Exam-style question
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What happens to energy in a mechanical system when it is dissipated as heat?.
- A.Energy is lost from the system and cannot be recovered.
- B.Energy is transformed into kinetic energy.
- C.Energy is stored as potential energy.
- D.Energy is converted into sound energy.
Model answer
What a good answer should say
- Energy is lost from the system and cannot be recovered.
Explanation
Why this works
In real mechanical systems, energy dissipation occurs when energy is transformed into forms that are not useful for doing work, such as heat. This energy is considered lost to the system and cannot be recovered for useful work.
Common mistake
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