Two trains on separate tracks move towards one another.
Chapter 14, Problem 14.23(choose chapter or problem)
Two trains on separate tracks move towards one another. Train 1 has a speed of 130 km/h, train 2 a speed of 90.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1?
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