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ARC-Easy / Mercury_7182963 / When Dennis operates his lawnmower, he notices the engine makes a lot of noise.…

Problem

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question

When Dennis operates his lawnmower, he notices the engine makes a lot of noise. He also notices that the engine gets very hot. Which best describes the heat and noise generated from the lawnmower?

choices

  • a change in phase
  • thermal expansion
  • an increase in entropy
  • mechanical advantage

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