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A heat engine takes in 2000 J of heat from a hi... - SS2 Physics Heat and Thermodynamics Question

A heat engine takes in 2000 J of heat from a high-temperature reservoir and produces 800 J of work. How much heat is rejected to the low-temperature reservoir?

According to the first law of thermodynamics, the heat input to a heat engine is equal to the sum of the work done and the heat rejected. Therefore, the heat rejected to the low-temperature reservoir is 2000 J - 800 J = 1200 J.

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