If you have a positive electrical force, and a negative electrical force, what do you expect will happen?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

The discovery of the electron as a subatomic particle was a result of

Diverging mirrors and lenses always produce images