(III) Suppose a gas is taken clockwise around the rectangular cycle shown in Fig. 19-32, starting at b, then to a, to d, to c, and returning to b. Using the values given in Problem 39, (a) describe each leg of the process, and then calculate (b) the net work done during the cycle, (c) the total internal energy change during the cycle, and (d) the net heal flow during the cycle, (e) What percentage of the intake heat was turned into usable work: i.e., how efficient is this “rectangular” cycle (give as a percentage)?
FIGURE 19-32
Problems 38, 39, and 40.
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