Approximately a third of people with normal hearing have ears that continuously emit a low-intensity sound outward through the ear canal. A person with such spontaneous otoacoustic emission is rarely aware of the sound, except perhaps in a noise-free environment, but occasionally the emission is loud enough to be heard by someone else nearby. In one observation, the sound wave had a frequency of 1200 Hz and a pressure amplitude of 2.50 xx 10^(-3) Pa. What were (a) the displacement amplitude and (b) the intensity of the wave emitted by the ear?

Approximately a third of people with normal hearing have ears that con

1.	Approximately a third of people with normal hearing have ears that continuously emit a low-intensity sound outward through the ear canal. A person with such spontaneous otoacoustic emission is rarely aware of the sound, except perhaps in a noise-free environment, but occasionally the emission is loud enough to be heard by someone else nearby. In one observation, the sound wave had a frequency of 1200 Hz and a pressure amplitude of 2.50 xx 10^(-3) Pa. What were (a) the displacement amplitude and (b) the intensity of the wave emitted by the ear?
Answer» SOLUTION :`(a) 7.99 xx 10^(-10) m ~~ 0.80 NM, (b) 7.5 n W//m^2`

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