rmodynamics final exam

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The heat engine shown receives $1\mathrm{.}0MW$ heat from a high temperature source at $500C$ and rejects heat to the surroundings at $30C.$ The output power from the engine is $500kW.$ Find

$1-$ The amount of heat dissipated to the surroundings

$2-$ The heat engine efficiency

$3-$ Compare your answers above to a Carnot heat engine operating between the same two reservoirsb