She can monitor her practice run times to see if they are decreasing.
Like charges repel, while opposite charges attract.
A German Botanist named <span>Matthias Schleiden made that statement.
Hope this helps! :D</span>
Concept:
Wave: It is the disturbance in which the energy is transferred from one place to another place. During the propagation of the wave, medium particles do not move. They vibrate at their position in to and fro form.
In case of the Transverse wave, medium particles vibrate perpendicular to the direction of the wave while in case of Longitudinal wave, they vibrate along the direction of the wave.
Hence, the best definition of the wave will be the disturbance that transfers the energy from one place to another place.
