Coulomb's law

Coulomb's law is a function developed in the 1780s by physicist Charles-Augustin de Coulomb. It explains how strong the force will be between two electrostatic charges. Electrostatic means electric charges without any motion.
Direction.
Let's think of two electric charges existing in an empty space. If the two charges are opposite, (+) and (-) charges for example, they will attract each other. And if two charges are both the same, both (+) or both (-) for example, they will push each other. This is similar to how magnets act, as N and S attract each other, and as N and N, S and S push each other.
This is because electric charges make an electric field. If two fields exist in the same space at the same time, then the two fields exert (~ put) force on each other. The force they make on each other is called 'Coulomb's force' or the electrostatic force. Coulomb's law explains how big the force will be.
Scale.
Coulomb's law explains the scale between two electric charges.
The scale of electrostatic force follows the function below.
Coulomb's law explains that the force scale F is relative to ratio of formula_2,formula_3.
formula_4 and formula_5 are the scales of each electric charge. formula_6 is the distance between the two electric charges. And formula_7 has a certain value. It does not change relative to formula_4, formula_5 or formula_6. While formula_11 remains constant, when multiples of formula_4 and formula_5 become bigger, the electrostatic force will also get bigger. When the distance formula_6 becomes bigger, the electrostatic force will become smaller by the ratio of formula_3.
The exact size of formula_7 is
formula_17
formula_18N m2 C−2 (or m F−1). This constant is called Coulomb's force constant or the electrostatic force constant.
Inverse-square law.
The relation between the force of pushing or pulling (F) and the distance between the particles (formula_6) follows the Inverse-square Law. Inverse-square law means that when the distance formula_6 grows bigger, the force gets weaker by the ratio formula_3. Gravitation, Electromagnetic radiation, and sound loudness also follow this law.