a change in phase thermal expansion an increase in entropy mechanical advantage
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- a change in phase
- thermal expansion
- an increase in entropy
- mechanical advantage

an increase in entropy