Question

Tapping the surface of a pan of water generates 17.5 waves per second. If the wavelength of each wave is 45 cm, what is the speed of the waves?

Answer 1

7.9 m/s

Step-by-step explanation:

Answer 2

Speed of the wave is 7.87 m/s.

Step-by-step explanation:

It is given that, tapping the surface of a pan of water generates 17.5 waves per second.

We know that the number of waves per second is called the frequency of a wave.

So, f = 17.5 Hz

Wavelength of each wave,
`\lambda=45\ cm=0.45\ m`

Speed of the wave is given by :

`v=f\lambda`

`v=17.5* 0.45`

v = 7.87 m/s

So, the speed of the wave is 7.87 m/s. Hence, this is the required solution.