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A dragster produces a large sound as it races down the track. If the power of this sound wave is 1,200 watts, what is the intensity of the sound heard by the spectators who are 20 meters from the dragster?
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19 votes
A dragster produces a large sound as it races down the track. If the

power of this sound wave is 1,200 watts, what is the intensity of the
sound heard by the spectators who are 20 meters from the dragster?

User JayIsTooCommon
by
6.1k points

1 Answer

9 votes
Intensity of sound= Power/Area
Area= m2= 20m * 20 m= 400 m2
I= 1200W/400 m2
I= 3 dB
User SpitFire
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