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28 March, 19:34

Two tuning forks produce sounds of wavelengths of 3.4 meters and 3.3 meters.

Given that the speed of sound in air is 340 m/s, approximately what is the beat frequency produced by these two tuning forks?

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  1. 28 March, 19:48
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    wavelength, λ = 3.4 m

    wavelength, λ' = 3.3 m

    Speed, v = 340 m/s

    f = v / λ = 340 / 3.4 = 100 Hz

    f' = v / λ' = 340 / 3.3 = 103.03 Hz

    Frequency of beat, n = f' - f = 103.03 - 100 = 3.03 Hz
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