written Question #1 For the heat engines and the heat pumps below fill in possib
ID: 1770490 • Letter: W
Question
written Question #1 For the heat engines and the heat pumps below fill in possible values for the heat and work values such that the conditions given are met. You Must Explain your answers for full points. (a.) A heat engine that viloates the first law of thermodynamics. (b.) A heat engine that obeys the first law of thermodynamics but violates the second law of thermodynamics. 500 K 500 K QH Wout Qc Qc 300 K 300 K Qa = 100 J Qa = 100 J Wout = Wout = (c.) A heat pump that viloates the first law of thermodynamics. (d.) A heat pump that obeys the first law of thermodynamics but violates the second law of thermodynamics. 500 K 500 K QH 300 K 300 K Qa= 100 J Q11-100J Win = Win =Explanation / Answer
(a) Qc = 20 J , W = 50 J
The energy is not conserved. Hence, first law is violated
(b) Qc = 50 , W = 50 J
This violates second law, because efficiency is greater than carnot efficiency.
(c) Qc = 100 J , W = 80 J
Energy is not conserved
(d) Qc = 80J, W =20J
This violates second law because, coefficient of performance is greater than carnot's efficiency
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