A reversible engine working between two reservoirs at
Chapter , Problem 43(choose chapter or problem)
A reversible engine working between two reservoirs at temperatures and has an efficiency of 30 percent. Working as a heat engine, it releases 140 J per cycle of heat to the cold reservoir. A second engine working between the same two reservoirs also releases 140 J per cycle to the cold reservoir. Show that if the second engine has an efficiency greater than 30 percent, the two engines working together would violate the heat-engine statement of the second law.
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