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According to the _____ law of thermodynamics, energy is never 100% efficient because _____.

User BerndBrot
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second; some of the energy disperses as heat
User Ahamed Moosa
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Answer: The correct answer for the fill in the blank is 1) Second law and 2) Because of the loss of energy in the form of heat or other form.

According to the Kelvin- Planck statement of second law of thermodynamics, it is not possible for a heat engine ( that operates in a cycle) to convert the absorbed heat completely into work.

This indicates that energy is never 100% efficient.

User Alexey Novakov
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