Two People Are Talking at a Distance of 3

Multiple Choice

Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 × 10^-7 W/m². Another student is 4.0 m away from the talkers. What sound intensity does the other student measure? Assume that the sound spreads out uniformly and undergoes no significant reflections or absorption.

A) 6.2 × 10-8 W/m²
B) 1.5 × 10-7 W/m²
C) 8.3 × 10-8 W/m²
D) 7.8 × 10-7 W/m²
E) 2.5 × 10-8 W/m²