- #1

Student3.41

- 71

- 0

## Homework Statement

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?

## Homework Equations

## The Attempt at a Solution

Got the answer for part A, no im stuck on part B............erg.

I figured, well i found the intesnity at 250m so;

I=P/A .. therefore,

P=I*A

= (6.06*10^-5)(0.000056m^2)

= 3.00 * 10^-9 W..... but this was wrong. No idea what im doing wrong here.

These are the only questions i can't get on a long assignment... frustated.