Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 16 - Traveling Waves - Conceptual Questions: 4

Answer

(a) The wave is traveling in the positive x-direction. (b) $v = 2~m/s$

Work Step by Step

(a) At t = 0.01 s, the middle of the wave pulse is at the position x = -4 cm. At t = 0.04 s, the middle of the wave pulse is at the position x = 2 cm. Therefore, the wave is traveling in the positive x-direction. (b) We can find the speed of the wave. $v = \frac{\Delta x}{\Delta t}$ $v = \frac{2~cm-(-4~cm)}{0.04~s-0.01~s}$ $v = \frac{6~cm}{0.03~s}$ $v = 200~cm/s = 2~m/s$
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