Concept explainers
To find: the percent decrease in the intensity of the noise as a result of the installation of these materials.
Answer to Problem 49E
Explanation of Solution
Given:
The number of decibels
Where
Also, it is given that due to the installation of noise suppression materials, the noise level in an auditorium decreased from 93 to 80 decibels
Formula used:
1.
2.
First find the intensity
Substitute
Changing the above expression into exponential form,
Now find the intensity
Substitute
Changing the above expression into exponential form,
The percent decrease in the intensity of the noise is:
Chapter 3 Solutions
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