Find the Wavelength of a Train Whistle Heard by a Fixed

Multiple Choice

Find the wavelength of a train whistle heard by a fixed observer as the train moves toward the observer with a velocity of 50.0 m/s.A wind blows at 5.0 m/s from the observer to the train.The whistle has a natural frequency of 500.0 Hz.

A) 0.55 m
B) 0.77 m
C) 0.75 m
D) 0.57 m