Concept explainers
One sound has an intensity level of 75.0 dB, while a second has an intensity level of 72.0 dB. What is the intensity level when the two sounds are combined?
The intensity level of the sound if one sound with the intensity level of
Answer to Problem 56SP
Solution:
Explanation of Solution
Given data:
The intensity level of the first sound is
The intensity level of the second sound is
Formula used:
The expression for theintensity level of sound is written as
Here,
The standard intensity of the sound is
Explanation:
Write the expression for the intensity level of the first sound:
Here,
Substitute
Write the expression for the intensity level of thesecond sound:
Here,
Substitute
Write the expression for total intensity for the combination of both intensities:
Substitute
Again, write the expression for intensity level of sound for the combination as
Here,
Substitute
Conclusion:
Therefore, the intensity level of sound when the given two sounds are combined is
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Chapter 23 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
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