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A heat engine is operating on a Carnot cycle

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A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60 °F at a rate of 800 Btu/min. Determine
a) the power output of the engine and
b) the temperature of the source.

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a. The thermal efficiency of Carnot heat engine ...

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