Question: A Carnot engine whose high-temperature reservoir is at 620 K takes in 550 J of heat at this temperature in each cycle and gives up

A Carnot engine whose high-temperature reservoir is at 620 K takes in 550 J of heat at this temperature in each cycle and gives up 335 J to the low-temperature reservoir.
(a) How much mechanical work does the engine perform during each cycle?
(b) What is the temperature of the low-temperature reservoir?
(c) What is the thermal efficiency of the cycle?

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