[SOLVED] Finding the Magnitude of a Dipole Moment Hi there, I'm new to posting, but I've used this forum many times to help me with my homework :) I went the "take a photo of the textbook" route (there is a picture with the problem), so I hope that's acceptable. 1. The problem statement, all variables and given/known data A certain electric dipole is placed in a uniform electric field E of magnitude 40 N/C. Figure 22-51 gives the magnitude (t) of the torque on the dipole versus the angle (theta) between field E and the dipole moment p. What is the magnitude of p? E = 40 N/C 2. Relevant equations (t) = -pEsin(theta) 3. The attempt at a solution The hint we were given was "When is the torque minimum, and when is it maximum?" I'm not sure where to start. The textbook and my lecture notes aren't helping me at all. I don't quite understand the given figure, or what is being counted on the y axis (I think that number on the left is multiplied by 10^-28?). I assume that somehow I am supposed to use the min/max torque, set them equal to each other, and solve for p.. but I don't know how I'm supposed to find the min/max angles in order to do this. edit: Apparently file attachments don't work..