Does wave speed really equal frequency times wavelength?Explain.

Waves on a String.

Waves are a familiar part of everyday life. You have probably seen water waves and waves on a string. You hear sound waves and see light waves.

Waves have a wavelength, λ, a frequency, f, and a speed, v. These three quantities are related by:

v = fλ

Does wave speed really equal frequency times wavelength?Explain.