Question: A heat engine takes in 125 kJ of heat from a reservoir at 815 K and exhausts 82 kJ to a reservoir at 293 K.

A heat engine takes in 125 kJ of heat from a reservoir at 815 K and exhausts 82 kJ to a reservoir at 293 K.
(a) What is the efficiency of the engine?
(b) What is the efficiency of an ideal engine operating between the same two reservoirs?

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