PHY 121 Week 10

  Main Objectives:
Be able to explain why evaporation is a cooling method
Be able to explain energy changes associated with changes of state
Be able to explain what conduction is and what properties of the material involved it depends on
Be able to explain why double pane glass or storm windows reduces heat loss from houses
Know what R-value is and how to use it to choose insulating materials
Be able to explain what convection is and  how heat loss due to convection can be prevented
Be able to state the three laws of thermodynamics
Be able to give a general description of what a heat engine does and explain what we mean when we say a refrigerator is a heat engine operating in reverse
Be able calculate efficiencies of heat engines
Be able to explain what thermal pollution is and how it is connected to the second law of thermodynamics
Be able to describe the three methods power plants use to dispose of heat that are discussed in the textbook
Be able to discuss the advantages and disadvantages of each method
Monday Finish discussion of the kinetic theory of gases and discuss various methods of heat transport.

Outside of class:  Read Ch. 8 pages 201-211 and 218-221.   Complete homework questions: 15, 40, 41, 42, and 55.
Wednesday Discuss the second law of thermodynamics, efficiencies of heat engines, and  implications of these for the environment.

Outside of class: Go over Chapter 8 review questions if you haven't already done so. Complete homework questions:  26, 28, 32, 33, 38, 39 and 61. 

Friday Complete anything we didn't get to on Wednesday and review for Monday's exam.  (Students should be prepared to ask questions on Chapter 8)

Outside of class:    Prepare for Exam III.