physics 2 Electrostatics

PROBLEM 2 (20 points) Two charges q1 = 2 x 10-6 C and q2 = 6 x 10- C are separated by a distance of 0.4 m. (a) (10 points) Calculate the net force (magnitude and direction) exerted by these two charges on a third charge q3 = 4 x 10- C located halfway between qi and q2. (b) (10 points) Find the position at which q3 must be placed so that the net force on it (due to q1 and q2) is zero. SOLUTION