The class is about Electricity and Magnetism. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

Suppose the density of charge between r, and ro of a hollow sphere varies as o = 20 71/r, where go is a constant and r is the distance from the center in meters. Let r1 = 6.5 cm, ro = 13.3 cm, and go = 0.57 uC/m . Find the magnitude IEl of the electric field a. at r = 3.0 cm, D . LEI = N/C abc sin(x 1X10' Submit Reset Reset All .Draw an imaginary Gaussian spherical surface concentric with the center of the sphere, with radius r = 3.0 cm. How much charge is enclosed? b. at r = 9.0 cm, IEl = N/C abc sin (x JX10' Submit Reset Reset All .Start by drawing the usual Gaussian surface. Finding the charge enclosed is challenging, since the charge is not uniformly distributed. .The amount of charge dq in a thin spherical shell of radius / and thickness dr is given by dq = o(r) 4:ur-dr. To find the total charge enclosed, integrate to add up the charges in each spherical shell. c. and at 18.0 cm. 01 0 . IEl = N/C abc |sin ( x ) OX10