University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 16 - Sound and Hearing - Problems - Discussion Questions - Page 537: Q16.8


a. No. b. Yes. c. Yes. d. No.

Work Step by Step

a. A sound level of zero dB corresponds to the threshold of hearing at 1000 Hz; there is still sound. b. Equation 16.15 makes sense for negative sound levels. A negative sound level can be assigned to a sound that is weaker (i.e., has less intensity) than a sound with a sound level of 0 dB. c. If there is zero intensity, the displacement amplitude is zero, and there is no sound. d. One cannot have less sound than no sound.
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