Which of the following are properties of mechanical waves?

A mechanical wave can be described as a wave that moves by oscillations and transfers energy in a medium.

Some of the properties of the mechanical waves are:

1) The frequency of a wave equals the frequency of the vibrating source which is producing the wave.

2) Increasing the frequency of a wave decreases its wavelength.

3) The speed of a wave is equal to the wavelength multiplied by frequency.