While standing near a railroad crossing you hear a train, Physics

While standing near a railroad crossing you hear a train

While standing near a railroad crossing, you hear a train horn. The frequency emitted by the horn is 350Hz . If the train is traveling at 75 km/hr and the air temperature is 25C , what is the frequency you hear when the train is approaching you? What is the frequency you hear after the train has passed?

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Physics: While standing near a railroad crossing you hear a train

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Physics: While standing near a railroad crossing you hear a train

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