Dear Tutors,

Please help me with this three part problem. I'll include a list of formulas that I will be allowed to use when I take the actual test. This is only a practice final. Please include all steps. Thanks!

\fProblem 3. (15 points) A solid insulating sphere of radius "R" has a non-uniform charge per unit volume that varies with r according to the expression p = Cr3, where C is a constant and r R )? (5 points)