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12 November, 21:48

A wave has a wavelength of 7 mm and a frequency of 9 hertz. What is its speed?

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  1. 13 November, 00:31
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    Speed of wave = Frequency x Wavelength

    so Speed = 0.7 x 9 = 6.3

    remember the calculations must be done in their Basic SI units.

    therefore, you have to convert 7 mm to meters which becomes 0.7 meters
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