Why can't the efficiency of a heat engine be 100%?

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20-10-2016
Physics

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Why can't the efficiency of a heat engine be 100%?

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Manny966 Manny966 · Answer 1 · 2016-10-20T01:19:54-04:00

Manny966 Manny966

20-10-2016

The efficiency can never be 100 because some of the work will be transferred into thermal energy. In turn, causing the percentage to decrease. This is basically the second law of thermodynamics.

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