A point source emits sound waves with a power output of 100 watts. What is the sound level (in dB) at a distance of 10 m

Explanation:

Given

Power, P = 100 W

Distance, d = 10 m

Required

Determine the Sound Level

First, the sound intensity as to be calculated; This is done, as follows;

Substitute for P, d and take π as 3.14

--- Approximated

Next is to calculate the Sound Level, as follows

Where

Substitute for I and Io

Hence, the sound level is 109.01 decibels

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