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A girl is sitting near the open window of a train that is moving at a...

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Physics

A girl is sitting near the open window of a train that is movingat a velocity of 22.00 m/s to the east. The girl's uncle standsnear the tracks and watches the train move away. The locomotivewhistle emits sound at frequency 770.0 Hz. The air is still. (Use343 m/s for the speed of sound in air for all parts of thisquestion.) (a) What frequency does the uncle hear? Hz (b) Whatfrequency does the girl hear? Hz (c) A wind begins to blow from theeast at 22.00 m/s. What frequency does the uncle now hear? Hz (d)What frequency does the girl now hear? Hz

Answer & Explanation Solved by verified expert
4.0 Ratings (791 Votes)
Frequency heard f Speed of sound through the medium c Speed of the receiver through the medium Vr Spreed of the source through the medium Vs Initial frequency fi f c Vr c Vs fi a fi 770 Hz c 343 ms Vr 0 ms the uncle does not move relative to the air Vs 22 ms the whistle moves 10 ms relative to the air and it is positive because the direction is away from the    See Answer
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