# Solution: A human can only hear sound above I 0 = 10 -12 W/m2, called the threashold of hearing. If a 100 W speaker emits sound at 500 Hz, what is the furthest distance from the source you could stand and still hear the sound emitted? What would be the furthest distance if the speaker's tune was changed, and now emits a sound at 100 Hz?

###### Problem

A human can only hear sound above I 0 = 10 -12 W/m2, called the threashold of hearing. If a 100 W speaker emits sound at 500 Hz, what is the furthest distance from the source you could stand and still hear the sound emitted? What would be the furthest distance if the speaker's tune was changed, and now emits a sound at 100 Hz?
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