Doppler Effect You are waiting at a train station when an approaching express train sounds its...
Doppler Effect
You are waiting at a train station when an approaching express train sounds its 400 Hz horn, warning everyone to stand back from the platform as it passes. If you perceive the frequency of the horn to be 425 Hz as the train approaches, how fast must the train be moving towards you? You may assume the speed of sound is 343 m/s.
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Doppler Effect
You are waiting at a train station when an approaching express
train sounds its...
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As you stand near a railroad track, a train passes by at a speed of 30.1 m/s while sounding its horn at a frequency of 218 Hz. What frequency do you hear as the train approaches you and what frequency while it recedes? Take the speed of sound in air to be 343 m/s. approaching: Hz receding:
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