A siren mounted on the roof of a firehouse emits sound at a frequency of 900...

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Answer 1

Answer #1

The frequency heard by the fire fighter is given by

$f'=\left ( \frac{v+v_{o}}{v-v_{s}} \right )f=\left ( \frac{340+0}{340-15} \right )\times900$

f'=941.5 Hz

Answer 2

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