Warm-Up Exercise 6

Due 12:15 pm, Mon 10 Sep 2012

Physics 123, Fall 2012

Reading assignment: 21.5,21.6,20.1-20.3

Section 21.5 talks about three different velocities of particles in a gas. Explain in your own words what the difference is between the three. Why is vmp the smallest of the three velocities?

In terms that a lay person could easily understand, explain what heat capacity is. Explain the difference between "heat capacity" and "specific heat". Why do we need both?

This image from the text shows the temperature of water as a function of energy added. In region B and D, energy is being added but the temperature is constant. How can energy be added to a system and the temperature not change? Where is the energy going?