Question

If a sound wave has a specific intensity of 6 μW/m^2 and propagates symmetrically over a spherical radius of 4 m, what is the power of the sound wave?

Answer 1

\[I=\frac{ P }{ 4 \pi r^2 }\] Plug in 4 for r and 6 for I. Solve for P.

Answer 2

So the answer would be 1,205.76?

Answer 3

@bmk614

Answer 4

6=P/4(3.14)(16)
6=P/200.96
6 x 200.96=P
1,205.76=P

Answer 5

Yes. That is what I got!

Answer 6

Perfect, thank you so much for all of your help!

Answer 7

What would the label be for that though? 1,205.76 μW?

Answer 8

Yes! That is correct!