Concept explainers
The intensity level heard at
Answer to Problem 56E
The intensity level heard at
Explanation of Solution
Write the expression for intensity level of sound.
Here,
Given that the intensity level of sound is
Apply the above condition in equation (I), and rearrange to find
Since the lowest audible intensity is equal to
Write the relation between acoustic power in terms of intensity.
Here,
Since the intensity of sound at
Use the above condition in equation (III).
Write the acoustic power at
Here,
Rearrange the above equation to find
Since the acoustic power at
Write the expression for intensity level of sound at a distance of
Here,
Conclusion:
Substitute
Therefore, the intensity level heard at
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Chapter 22 Solutions
General Physics, 2nd Edition
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