Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 11 - Oscillations and Waves - Questions: 12

Answer

The speed of a transverse wave is its movement parallel the string, whereas the speed of a piece of the string is a measure of its movement perpendicular to the string.

Work Step by Step

The speed of a transverse wave in a string measures how fast the wave disturbance travels along (parallel to) the string. This is constant, and as shown in equation 11-13, depends on the tension in the string and the linear mass density. On the other hand, the speed of a tiny piece of the string measures how fast the string element moves perpendicular to the string as the wave passes by. This is not constant: over time, each piece of string moves in simple harmonic motion (shown by equation 11–9).
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