Question: | | A battery - powered siren emits 0 . 5 0 W of sound power at 1 0 0 0 Hz . It is

|| A battery-powered siren emits 0.50 W of sound power at
1000 Hz. It is dropped from 100 m directly over your head on
a 20C day. 4.0 s after it is released, what are (a) the frequency
and (b) the sound intensity level you hear?

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