A car travelling at 81 km/hr sounds its horn as it approaches a hiker standing on the highway. The frequency is 386 Hz a

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answerhappygod
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A car travelling at 81 km/hr sounds its horn as it approaches a hiker standing on the highway. The frequency is 386 Hz a

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A car travelling at 81 km/hr sounds its horn as it approaches ahiker standing on the highway. The frequency is 386 Hz and the airtemperature is 10C. Find the frequency of the sound reaching thehiker, expressing your answer in Hertz
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