Question

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

Answer 1

The speed of the wave is 18
`(m)/(s)`.

Step-by-step explanation:

Given : FREQUENCY (F) = 6Hz

WAVELENGTH(λ) = 3m

If a wave has frequency, f, of 6 Hz, its period, T, is
`(1)/(6)` 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 =
`(distance)/(time)`

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
`(m)/(s)`