- #1

sonutulsiani

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## Homework Statement

A spherical sinusoidal source radiates sound uniformly in all directions. At a distance 10.0m the sound intensity level is 1.00 × 10−4 W/m2.

1. At what distance from the source is the intensity 1.00 × 10−6 W/m2?

A. 1 m

B. 10 m

C. 100 m

D. 1 km

2. What is the power radiated by this source?

A. Pav = 208 mW

B. Pav = 126 mW

C. Pav = 332 mW

D. Pav = 412 mW

## Homework Equations

## The Attempt at a Solution

I got 1 as 100 m and 2 as 126 watt, but I am not sure about the 2nd answer. So please help me. Thanks