Question: An engine takes 3 , 0 0 0 J from a hot reservoir and expels 2 , 4 0 0 J to a cold reservoir.

An engine takes 3,000J from a hot reservoir and expels 2,400J to a cold reservoir. What is the thermal efficiency of the engine?
A.20%
B.45%
C.60%
D.80%
An engine takes 3 , 0 0 0 J from a hot reservoir

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