[8 points total] Consider the charge density p(r) = co(a)(z-2) (a) [3 points] Make a simple three-dimensional sketch of, and describe in words, the charge distribution represented by this expression. (b) [2 points] If the length unit used in describing this function is the meter, what should be the units of the constant c? (c) [3 points] Give lower limits 21, 91, 21 and upper limits 22, 92, 22 such that c8(2)(2-2) dx dy dz = 3 Coulombs r/ [ V/1 (Note: many correct answers are possible!)