bhhzd8903 bhhzd8903
  • 19-01-2021
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The Doppler shift was first tested in 1845by the French scientist B. Ballot. He hadatrumpetplayersounda434Hznotewhileriding on a flat-car pulled by a locomotive. Atthe same time, a stationary trumpeter playedthe same note. Ballot heard 7 beats/s.How fast was the train moving toward him

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campbelldeon31 campbelldeon31
  • 19-01-2021
B is definitely the answer
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