🤓 Based on our data, we think this question is relevant for Professor Zhang's class at MIZZOU.
An engineer claims to have built four engines. When operating between two reservoirs at 400 K and 300 K, the engines have the following characteristics:
1) QH = 200 J, QC = -175 J, and W = 40 J
2) QH = 500 J, QC = -200 J, and W = 400 J
3) QH = 600 J, QC = -200 J, and W = 400 J
4) QH = 100 J, QC = -90 J, and W = 10 J
Do any of these engines violate either the first or the second law of thermodynamics?
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Based on our data, we think this problem is relevant for Professor Zhang's class at MIZZOU.