An engine absorbs 169 kj from a hot reservoir at 277 degc, Ask an Expert

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An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle.

(a) What is the engine's efficiency?

(b) How much work is done by the engine in each cycle?

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