Intensity of Sound: 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. Calculate a reasonable estimate for the sound intensity that the other student measures.
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
Answer: A
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