A wave is a disturbance in a medium that carries energy without a net movement of particles.
Wave speed is the distance a wave travels in a given amount of time.
Formula to calculate wave speed.
![How to Calculate Wave Speed.](https://www.learntocalculate.com/wp-content/uploads/2020/05/wavespeed.png)
Example:
What is the speed of an electromagnetic wave whose length is 3.5m and has a frequency of 100,000,000 Hz.
![How to Calculate Wave Speed.](https://www.learntocalculate.com/wp-content/uploads/2020/05/wavespeed-2.png)
Therefore, the speed of the wave is 350,000,000 m/s.