THE SMART TRICK OF ROADRUNNER PRO THAT NO ONE IS DISCUSSING

Evaluate the Unique case of the good level demand q on the origin. To work out the possible caused by q at a distance r from the origin relative to some reference of 0 at infinity (remember that we did the exact same for possible energy), Enable (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (vec E = frac kq r^two hat r ). When