A point source emits 32.0 W of sound isotropically. A small microphone intercepts the sound in an area of 0.560 cm2, 205 m from the source. What is the sound intensity at that distance?
= 6.06×10-5 W/m^2
What is the power intercepted by the microphone?
The Attempt at a Solution
Got the answer for part A, no I am stuck on part B...erg.
I figured, well i found the intesnity at 250m so;
I=P/A .. therefore,
= 3.00 * 10^-9 W... but this was wrong. No idea what I am doing wrong here.
These are the only questions i can't get on a long assignment... frustated.