How to find energy output of a wave over the course of one hour.

[rzlblrt417]

Homework Statement

given the:
Intensity = .026 W/m^2
Distance = 4.3m

How much sound energy does the source emit in one our if its power output remains constant

Homework Equations

Pmax = sqrt ( uF(w^2)(A^2))

The Attempt at a Solution

I don't even know where to start and that is the only relevant equation that i can think. Any help would be appreciated.

 

[berkeman]

Homework Statement

given the:
Intensity = .026 W/m^2
Distance = 4.3m

How much sound energy does the source emit in one our if its power output remains constant

Homework Equations

Pmax = sqrt ( uF(w^2)(A^2))

The Attempt at a Solution

I don't even know where to start and that is the only relevant equation that i can think. Any help would be appreciated.

I'm not able to decipher that equation.

You are given the Power/Area for a sphere of the given radius. What is the surface area of that sphere? What does that give you for the total power being emitted by the source?

Then use the fact that Power = Energy/Time to calculate how much energy per hour will be emitted by the source. Be sure to carry units along in your calculation, because you are going to have to convert between seconds and hours at one point...