Friday
April 18, 2014

Homework Help: physics

Posted by kristen on Wednesday, July 17, 2013 at 9:06pm.

As a train moves away from you, the frequency of its whistle is determined to be 475Hz. If the actual frequency was 500 Hz and the speed of sound in air is 350m/s, what is the Train's speed?
answer is 18.4m/s please show and explain steps

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