Physics, 30.11.2020 21:40 Crxymia

Which object is most efficient? a. A heat engine that produces 30 J of work for 60 J of input energy.
b. A heat engine that produces 15 J of work for 30 J of input energy.
c. A heat engine that produces 20 J of work for 60 J of input energy.
d. A heat engine that produces 40 J of work for 50 J of input energy.

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