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Physics18. Waves & SoundSound Intensity

Multiple Choice

A 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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