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Determine the Frequency

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October 1st, 2022

Two trains on separate but parallel tracks are moving in the same direction. The fast train is moving 200 km/h and the slower train is moving 100 km/h. The slow train blows its horn with a frequency of 600 Hz. Determine the frequency the faster train hears as it approaches the slower train from behind. Determine the frequency the faster train hears after it passes the slower train.

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