A shell explodes into two fragments, one fragment 25 times heavier than the other. If any gas from the explosion has negligible mass, then O the kinetic energy change of the heavier fragment is 25 times as great as the kinetic energy change of the lighter fragment. the kinetic energy change of the lighter fragment is 25 times as great as the kinetic energy change of the heavier fragment. the momentum change of the lighter fragment is exactly the same as the momentum change of the heavier fragment. O the momentum change of the lighter fragment is 25 times as great as the momentum change of the heavier fragment. O the momentum change of the heavier fragment is 25 times as great as the momentum change of the lighter fragment.

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.