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1 August, 08:45

A ship sends out a 1200 Hz sound wave, which has a wavelength of 120 cm in the water. What would happen if that ship sent out a 600Hz sound wave instead?

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  1. 1 August, 10:20
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    the wave length becomes doubled or becomes two times the initial wavelength = 240 cm

    Explanation:

    From wave,

    v = λf ... Equation 1

    Where v = velocity of the wave, λ = wavelength of the wave, f = frequency of the wave.

    Given: f = 1200 Hz, λ = 120 cm = 1.2 m

    Substitute into equation 1

    v = 1200 (1.2)

    v = 1440 m/s.

    When the ship sent out a 600 Hz sound wave,

    make λ the subject of formula in equation 1

    λ = v/f ... Equation 2

    Given: f = 600 Hz, v = 1440 m/s

    Substitute into equation 2

    λ = 1440/600

    λ = 2.4 m or 240 cm.

    When the ship sent out a 600 Hz sound wave instead, the wave length becomes doubled or becomes two times the initial wavelength = 240 cm
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