Question: The engine that powers a crane burns fuel at a flame temperature of 2000C. It is cooled by 20C air. The crane lifts a 2000

The engine that powers a crane burns fuel at a flame temperature of 2000°C. It is cooled by 20°C air. The crane lifts a 2000 kg steel girder 30 m upward. How much heat energy is transferred to the engine by burning fuel if the engine is 40% as efficient as a Carnot engine?

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