Homework Answers
Q = 370 J
Th = 145 deg C ; eta = 24%
D)The netropy of the world changes by "zero"
delta S = 0 J/K
Since, Carnot cycle has reversible process.
E)we need to find W for this.
eta = W/Q
W = eta x Q = 0.24 x 370 = 88.8 J
PE = W
m g h = 88.8
m = 88.8/g h = 88.8/9.8 x 25 = 0.362 kg
Hence, m = 0.362 kg.
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