18. Waves & Sound
Wave Intensity
Multiple Choice
Multiple ChoiceA sound source radiates sound waves in all directions. At a distance of 4 m from the source, you measure the wave intensity to be 0.06 W/m2. How much sound energy does the source emit in 1 hour if the power output is constant?
A
724 J
B
10,860 J
C
1.07 J
D
43,400 J
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