A girl is sitting nearthe open window of a train that is, Ask an Expert

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A girl is sitting nearthe open window of a train that is moving at a velocity of17.00 m/s to the east. The girl'suncle stands near the tracks and watches the train move away. Thelocomotive whistle emits sound at frequency 1010.0 Hz. The air is still. (Use 343 m/s for thespeed of sound in air for all parts of this question.)

(a) What frequency does the uncle hear?

(b) What frequency does the girl hear?

(d) What frequency does the girl now hear?

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