Answer to Question #276149 in Physics for Kai

Question

The intensity of sound heard by Jonathan when his headphones is “on” his ear is around \ (3.6x10^-4 W/m² \). Assuming the initial distance is around 4.6cmwhen the headphone is on his ear, what is the intensity when he removes the headset, and is a distance 7.4cm from his ear?

Note: Use this notation in writing units with exponents that are more than one: s² = s2

Answer 1

$I=\frac{4.6^2}{7.4^2}3.6\cdot10^{-4}=1.4\cdot10^{-4}\frac{W}{m^2}$