Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 15, Problem 61P
(a)
To determine
To calculate:
The distance from the source which results into the intensity level
(b)
To determine
To calculate:
The radiated power by the spherical source.
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A spherical source radiates sound uniformly in all directions. At a distance of 20 m, the sound intensity level is 120 dB.
(a) At what distance from the source is the intensity level 50 dB? (b) What power is radiated by this source?
A sound wave radiates from a speaker in all directions. If the power of the sound source is 200 W, calculate the intensity level in dB of the sound wave 1 km from the speaker.
Hint: Presume that the sound waves spread as a sphere (not a hemisphere).
Chapter 15 Solutions
Physics for Scientists and Engineers
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- If a sound intensity level of 0 dB at 1000 Hz corresponds to a maximum gauge pressure (sound amplitude) of 10-9 atm , what is the maximum gauge pressure in a 60-dB sound? What is the maximum gauge pressure in a 120-dB sound?arrow_forwardWhat frequency is received by a mouse just before being dispatched by a hawk flying at it at 25.0 m/s and emitting a screech of frequency 3500 Hz? Take the speed of sound to be 331 m/s.arrow_forwardCheck Your Understanding Identify common sounds at the levels of 10 dB, 50 dB, and 100 dB.arrow_forward
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