Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 db (relative to the threshold of human hearing) for a period of 9.00 hours. an eardrum has an area of 1.56 x 10^-4 m^2. how much sound energy is incident on the eardrum during this time?

Explanation:

It is given that,

Sound intensity level,

Area of eardrum,

Time taken, t = 9 hours = 32400 s

Sound intensity level is given by :

Sound intensity is given by :

And P = E/t

E = 0.00505 Joules

or

So, the incident energy on the eardrum during this time is . Hence, this is the required solution.

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