The Coulomb's Law calculator computes the force between two objects based on their charges, the distance between the objects, and the Coulomb Constant which is a function of the medium such as air or in this case a vacuum.
INSTRUCTIONS: Choose your preferred units and enter the following:
Magnetic Force: The calculator returns the force in newtons (N). However, this can be automatically converted to other force units via the pull-down menu.
describes the electrostatic interactions between two oppositely charged particles. The greater the charge on the ions and the smaller the ions are, the stronger the ionic bonding. The force is attractive if the charges are of different signs, and repulsive if they have the same sign. The is as follows:
|F| = k(|q+|·|q-|) / d²
Both q+ and q- have units of Coulombs and d has default units of meters (m).
Whitten, et al. "Chemistry" 10th Edition. Pp. 253