Use Coulomb's law, F=k Q_1 Q_2 / d², to calculate the electric force on an electron (Q=-1.6 times 10⁻¹⁹ C) exerted by a single proton if the particles are 0.53 times 10⁻¹⁰ m apart. The constant k in Coulomb's law is 9.0 times 10⁹ N cdot m² / C². What is the electric force on the electron?
