thrown a side. B)It is easier to stop a tennis ball than a cricket ball moving with the samespeed. C)A passenger jumping out of a rapidly moving bus falls forward with his face downwards. D)A person sitting in bus falls forward when moving bus suddenly stops and people sitting in bus fall backward when bus suddenly starts.

1927.

Give reasons: A)When a bus takes a U-turn,passengers sitting inside are thrown a side. B)It is easier to stop a tennis ball than a cricket ball moving with the samespeed. C)A passenger jumping out of a rapidly moving bus falls forward with his face downwards. D)A person sitting in bus falls forward when moving bus suddenly stops and people sitting in bus fall backward when bus suddenly starts.

Answer»

Give reasons:

A)When a bus takes a U-turn,passengers sitting inside are thrown a side.

B)It is easier to stop a tennis ball than a cricket ball moving with the samespeed.

C)A passenger jumping out of a rapidly moving bus falls forward with his face downwards.

D)A person sitting in bus falls forward when moving bus suddenly stops and people sitting in bus fall backward when bus suddenly starts.

Discussion

1928.	Ram, standing on the ground throws a ball vertically upward towards his friend. Rajesh was standing at the top of a building. If the velocity with which it was thrown is just sufficient to reach Rajesh, then at the instant when it reaches Rajesh, he observes that the ball has : Options:Zero velocity and zero acceleration 2. Non-zero velocity and zero acceleration 3. Non-zero velocity and non-zero acceleration 4. Zero velocity and non-zero acceleration
Answer» Ram, standing on the ground throws a ball vertically upward towards his friend. Rajesh was standing at the top of a building. If the velocity with which it was thrown is just sufficient to reach Rajesh, then at the instant when it reaches Rajesh, he observes that the ball has : Options:Zero velocity and zero acceleration 2. Non-zero velocity and zero acceleration 3. Non-zero velocity and non-zero acceleration 4. Zero velocity and non-zero acceleration

Discussion

1929.	A man standing on a railway platform noticed that a train took 21 seconds to cross the platform (this means the time elapsed from the moment the engine enters the platform till the last compartment leaves the platform) which is 88 meters long, and that it took 9 seconds to pass him. Assuming that the train was moving with uniform speed, what is the length of the train in metres?
Answer» A man standing on a railway platform noticed that a train took 21 seconds to cross the platform (this means the time elapsed from the moment the engine enters the platform till the last compartment leaves the platform) which is 88 meters long, and that it took 9 seconds to pass him. Assuming that the train was moving with uniform speed, what is the length of the train in metres?

Discussion

1930.	Why aren't we attracted to each other even though gravitational force acts between us?
Answer» Why aren't we attracted to each other even though gravitational force acts between us?

Discussion

1931.	Though the density of a solid is more than that of the density of a liquid why does ice floats on water?
Answer» Though the density of a solid is more than that of the density of a liquid why does ice floats on water?

Discussion

1932.	A vector quantity has one of the following:
Answer» A vector quantity has one of the following:

Discussion

1933.	A stationary source of sound wave is having frequency f .sound is reflected from a large vertical plane surface moving towards the source with the speed v .if speed of sound in medium is C then frequency of reflected wave received by the stationary by the observer near the source is ??
Answer» A stationary source of sound wave is having frequency f .sound is reflected from a large vertical plane surface moving towards the source with the speed v .if speed of sound in medium is C then frequency of reflected wave received by the stationary by the observer near the source is ??

Discussion

1934.	an s.h.m potential energy U=U_0-U_0COSAX.Time period=? give detai
Answer» an s.h.m potential energy U=U_0-U_0COSAX.Time period=? give detai

Discussion

1935.	What is the nature of image formed on the retina of the eye?
Answer» What is the nature of image formed on the retina of the eye?

