What is the magnitude of the electrical force between two protons, 5 meters apart?

The answer to this question is given below in this explanation section.

Explanation:

              " the magnitude of the electrical force between two protons"

The electric force between two object is proportional to the inverse square of the object between two objects.The electric force between two electrons is the same as the electric force between two protons when they are placed as the same distance.This implies that the electric force does no depend on the mass    of the particle instead it depend on the new quantity:the electric charge.The unit of electric charge Q is the coulomb.The unit of electric charge q is the coulomb.The electric charge can be negative ,zero or positive.The electric charge on a glass rod rubbed with silk is positive.The electric charge of the electron proton and neutron are magnitude of the charge of the protons  is exactly equal to the magnitude of the charge of the electrons.The number of electrons must be equal to the number of protons.The prices magnitude of the electric force that a charged particle exerts on another is given by coulomb's law.

The magnitude of the electric force that a particular exerts on another particle is directly proportional to the product of their change and inversely proportional the square of the distance between them.

b) phosphorus pentoxide