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A refrigerator has a coefficient of performance of K=2.1. Each cycle, it absorbs 3.45×104 J of...

A refrigerator has a coefficient of performance of K=2.1. Each cycle, it absorbs 3.45×104 J of heat from the cold reservoir. The refrigerator is driven by a Carnot engine that has an efficiency of e=0.5.

1.During each cycle, how much heat flows into the Carnot engine?
Express your answer in joules to three significant figures.

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