20. [-/1 Points] DETAILS SERPSE10 24.6.OP.033.MI. MY NOTES ASK YOUR TEA A thin, square, conducting plate 45.0 cm on a side lies in the xy plane. A total charge of 3.30 x 10- C is placed on the plate. You may assume the charge density is uniform. (a) Find the charge density on each face of the plate. c /m 2 (b) Find the electric field just above the plate. magnitude N/C direction ---Select--- (c) Find the electric field just below the plate. magnitude N/C direction ---Select---21. [-/1 Points] DETAILS SERPSE10 24.6.P.034.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A solid conducting sphere of radius 2.00 cm has a charge of 8.04 C. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge of -1.90 MC. Find the electric field at the following radii from the center of this charge configuration. (a) r = 1.00 cm magnitude N/C direction ---Select--- (b) r= 3.00 cm magnitude N/C direction ---Select--- v (c) r = 4.50 cm magnitude N/C direction ---Select--- (d) r = 7.00 cm magnitude N/C direction ---Select--- V22. [-/1 Points] SERPSE10 24.A.P.047. ASK YOUR TEACHER PRACTICE ANOTHER For the conguration shown in the gure below, suppose a = 5.00 cm, b = 20.0 cm, and c = 25.0 cm. Furthermore, suppose the electric field at a point 12.0 cm from the center is measured to be 3.35 x 103 Wt: radially inward and the electric field at a point 50.0 cm from the center is of magnitude 237 WC and points radially outward. From this information, find the following. (Include the sign of the charge in your answer.) Insulator Conductor 3 I G) (a) the charge on the insulating sphere : C (b) the net charge on the hollow conducting sphere C (c) the charge on the inner surface of the hollow conducting sphere :6 (d) the charge on the outer surface of the hollow conducting sphere :C