Electric field intensity, e can be defined as the electric (coulomb) force on a unit test (1c) charge. find the electric field intensity at a distance, d from the center of a +q charged proton. use k as coulombe constant.

Explanation:

Electric field intensity E is defined as the electric (Coulomb) force on a unit test (1 C) charge. Mathematically, it is given by :

The electric force is given by :

Where

Q and q are electric charges

d is the distance between charges

The electric field intensity at a distance d from the center is given by :

So,

Hence, this is the required solution.

the entire statement is true and correct.  

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the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force