Halliday, Resnick & Walker — Temperature, Heat, and the First Law of Thermodynamics: Problem 47

When a system is taken from state \(i\) to state \(f\) along path \(iaf\) in Fig. 18.17, \(Q = 50 \text{ cal}\) and \(W = 20 \text{ cal}\). Along path \(ibf\), \(Q = 36 \text{ cal}\). (a) What is \(W\) along path \(ibf\)? (b) If \(W = -13 \text{ cal}\) for the return path \(fi\), what is \(Q\) for this path? (c) If \(E_{int,i} = 10 \text{ cal}\), what is \(E_{int,f}\)? If \(E_{int,b} = 22 \text{ cal}\), what is \(Q\) for (d) path \(ib\) and (e) path \(bf\)?