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20 July, 07:33

A car moving at 16.0 m/s, passes an observer while its horn is pressed. the velocity of sound is 343 m/s and the frequency of the sound of the car's horn is 583 hz. if the car is coming toward you, what frequency would you hear?

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  1. 20 July, 09:09
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    We are asked to solve for the frequency heard when a car is coming towards the observer. The car is moving at 16 m/s and the velocity of the sound is 343 m/s where the car horns at 583 Hz. We will use Doppler's Effect formula in calculating the unknown frequency such that the solution is shown below:

    Fl = (V + Vl) * Fs / (V - Vs)

    FL = (343 + 0) * 583 / (343 - 16)

    FL = 611. 53 Hertz

    The answer for the frequency of the observer is 611.53 hertz.
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