Answered: A light-rail commuter train blows its… | bartleby

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A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 333 m/s.

(a) An observer waiting at the crossing receives a frequency of 212 Hz. What is the speed of the train?
__________ m/s

(b) What frequency does the observer receive as the train moves away?
_________ Hz

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