12. [-/1 Points] SERPSE10 23.4.0P.014. ASK YOUR TEACHER | PRACTICE AB The charge per unit length on a long, straight filament is -92.8 uC/m. (a) Find the electric field 10.0 cm from the lament, where distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction; MN/C (b) Find the electric field 27.0 cm from the filament, where distances are measured perpendicular to the length of the filament. MN/C (c) Find the electric field 140 cm from the filament, where distances are measured perpendicular to the length of the filament. MN/C 14. [/1 Points] DETAILS SERPSE10 23.4.0P.016.M|. MY NOTES | ASK YOUR TEA Consider a thin, spherical shell of radius 15.0 cm with a total charge of 34.6 pC distributed uniformly on its surface. (a) Find the electric field 10.0 cm from the center of the charge distribution. magnitude MN/C direction ---Select-- v (b) Find the electric field 21.0 cm from the center of the charge distribution. magnitude MN/C direction ---Select--- v Need Help? 15. [/1 Points] DETAILS SERPSE10 23.4.P.028. MY NOTES | ASK YOUR TEA A nonconducting wall carries charge with a uniform density of 8.10 uC/cmz. (a) What is the electric field 7.20 cm in front of the wall if 7.20 cm is small compared with the dimensions of the wall? magnitude N/C direction (b) Does your result change as the distance from the wall varies? (Assume that the distance from the wall is small compared to the width and height of the wall.) 0 Yes 0 No Explain. 16. [-I1 Points] SERPSE10 23.4.P.029.M|. ASK YOUR TEACHER | PRACTICE ANOTHER A uniformly charged, straight filament 7.80 m in length has a total positive charge of 2.00 pC. An uncharged cardboard cylinder 1.20 cm in length and 10.0 cm in radius surrounds the filament at its center, with the filament as the axis of the cylinder. (a) Using reasonable approximations, nd the electric field at the surface of the cylinder. magnitude S kN/C direction (b) Using reasonable approximations, find the total electric flux through the cylinder. S N - mZ/c Need Help? ASK YOUR TEACHER | PRACTICE ANOTHER A cylindrical shell of radius 7.00 cm and length 2.33 m has its charge uniformly distributed on its curved surface. The magnitude of the electric field at a point 17.6 cm radially outward from its axis (measured from the midpoint of the shell) is 36.0 kN/C. 17. [-/1 Points] SERPSE10 23.4.P.034. (a) Find the net charge on the shell. nC (b) Find the electric field at a point 4.00 cm from the axis, measured radially outward from the midpoint of the shell. kN/C