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8 November, 16:13

A wave has a wavelength of 7 mm and a frequency of 19 hertz. What is its speed?

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  1. 8 November, 16:45
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    Speed = (frequency) x (wavelength)

    Speed = (19 per second) x (7 mm)

    Speed = (19 x 7) (per second · mm)

    Speed = 133 mm/sec

    or you might want to write Speed = 0.133 m/s.
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