I am not good in physics.You can say I am beginner in this field. I have some basic questions. I ju st want to know that  If there is repulsive force between same charges proton-proton then why ...
Why is it that the gravitational force acts on large sized objects while the strong and weak nuclear forces act at subatomic levels only? What is that stops each other to enter each others domain?
In classical physics, I know the forces due to gravity and electrostatics. I know a lot of work has been done, but don't know the status. Is there a generally accepted theory of how the force is ...