Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 15 - Think and Discuss: 100


The 2 heated brass balls have the same diameter.

Work Step by Step

When the balls are heated, the material expands uniformly, as though a 3D picture of them were enlarged on a magical photocopier. Their outer circumferences both expand by the same factor. Another way to think about this is that the size of the hole in the hollow brass ball will expand precisely as much as a brass sphere that fills the hole.
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