18. Waves & Sound
Sound Intensity
Multiple Choice
Multiple ChoiceA source emits sound spherically with a power of 2.2 × 104 W. What is the minimum distance away from this sound that would be considered safe (a volume of 150 dB or less)?
A
1.3×10−5 m
B
0.13 m
C
1.3 m
D
1300 m
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