Physics: Principles with Applications (7th Edition)

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

Chapter 22 - Electromagnetic Waves - Misconceptual Questions: 3

Answer

All those listed are correct except for ultrasonic waves (Choice D).

Work Step by Step

All electromagnetic waves travel at the same speed in vacuum, 299792458 m/s. An ultrasonic wave is a sound (sonic) wave and travels much slower, at the speed of sound.
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