Electrostics in Daily Life
There are numerous way it can effect your life, like the simplest shock from a door knob to your cloths sticking together in the laundry. You can even get shocked from your cat if it rolled in a synthetic carpet. There are also dangers that lie in the static, for example you can touch a gas pump and cause a spark from the static and possibly ignite the fuel that lies within the station.
Calculations
This is an example of how to solve a problem involving this equation. This equation is used to determine the electrostatic force between 2 charged objects.
Video Example
This video will help you understand with solving equations