Question

What is the speed of a wave if the wavelength is 100 m and the period is 20 s?

Answer 1

5m/s

The length = time X speed
100 = 20 X speed
speed = 100/20 = 5(m/s)

Answer 2

The speed of wave is 5 m/s

Explanation:

We are given the wavelength of wave is 100 m and period is 20 s.

We need to find the speed of wave.

Formula:

`\text{Speed}=\frac{\text{Wavelength}}{\text{Period}}`

where,

Wavelength = 100 m

Period = 20 s

Substitute into formula and solve for speed

`\text{Speed}=(100)/(20)=5\text{ m/s}`

Hence, The speed of wave is 5 m/s