Chapter 7- Electric Field Integrals 39. A rod has non-uniform charge density A = B|x| (note the absolute values, which make a nonnegative), where B is a constant, and endpoints at (-,0) and (,0), where L is a constant, as illustrated below. The positively charged rod has total charge Q. Derive an equation for the electric field at the point (0, p), where p is a constant, in terms of k, Q, L, p, and appropriate unit vectors.

Chapter 7- Electric Field Integrals 39. A rod has non-uniform charge density A = B|x| (note the absolute values, which make a nonnegative), where B is a constant, and endpoints at (-,0) and (,0), where L is a constant, as illustrated below. The positively charged rod has total charge Q. Derive an equation for the electric field at the point (0, p), where p is a constant, in terms of k, Q, L, p, and appropriate unit vectors.