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ball P of mass 0.25kg loses one-third of its velocity when it make a

head on a collision with an identical ball Q at rest .After collision,Q

moves off with a speed of 2m/s in the original direction of p.Calculate

the initial velocity of P?

ball P of mass 0.25kg loses one-third of its velocity when it make a

head on a collision with an identical ball Q at rest .After collision,Q

moves off with a speed of 2m/s in the original direction of p.Calculate

the initial velocity of P?

Answered! |

when two balls are projected horizontally from the same point and velocity, but the time difference for the second ball to projected is just one second after the first one, at what point in the motion will the balls be closest to each other?

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A rider of mass 40 kg sits on a sled of mass 10 kg at the top of a hill that is 15 m above level ground. The sled is given a push, providing 1600 J of kinetic energy to the sled and the rider. What is the kinetic energy of the sled and rider at the bottom of the hill?

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At the low point in its swing, a pendulum bob with a mass of 0.2 kg has a velocity of 5m/s. How high will the bob swing above this low point?

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A 0.2 kg ball is twirled at the end of a string in a horizontal circle with a radius of 0.6 m. The ball travels with a constant speed of 4.0m/s. What are the values of the horizontal and vertical components of the tension in the string?

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what is the best book to read to understand statistical mechanics?

thank you

thank you

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3.1A tungsten filament is 35 mm long and has a radius of 7.5 mm. Calculate the current emitted from this filament at temperatures of 2400 °C and 2500 ºC.

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can a compound semi-conductor be considered as extrinsic semi-conductor due to its compound form?

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If light travels in a straight line, why a rainbow appears curved?

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A hollow cylinder of radius 10 cm rotates about its axis which is vertical. A small body remains in contact with the inner wall if the frequency of rotation is 200 per minute but falls at lower frequencies. Find the com-efficient of friction between the body and the cylinder.

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