# physics - sound level

posted by
**COFFEE**
.

The source of a sound wave has a power of 2.50 µW. Assume it is a point source.

(a) What is the intensity 6.70 m away?

I used I = Power / 4*pi*r^2 and found I to be 4.43x10^-9 W/m^2

(b) What is the sound level at that distance?

Sound level = 10 dB*log [(Intensity)/(Intensity Initial)]

How do I find Intensity Initial in order to calculate the sound level?

Thanks!

Never mind, I got it. Thanks!