Question

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?

Answer 1

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