Question

Victor is standing next to a 100 W speaker at a distance of 0.5 meters. What is the intensity of

sound reaching his ear?

Pls help

Answer 1

31.8 W/m^2

Step-by-step explanation:

r = 0.5 m

P = 100 W

intensity =
`(P)/(4\pi r^2)=(100)/(4\pi 0.5^2)=31.8 W/m^2`