Warm-Up Exercise 7

Due 12:15 pm, Wed 12 Sep 2012

Physics 123, Fall 2012

Reading assignment: 20.7

If the temperature of a "black body" doubles, how much does its rate of energy emission change?

To decrease the energy lost by conduction from a hot object to a cold one, what can you change?

Why do you think there are no equations in the "convection" section of the book?