Conceptual Physics (12th Edition)

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

Chapter 22 - Think and Explain - Page 427-428: 56


See below.

Work Step by Step

The thin foil leaves become charged from electrons traveling up or down from the metal ball. The foil leaves then spread apart as shown, because they have the same type of charge, and like charges repel each other.
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