## College Physics (4th Edition)

Published by McGraw-Hill Education

# Chapter 13 - Multiple-Choice Questions - Page 496: 9

#### Answer

The correct answer is: (c) temperature only

#### Work Step by Step

We can write an expression for the average kinetic energy: $\overline{KE} = \frac{3}{2}~\frac{PV}{N}$ $\overline{KE} = \frac{3}{2}~kT$ The average kinetic energy can not be found from pressure only, or from number of molecules only. However, since the value of $k$ is a constant, the average kinetic energy can be found from temperature only. The correct answer is: (c) temperature only

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