A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz.
Question:
(a) Upwind of the siren and
(b) Downwind of the siren. Firefighters are approaching the siren from various directions at 15.0 m/s. What frequency does a firefighter hear?
(c) If he or she is approaching from an upwind position, so that he or she is moving in the direction in which the wind is blowing?
(d) If he or she is approaching from a downwind position and moving against the wind?
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a b c d Sound moves upwind with speed 34315 ms Cres...View the full answer
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