College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A LaGuardia Physics Professor is in the front row at a concert of Grateful Dead rock band, he is 4.2 meters
away from the speaker. If the professor hears the sound at a level of B₁ = 131 dB, what is the intensity of
the sound at this distance?
The intensity of the sound, 1₁
=
1.2589254✓✔ Units W/m^2
What will be the intensity of the sound if the professor walks 33.7 m away from the speaker? What will be
the intensity level at this distance?
=
The intensity of the sound, 12
0.1953387✔ Units W/m^2
The corresponding intensity level, B₂:
=
112.907
Units dB
How far from the speaker should the professor go to reduce the should level to 75 dB?
The distance, d = 3.1622776 x Units km
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Transcribed Image Text:A LaGuardia Physics Professor is in the front row at a concert of Grateful Dead rock band, he is 4.2 meters away from the speaker. If the professor hears the sound at a level of B₁ = 131 dB, what is the intensity of the sound at this distance? The intensity of the sound, 1₁ = 1.2589254✓✔ Units W/m^2 What will be the intensity of the sound if the professor walks 33.7 m away from the speaker? What will be the intensity level at this distance? = The intensity of the sound, 12 0.1953387✔ Units W/m^2 The corresponding intensity level, B₂: = 112.907 Units dB How far from the speaker should the professor go to reduce the should level to 75 dB? The distance, d = 3.1622776 x Units km
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