Posted by **Alek** on Sunday, April 27, 2008 at 5:52pm.

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.

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