How fast is wave moving if its wavelength is 3m and its frequency is 6 Hz?

The speed of the wave is 18.

Explanation:

Given : FREQUENCY (F) = 6Hz

             WAVELENGTH(λ) = 3m

If a wave has frequency, f, of 6 Hz, its period, T, is  s. The wavelength,  λ , is 3 meters. That means that in the time of one period, the wave travels 3 m.

That means that in the time of one period, the wave travels 3 m.

In General ,

speed =

In applying this general definition of speed↑to a wave, we have

                  speed of the wave=wavelength period

Note: we generally use v for speed of a wave. Using the variable names, then that last formula is written

v=λ ×T

so  speed of the wave = 3× 6 =18

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