a given amount of heat energy can be completely converted to mechanical energy in

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Answer 1

A given amount of heat energy cannot be completely converted to mechanical energy in any process. According to the laws of thermodynamics, there will always be some energy loss in the form of waste heat during any energy conversion process.

The second law of thermodynamics states that in any closed system, the total entropy (a measure of energy dispersal or disorder) always increases or remains constant. This means that when converting heat energy to mechanical energy, some of the heat energy will always be lost as waste heat, resulting in a decrease in the efficiency of the conversion process.

Efficiency is defined as the ratio of useful work or mechanical energy output to the total energy input. Due to the inherent limitations imposed by the laws of thermodynamics, the efficiency of converting heat energy to mechanical energy is always less than 100%. Therefore, it is not possible to completely convert heat energy into mechanical energy without any energy loss.

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