Physics, 08.12.2020 17:10 maddy121209
A car horn emits a frequency of 400 Hz. A car traveling at 20.0 m/s sounds the horn as it approaches a stationary pedestrian. What frequency does the pedestrian hear
Answers: 2
![F_s = F_o [\frac{v}{v_s + v} ] \\\\](/tpl/images/0960/8094/549ee.png)
![F_s = F_o [\frac{v}{v_s + v} ] \\\\400 = F_o [\frac{340}{20 + 340} ] \\\\400 = F_o (0.9444) \\\\F_o = \frac{400}{0.9444} \\\\F_o = 423.55 \ Hz \\](/tpl/images/0960/8094/2c380.png)
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A car horn emits a frequency of 400 Hz. A car traveling at 20.0 m/s sounds the horn as it approaches...
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