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Q. A gas expands and does P-V work on the surroundings equal to 307 J. At the same time, it absorbs 155 J of heat from the surroundings. Calculate the change in energy of the gas.

Q. If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Assume the ball is a solid sphere of radius 3.7 and mass 0.14.

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Category:- Physics
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