While standing near a railroad crossing, you hear a train horn. The frequency emitted by the horn

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While standing near a railroad crossing, you hear a train horn. The frequency emitted by the horn is 400 Hz. If the train is traveling at and the air temperature is 25 oC, what is the frequency you hear
(a) When the train is approaching and
(b) After it has passed?
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College Physics

ISBN: 978-0321601834

7th edition

Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

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