Conceptual Physics (12th Edition)

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

Chapter 20 - Reading Check Questions (Comprehension): 4


Infrasonic sound has frequencies less than 20 hertz, lower than the range of human hearing. Ultrasonic sound has frequencies greater than 20,000 hertz, higher than the range of human hearing.

Work Step by Step

This is discussed on page 376.
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