# Modern Physics - Energy of sound waves absorbed by eardrum

A 54 dB sound wave strikes an eardrum whose area is 4.0 x 10-5 m^2.

(a) How much energy (in watts) is absorbed by the eardrum per second?

(b) At this rate, how long (in years) would it take your eardrum to receive a total energy of 1.0 J?

© BrainMass Inc. brainmass.com June 3, 2020, 10:17 pm ad1c9bdddfhttps://brainmass.com/physics/energy/finding-amount-energy-absorbed-eardrum-224001

#### Solution Preview

(a) The value D of the sound intensity level I is given in decibels by

D = 10 * log (base 10) [I/I_0],

where I_0 = (10^-12) W/(m^2), which is ...

#### Solution Summary

A complete, step-by-step solution on how to find the amount of energy absorbed by the eardrum per second.

$2.19