Discussion

1936.	AN16) A slender homogeneous rod of length 2 L floats partly immersed in water being supported by a string fastenedto one of its end. The specific gravity of the rod is 0.75. The length of rod that extends out of water is 1 L 2 l/2 3 l/4 4 l/3
Answer» AN16) A slender homogeneous rod of length 2 L floats partly immersed in water being supported by a string fastenedto one of its end. The specific gravity of the rod is 0.75. The length of rod that extends out of water is 1 L 2 l/2 3 l/4 4 l/3

Discussion

1937.	If an object is moving in circular path then average velocity can be zero even If the average speed is not zero
Answer» If an object is moving in circular path then average velocity can be zero even If the average speed is not zero

Discussion

1938.	A solid block of density ρS is immersed in a liquid of density ρL, and it floats half submerged in the liquid. What is the apparent weight of the solid? (Given: True weight of the solid =W)
Answer» A solid block of density $ρ_{S}$ is immersed in a liquid of density $ρ_{L}$ , and it floats half submerged in the liquid. What is the apparent weight of the solid? (Given: True weight of the solid $= W$ )

Discussion

1939.	The magnetic field line passing through the centre of a circular current carrying conductor is a
Answer» The magnetic field line passing through the centre of a circular current carrying conductor is a

Discussion

1940.	if an electric field is given by 10i^+3j^+4k^ calculate the electric flux through a surface of area 10 units lyingin yz plan
Answer» if an electric field is given by 10i^+3j^+4k^ calculate the electric flux through a surface of area 10 units lyingin yz plan

Discussion

1941.	If the momentum of an object is increased by 10% then its kinetic sindhu will be increased by?
Answer» If the momentum of an object is increased by 10% then its kinetic sindhu will be increased by?

Discussion

1942.	Fill in the blanks.(1) Sound waves need …………….. medium for propagation.(2) Technique of echocardiography is based on reflecting property of …………….. waves.(3) Sound produced by vibration of simple pendulum is …………….. sound.(4) For determination of the depth of the sea …………….. technique is used.(5) Pitch of a sound depends upon ………………. of wave.
Answer» Fill in the blanks. (1) Sound waves need …………….. medium for propagation. (2) Technique of echocardiography is based on reflecting property of …………….. waves. (3) Sound produced by vibration of simple pendulum is …………….. sound. (4) For determination of the depth of the sea …………….. technique is used. (5) Pitch of a sound depends upon ………………. of wave.

1942.

Fill in the blanks.(1) Sound waves need …………….. medium for propagation.(2) Technique of echocardiography is based on reflecting property of …………….. waves.(3) Sound produced by vibration of simple pendulum is …………….. sound.(4) For determination of the depth of the sea …………….. technique is used.(5) Pitch of a sound depends upon ………………. of wave.

Answer»

Fill in the blanks.

(1) Sound waves need …………….. medium for propagation.

(2) Technique of echocardiography is based on reflecting property of …………….. waves.

(3) Sound produced by vibration of simple pendulum is …………….. sound.

(4) For determination of the depth of the sea …………….. technique is used.

(5) Pitch of a sound depends upon ………………. of wave.

Discussion

1943.	A particle starting from rest undergoes a rectilinear motion with acceleration a.The variation of a with time t I'd shown below. The maximum velocity attained by the particle during its motion is
Answer» A particle starting from rest undergoes a rectilinear motion with acceleration a.The variation of a with time t I'd shown below. The maximum velocity attained by the particle during its motion is

Discussion

1944.	A vernier has 10 divisions and they are equal to 9 divisions of the main scale in length. If the main scale is calibrated in mm, what is its least count?
Answer» A vernier has 10 divisions and they are equal to 9 divisions of the main scale in length. If the main scale is calibrated in mm, what is its least count?

Discussion

1945.	Why it does not follow law of conservation of mass? 12g of C is heated in vacuum and on cooling there is no change in mass
Answer» Why it does not follow law of conservation of mass? 12g of C is heated in vacuum and on cooling there is no change in mass

Discussion

1946.	5.a man running on a hill with velocity (2i+3j) m/s w.r.t. ground.he feels that rain drops are falling vertically with velocity 4m/s. If man is running on hill in downward direction with same speed. Find velocity of rain w.r.t. man.
Answer» 5.a man running on a hill with velocity (2i+3j) m/s w.r.t. ground.he feels that rain drops are falling vertically with velocity 4m/s. If man is running on hill in downward direction with same speed. Find velocity of rain w.r.t. man.

