Conceptual Physics (12th Edition)

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

Chapter 4 - Think and Rank: 55

Answer

C, B, A.

Work Step by Step

The boxes are in equilibrium, so the frictional force equals the horizontal push force. This is discussed on pages 59-60.
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