Physics

Vandebilt Catholic High School

W. Dupre

Electrostatics

Important Constants

Mass of an electron m_e = 9.11 X 10^-31 kg

Mass of a proton m_p = 1.67 X 10^-27 kg

Mass of a neutron m_n = 1.67 X 10^-27 kg

Elementary charge e = + 1.6 X 10^-19 C

One Coulomb C = 6.25 X 10¹⁸ e

Electrostatic (Coulomb) Constant k = 9.0 X 10⁹ N m² / C²

Universal Gravitational Constant G = 6.67 X 10^-11 N m² / kg²