Discussion

1947.	△ G^° for reversible process at equilibrium is??
Answer» △ G^° for reversible process at equilibrium is??

Discussion

1948.	(4) 4ErA ZaroTwovery small spheres A and Bare charged with +10 and +20 coulomb respectively and separated by a distanceof 80 cm The electric field at point on the line joining the centres of the two spheres will be zero at almost howmuch distance from A?(2) 33 cm(1) 20 cm(4) 60 cm3) 45 cmDalbi 110005 Ph. 011-4762345ow
Answer» (4) 4ErA ZaroTwovery small spheres A and Bare charged with +10 and +20 coulomb respectively and separated by a distanceof 80 cm The electric field at point on the line joining the centres of the two spheres will be zero at almost howmuch distance from A?(2) 33 cm(1) 20 cm(4) 60 cm3) 45 cmDalbi 110005 Ph. 011-4762345ow

Discussion

1949.	Explain why when fireman directs a powerful stream of water on a fire from a hose pipe tend to go backward
Answer» Explain why when fireman directs a powerful stream of water on a fire from a hose pipe tend to go backward

Discussion

1950.	Derive velocity time relations and position time relation for a uniformly accelerated motion by a grephical method
Answer» Derive velocity time relations and position time relation for a uniformly accelerated motion by a grephical method

Discussion

Explore topic-wise InterviewSolutions in .

Express the relationship between the C.G.S. and S.I. units of density.

If the engine of a 1400kg car uses 25kW to maintain an average speed of 17m/s, calculate the force acting on the car due to air and rolling resistance.

At a neutral point, the resultant magnetic field is :

A car travels a distance 100 m with a constant acceleration and average velocity of 20 m s−1.The final velocity acquired by the car is 25 m s−1.Find:(i) the initial velocity and (ii) acceleration of car.

A car moving at 10 ms−1 is to be brought to rest within 15 seconds. What is the magnitude of force required to achieve this? Take mass of car to be 180 kg.

A body of mass 5 kg is thrown vertically upwards from ground with a velocity of 20 ms−1. What will be its momentum just before hitting the ground? Assume upward direction as positive.

14. A body of mass 20g has a volume of 5 cc.The maximum possible error in the measurement of mass and volume respectively are 0.01g and 0.1 cc.The maximum percentage error in the density will be nearest to ?

Question 8The value of quantity G in the law of gravitation(a) depends on mass of earth only(b) depends on radius of earth only(c) depends on both mass and radius of earth(d) is independent of mass and radius of the earth

Since power=work/time. So here, define 1 work and 1 power

__(Food pyramids/Food webs) is a figure or shape that has a large base, which continues narrowing at each next level upwards, finally ending as a small point.

If velocity (v) , acceleration (a) and force (f) are taken as fundamental quantities, then moment of momentum about the rotational axis will have the dimensional formulae (1) fv^2a^{-2} (2) f^2v^2a^{-2} (3) fv^3a^{-2} (4) f^2va

The loudness of sound is determined by its _____________

thickness of a pencil measured by usinga screw guage (least count.0.001cm) comes out to be 0.802cm. the % error in the measurement is?

Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?

