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A bicyclist is pedaling down a road at 8 m/sec. A car approaches him from behind....

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Physics

A bicyclist is pedaling down a road at 8 m/sec. A car approacheshim from behind. When the car is preparing to pass he sounds hishorn. At first the bicyclist hears a frequency of 520 HZ but thesound appears to drop in frequency to 470 HZ after the carpasses.

a) How fast is the car moving? (v sound = 340 m/sec)(answer tonearest whole number)

b) what is the actual frequency of the horn (don't assume it isthe average of the 2 perceived frequencies)

Answer & Explanation Solved by verified expert
3.7 Ratings (359 Votes)
frequency observed by an moving observer when the sourceapproaches the observer from behind is frequency observed original frequency v speed of    See Answer
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