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Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers.

Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers. Suppose a siren produces a sound that has an intensity level of 120 dB at a distance of 2.0 m. Treating the siren as a point source of sound, and ignoring reflections and absorption, find the intensity level heard by an observer at a distance of

(a) 12 m

(b) 21 m from the siren.

(c) How far away can the siren be heard?

Apr 01 2020 Read more Less More

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