A balloon rises from rest with a constant acceleration of g/8.a stone is released when the balloon rises to height h. The time taken by the stone to reach the ground is

ntTwo weights W1 and W2 are suspended to the two strings on an ntfrictionless pulley. When the pulley is pulled up with an acceleration 9, then the tension in the string is :n nt(a)4W1W2 /W1 +W2n ntn nt(b)W1W2/W1 + W2n ntn nt(c)2W1W2/W1 + W2n ntn nt(d)W1 + W2/2n ntn

A 6V battery is connected to the terminals of a 3 metre long wire of uniform thickness and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50cm will be

A piezoelectric accelerometer has a transfer function of 60 mv/g and natural frequency of oscillation as 4.5 kHz . In a vibration test at 110 Hz a reading of 3.6 V peak results what is the magnitude of peak displacement in mm?(correct up to 2 decimal places) 1.23

What is the difference between these two cases: (Please explain me in simple words) 1) Average velocity = Total Displacement / Total time 2) Average velocity = (Initial velocity + Final velocity) / 2 = [(u+v)/2] ​​​​​​

Match the pairsGroup 'A' Group 'B'(a) Flute (1) Frequency less than 20 Hz(b) Frequency (2) Frequency more than 20000 Hz(c) Sound level (3) Vibrations in the air (d) Ultrasonic sound (4) Measured in Hz(e) Infrasonic sound (5) Decibel

The velocity of a particle at an instant is 10 metre per second after 5 second the velocity of the particle is 20 metre per second velocity at 3 seconds before from the instant when the velocity of a particle is 10 metre per second

State one factor on which the magnitude fo a non-contact force depends. How does it depend on the factor stated by you?

Question 24What is the difference in colours of the sun observed during sunrise/sunset and noon? Give explanation for each.

An object of mass 2 kg is moving with a speed of 18 km/h. Thekinetic energy of the object is

Two blocks were held against a frictionless wall and released, the surfaces between the block have friction. If mass of A is less than mass of B, then which of the following is correct

Arocket is fired vertically with a speed of 5 km s–1from the earth’s surface. How far from the earth does therocket go before returning to the earth? Mass of the earth = 6.0 ×1024kg; mean radius of the earth = 6.4 ×106m; G=6.67 ×10–11N m2kg–2.

Why aren't we attracted to each other even though gravitational force acts between us?

Though the density of a solid is more than that of the density of a liquid why does ice floats on water?

A vector quantity has one of the following:

A stationary source of sound wave is having frequency f .sound is reflected from a large vertical plane surface moving towards the source with the speed v .if speed of sound in medium is C then frequency of reflected wave received by the stationary by the observer near the source is ??

an s.h.m potential energy U=U_0-U_0COSAX.Time period=? give detai

What is the nature of image formed on the retina of the eye?

AN16) A slender homogeneous rod of length 2 L floats partly immersed in water being supported by a string fastenedto one of its end. The specific gravity of the rod is 0.75. The length of rod that extends out of water is 1 L 2 l/2 3 l/4 4 l/3

If an object is moving in circular path then average velocity can be zero even If the average speed is not zero

A solid block of density ρS is immersed in a liquid of density ρL, and it floats half submerged in the liquid. What is the apparent weight of the solid? (Given: True weight of the solid =W)

The magnetic field line passing through the centre of a circular current carrying conductor is a

if an electric field is given by 10i^+3j^+4k^ calculate the electric flux through a surface of area 10 units lyingin yz plan

If the momentum of an object is increased by 10% then its kinetic sindhu will be increased by?

A particle starting from rest undergoes a rectilinear motion with acceleration a.The variation of a with time t I'd shown below. The maximum velocity attained by the particle during its motion is

A vernier has 10 divisions and they are equal to 9 divisions of the main scale in length. If the main scale is calibrated in mm, what is its least count?

Why it does not follow law of conservation of mass? 12g of C is heated in vacuum and on cooling there is no change in mass

5.a man running on a hill with velocity (2i+3j) m/s w.r.t. ground.he feels that rain drops are falling vertically with velocity 4m/s. If man is running on hill in downward direction with same speed. Find velocity of rain w.r.t. man.

△ G^° for reversible process at equilibrium is??

Explain why when fireman directs a powerful stream of water on a fire from a hose pipe tend to go backward

Derive velocity time relations and position time relation for a uniformly accelerated motion by a grephical method

What is the difference between these two cases: (Please explain me in simple words) 1) Average velocity = Total Displacement / Total time 2) Average velocity = (Initial velocity + Final velocity) / 2 = [(u+v)/2]