Input information:

Doppler shift |  \nfrequency at the source | 300 Hz  (hertz)\nspeed of the source away from the observer | 75 mph  (miles per hour)\nsound speed | 340.27 m\/s  (meters per second)


f_o\/f_s = c\/(c + v_s) |  \nf_o | frequency observed\nf_s | frequency at the source\nv_s | speed of the source away from the observer\nc | sound speed\n(the ratio between emitted and observed sound frequencies due to relative motion)

Audible frequencies:

source: 300 Hz  (hertz)  |  observed: 273.1 Hz  (hertz)

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