I need some help with the following question. Anexplanation so I can really unde

Question

I need some help with the following question. Anexplanation so I can really understand it would be greatlyappreciated! 200 J enters a Carnot engine from the hot reservoir, held at400 K. During the entire cycle, 50 J of useful work isperformed by the engine. What is the temperature of the coldreservoir? thanks I need some help with the following question. Anexplanation so I can really understand it would be greatlyappreciated! 200 J enters a Carnot engine from the hot reservoir, held at400 K. During the entire cycle, 50 J of useful work isperformed by the engine. What is the temperature of the coldreservoir? thanks

Explanation / Answer

  We know that the efficiency of the carnot engineis given by       e = W/Q = 1 - T2 /T1       T2 / T1 = 1 -W/Q      therefore T2 = ( Q-W / Q )T1 = ( 200 -50 /200 ) (400K) = 300 K

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