Two trains are traveling toward each other at 31.0 m/s relative to the ground. One train isblowing a whistle at 1230 Hz.
(a) What frequency will be heard on the other train instill air?
Hz
(b) What frequency will be heard on the other train if the wind isblowing at 31.0 m/s toward the whistleand away from the listener?
Hz
(c) What frequency will be heard if the wind direction isreversed?
Hz