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A train whistle is heard at 260 Hz as the train approaches town. The train cuts its speed in half as it nears the station,

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A train whistle is heard at 260 Hz as the train approaches town. The train cuts its speed in half as it nears the station, and the sound of the whistle is then 250 Hz. Part A What is the speed of the train before slowing down? Express your answer with the appropriate units. ANSWER: U1= Part B What is the speed of the train after slowing down? Express your answer with the appropriate units. ANSWER: U2 =

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