Question

2. A water wave has a speed of 4 m/s and 10

waves go past each 30 seconds.
Calculate the wavelength of the waves.

Answer 1

Answer: 12.12 m

Step-by-step explanation:

We have the following data:

`v=4 m/s` is the speed of the water wave

`f=(10 waves)/(30 s)=0.3 Hz` is the frequency of the water wave

Now, the speed of a wave is given by the following equation:

`v=\lambda f`

Where
`\lambda` is the wavelength.

Isolating
`\lambda`:

`\lambda=(v)/(f)`

`\lambda=(4 m/s)/(0.3 Hz)`

Finally:

`\lambda=12.12 m` This is the water wave wavelength