An engine from a quarry vehicle used in the Build a Beach program of DEMR has a power requirement of 560 kW. Per hour of its operation, it ejects 234 MJ into its surroundings at 50 °C. If it behaves like a Carnot engine, answer the questions below. a. How much work (MJ) is done by the engine per hour? b. What is the efficiency (%) of the engine? c. What is the temperature (°C) of the hot reservoir?

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