Homework Help: Equation for Sound wave power.

1. May 7, 2006

Werg22

Was the formula tha links power and frequency (a formula that dosen't include intensity)?

2. May 7, 2006

KingNothing

Wouldn't it just be the amplitude of the wave?

3. May 8, 2006

FredGarvin

Power from a spherical source, is defined, in the far field as:

$$\Pi = \frac{4 \pi r^2 p^2_{rms}}{\rho_o c}$$

4. Jul 30, 2010

ljde

How do you derive this equation? Thanks