University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 21 - Electric Charge and Electric Field - Problems - Discussion Questions - Page 713: Q21.20


The nucleus is stable.

Work Step by Step

The protons in the nucleus repel one another electrically, while the neutrons have no electrical force on them. The gravitational attraction between elementary particles is much, much weaker than the electrical forces, as shown in Example 21.1. The nucleus doesn’t blow itself apart, so there must be some other force holding the protons and neutrons together. This fundamental, short-range interaction is known as the strong force.
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