What is the speed, in m/s, of a wave on a cord if it has a wavelength of 4 m and a period of 0.5 s?

Given

Wavelength = 4 m

Time (t) = 0.5 sec

Speed (S) = ?

Explanation:

first we should calculate the frequency

so Frequency

= 1/t

= 1 / 0.5

=2 Hertz

Now Speed = wavelength * frequency

= 4 * 2

= 8 m/s