Q.

A light container having a diatomic gas enclosed within is moving with velocity v.  Mass of the gas is M and number of moles is n and temperature is T. Find kinetic  energy of the gas with respect to centre of mass and with respect to ground.

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answer is 4.

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Detailed Solution

By law of equipartition of energy,Energy of gas at temperature T is = fnRT2 Here, f = 5.So,  E=5nRT2.This energy is with respect to centre of mass.For finding energy with respect to ground, an extra factor of 12Mv2 need to be  added.
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