Week of 9/11

For Monday no students came for office hours. On Friday, two students came for homework help because there homework was due in 50 minutes. :) We went over the carnot engine and what equations correspond with that versus a carnot refrigerator. They were having trouble with identifying the sign of Work, heat, and internal energy based on a graph that was given. I think that may be a topic that needs to be went over more in class or explained more for the students to understand it better.