1. The problem statement, all variables and given/known data An insulating sphere with radius 0.120 m has 0.750 nC of charge uniformly distributed throughout its volume. The center of the sphere is 0.240 m above a large uniform sheet that has charge density -9.40 nC/m2. Find all points inside the sphere where the electric field is zero. 2. Relevant equations Intergral(E da) = Q_enclosed/epsilon_0 3. The attempt at a solution[/b I drew the picture, but I don't know where to start.