Concept explainers
(a)
The pressure amplitude of sound wave.
(a)
Answer to Problem 15P
The pressure amplitude is
Explanation of Solution
The intensity level of air is
Write the equation for sound intensity levels in bels.
Here,
Rewrite the above relation in terms of
Write the relation between
Here,
Conclusion:
Substitute
Substitute
Therefore, the pressure amplitude is
(b)
The force exerted by air on eardrum.
(b)
Answer to Problem 15P
The force is
Explanation of Solution
The intensity level of air is
Write the equation to find the force exerted by air on eardrum.
Here,
Conclusion:
Substitute
Therefore, the force is
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