Waves: Wave Speed

The video explains why thunder is heard after lightning, despite both occurring almost simultaneously. This is due to the different speeds at which light and sound waves travel. Light waves move faster than sound waves, causing the flash to be seen before the sound is heard. The video also covers how wave speed varies with wave type and medium, and how to calculate wave speed using frequency and wavelength.

What is the formula to calculate the speed of a wave?

Explain the relationship between frequency, wavelength, and wave speed.