A standing observer perceives a train whistle to have a
A standing observer perceives a train whistle to have a frequency of 300 Hz. If the train is moving towards the observer at a velocity of 25 m/s, what is the frequency of the sound waves emitted from the train? Assume the speed of sound is 300 m/s.
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A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
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A police car is moving at 37.1 m/s (83.0 mi/h) behind a speeding car that is going faster. How fast is the speeder going
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