Two trains are traveling toward each other at 30.5 m/srelative to the ground. One train is blowing a whistle at 500Hz.
(a) What frequency is heard on the other train in stillair?
(b) What frequency is heard on the other train if the wind isblowing at 30.5 m/s toward the whistle and away from thelistener?
(c) What frequency is heard if the wind direction isreversed?