Conceptual Physics (12th Edition)

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

Chapter 20 - Think and Solve: 36

Answer

The cave wall is 17 m away.

Work Step by Step

During the 0.1 second time interval, the sound pulse went to the wall, and back. The sound reached the wall in 0.05 seconds. $$d = speed \times time = 340 \frac{m}{s} \times (0.05 s) = 17 m$$
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