Two small charged spheres are 6.52 cm apart. they are moved, and the force each exerts on the other is found to have tripled. how far apart are they now?

They are now 3.75 cm apart.

Explanation:

It is given that, two small charged spheres are 6.52 cm apart. It they are moved, the force is found to be become tripled.

The electrostatic force is given by :

Let initial force is F' so,

...........(1)

When they moved apart, let final force is F'' = 3 F'.

...................(2)

Taking ratios of equation (1) and (2) :

or

r' = 3.75 cm

Hence, this is the required solution.                        

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