Conceptual Physics (12th Edition)

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

Chapter 21 - Reading Check Questions (Comprehension): 8

Answer

Loudness.

Work Step by Step

Loudness is a physiological sensation, and is more subjective than sound intensity. Some sounds appear to be "louder" because we are more sensitive to their frequencies, even though the waves might have the same intensity as others. This is discussed on page 394.
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