1. The problem statement, all variables and given/known data Two electric dipoles, oriented as shown in the figure, are separated by a distance r. What is the force on p1 due to p2 2. Relevant equations F = (p dot ∇)E 3. The attempt at a solution I'm confused on the p dot ∇ part. How is the divergence of p not just zero? It seems p1 would just be some constant in the x hat direction.