Question

What is the speed of a 2 HZ wave with a wavelength of 10 m

Answer 1

Answer: 20 m/s

Step-by-step explanation:

The speed
`v` of a wave is given by the following equation:

`v=(\lambda)/(T)` (1)

Where
`\lambda` is the wavelength and
`T` the period of the wave.

In addition we know there is an inverse relation between the period of a wave and its frequency
`f` :

`f=(1)/(T)` (2)

Substituting (2) in (1):

`v=\lambda.f` (3)

Now we can find the velocity of the wave with the known given values applying equation (3):

`v=(10m)(2Hz)` (4)

Finally:

`v=20 (m)/(s)`