Question

The eardrum is a membrane located in the middle ear that vibrates when sound waves hit it. Assume an eardrum has an area of 5.06 ✕ 10−5 m2.

(a) Calculate the average sound power (in W) incident on an eardrum at the threshold of pain, which corresponds to an intensity of 1.00 W/m2. W

(b) How much energy (in J) is transferred to the eardrum exposed to this sound for 4.45 min? J

Answer 1

Use the intensity and area of the eardrum to find the required incident power as shown below.

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