An electric dipole has opposite charges of 5 x10^15 C separated by a distance of 0.4mm. It is oriented at 60 degrees with respect to a uniform electric field of magnitude 2 x10^3 N / C .
(a) Sketch the situation and determine the dipole moment.
(b) Determine the net torque on the system, making sure to indicate the force, lever arm, and torque for each charge.
(c) What is the potential energy of the dipole in the given position?
(d) How much work must be done in order to rotate it in counter clockwise direction from this position into a position where the dipole axis is perpendicular to the external electric field?