213limegreen 213limegreen

22-01-2017
Physics

contestada

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

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hassanshahzaib8 hassanshahzaib8

22-01-2017

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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