A find the wavelength of the sound upwind of the sirenb, Ask an Expert

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(a) Find the wavelength of the sound upwind of the siren.

(b) Find the wavelength of the sound downwind of the siren.

(c) Firefighters are approaching the siren from various directions at 15.5 m/s. What frequency does a firefighter hear 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) What frequency does a firefighter hear if he or she is approaching from a downward position and moving against the wind?

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