Approximately a third of people with normal hearing have ears that continuously emit a low-intensity sounded 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 1.665 Hz and a pressure amplitude of 1.13 x 10-3 Pa. What were?

(a) The displacement amplitude and

(b) The intensity of the wave emitted by the ear?