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The question in the book says:
A wave has a wavelength of 2mm and a frequency of 3 Hz. At what speed does the wave travel?

I know the answer is 6, because the formula is Speed= Wavelength X Frequency, but I don't know how to write the final answer, it's going to be 6??

Can you help me out, I just don't know how to label the answer.

  • Science -

    c = 2mm x 3(1/sec)
    c = 6 mm/sec
    The old name for frequency was cycles/sec.
    The new name is Herz and that stands for cycles/sec.
    Therefore, wavelength x cycle/sec
    2 mm x 3 cycles/sec = 6 mm/sec.

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