Coulomb's constant 'k' in the equation F=kQQ/r2 is derived from Gauss's law. Gauss's law stated that the charge enclosed by a theoretical surface is equal to the permittivity constant, represented by the Greek letter epsilon (because I can't use an epsilon, I will use an X) times the electric flux through the surface. Flux is equal to the closed integral of electric field vector dot the vector dA (infinitesimal change in surface area) of the surface. Becasue the surface surrounding one point charge is a perfect sphere, the dot product can be ignored (The surface is uniform and every change in area is normal to the electric field), and the Electric field is constant so it can be brought out of the integral leaving integral dA. When the integral is solved, the resulting equation is XEA=Q. A equals the surface area of the sphere so XE(4*pi*r2)=Q and E=Q/(4*pi*X*r2) and because F=EQ, F=QQ/(4*pi*X*r2). This is probably looking pretty familiar. All we have to do is make k=1/(4*pi*X) to make this equation equal to good old Coulomb's law. X, the permittivity constant equals 8.854*10-12 Farads per meter, or coulombs squared seconds squared per kilograms meters cubed. If you substitute this constant into the equation k=1/(4*pi*X), you obtain Coulmb's constant.
It is 8.9875517873681764×109 N·m^2/C^2
newtons * meters squared / coulombs squared
8.998 X 10^9 N*m^2/C^2
Derivation of x2 or 2x is 2.
The derivation of the formula of pyramid can be gained easily based on the formula for a triangular prism. A pyramid is like two prisms joined together.
It is 8.9875517873681764×109 N·m^2/C^2
Well it is used in certain Chemical equations and to derive other constants. As an example the charge on an electron = 1.6019 x 10-19 coulombs. So a mole of electrons will be 6.023 x 1023 (Avagadro) x 1.6019 x 10-19 coulombs per mole = 96495 coulombs per mole which is Faraday's constant
The law is:Needed electricity in coulombs = Faraday constant (96500 C) x number of molesSo 96500 coulombs are needed.
newtons * meters squared / coulombs squared
8.998 X 10^9 N*m^2/C^2
W = (I*t*A)/(n*F)where:W = weight of plated metal in grams.I = current in coulombs per second.t = time in seconds.A = atomic weight of the metal in grams per mole.n = valence of the dissolved metal in solution in equivalents per mole.F = Faraday's constant in coulombs per equivalent. F = 96,485.309 coulombs/equivalent.
Limitations of coulombs law
Germigny-sous-Coulombs's population is 194.
The population of Coulombs-en-Valois is 606.
1.6x10^-19 coulombs/electron x 12.5x10^18 electrons = 20 coulombs
One derivation is Schildroth
The area of Germigny-sous-Coulombs is 6,530,000.0 square meters.