You are trying to overhear a juicy conversation, but from your distance of 20.0 m, it...
You are trying to overhear a juicy conversation, but from your distance of 20.0 m, it sounds like only an average whisper of 25.0 dB. So you decide to move closer to give the conversation a sound level of 65.0 dB instead. How close should you come? Express your answer in centimeters.
Homework Answers
Here,
for the distance
let the distance is d
do = 20 m
as Ifinal = Iinitial - 20 * log(d/do)
65 = 25 - 20 * log(d/20)
solving for d
d = 1/5 m = 0.20 m = 20 cm
the distance shall be 20 cm
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