Chapter 21, Problem 40AP

You are working as an assistant to a physics professor. She has seen some presentations you have made to your classes and is aware of your expertise in preparing presentation slides. Her laptop has crashed and she cannot access the presentation slides she needs for her lecture coming up in one hour. Her lecture is on entropy in engine cycles. She asks you to quickly generate two slides on your laptop, both showing TS diagrams, (a) one for the Carnot cycle and (b) one for the Otto cycle. As she leaves, you think, “Uh-oh. What’s a TS diagram?” Quick, you have no time to waste! Get to work!