When using Coulomb's law equation to determine the electrostatic force between two objects, what does the r in the formula represent?

Question

Quizplus · Accepted Answer

The magnitude of the electrostatic force between two point-like charges is given by Coulomb's Law:
 11ec0fda_998c_79fe_a67f_e14b1de732e5_NR0004_00 Q1 =  the charge on the point-like object one
Q2 =  the charge on the point-like object two
r =  the distance between the two objects
 11ec0fda_998c_79ff_a67f_0d263db8620c_NR0004_00 k =  the proportionality constant

When Using Coulomb's Law Equation to Determine the Electrostatic Force