Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-energy-f7a2e3be51a1

According to the second law of thermodynamics, what happens in a heat engine cycle?

Some energy is lost as waste heat.

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  1. No energy changes form
  2. All heat becomes work
  3. Some energy is lost as waste heat ✔

Why: In practical cyclic heat engines, some energy is always lost as waste heat. This limits how much heat can become work.

Huh, didn't know that: In practical cyclic heat engines, some energy is always lost as waste heat. This limits how much heat can become work.

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That law is a real heat-stealer!
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References

Answer: Some energy is lost as waste heat. In practical cyclic heat engines, some energy is always lost as waste heat. This limits how much heat can become work.

  1. Energy en.wikipedia.org/wiki/Energy
    the system doing work always loses some energy as waste heat
    Checked 2026-11-07.

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