In each cycle of its operation, a heat engine expels 3,000 J of energy and performs 2,000 J of mechanical work.
(a) How much the

Question

In each cycle of its operation, a heat engine expels 3,000 J of energy and performs 2,000 J of mechanical work. 
(a) How much thermal energy must be added to the engine in each cycle?  
(b) Find the thermal efficiency of the engine.

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In each cycle of its operation, a heat engine expels 3,000 J of energy and performs 2,000 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle? J (b) Find the thermal efficiency of the engine. % Need Help? Read It