The frequency of sound produced by the horn of a vehicle is 680 Hz.When the vhical approaches a stationary observer the frequency of the sound heard by the observer is 700Hz. Find the speed of the vehicle
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Answer:
ν1=(v-vl/v-vs)v2
700=(343/343-vs)680
700=233240/343-vs
343-vs=233240/700
343-vs=333.2
vs=343+333.2=673.2 m/s
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