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16 November, 18:45

Two sound waves, A and B, are traveling at the same speed. Wave A has a wavelength of 50 cm and a frequency of 7000 Hz. Wave B has a frequency of 3500 Hz-half the frequency of Wave A. What is Wave B's wavelength? A. 14,000 cm B. 25 cm C. 3500 cm D. 100 cm

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  1. 16 November, 21:10
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    D. 100 cm

    Explanation:

    The speed of a wave is the wavelength times the frequency.

    v = λf

    Wave A and B have the same speed, so:

    λf = λf

    (50 cm) (7000 Hz) = λ (3500 Hz)

    λ = 100 cm
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