## Conceptual Physics (12th Edition)

Published by Addison-Wesley

# Chapter 10 - Think and Explain: 55

Farther.

#### Work Step by Step

Kepler's third law states that the period squared is directly proportional to the average radial distance cubed. If a planet's period is longer than Earth's year, its average radial distance from the sun must be greater than Earth's separation from the sun, i.e., it is farther from the sun. This is discussed on page 196.

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