A uniform line charge of linear charge density = 3.5 nC/m extends from x = 0 to

A uniform line charge of linear charge density λ= 3.5 nC/m extends from x = 0 to x = 5 m.

(a) What is the total charge? Find the electric field on the x axis at

(b) x = 6 m,

(c) x = 9 m, and

(d) x = 250 m.

(e) Find the field at x = 250 m, using the approximation that the charge is a point charge at the origin, and compare your result with that for the exact calculation in part (d).