Only 29A and 30.

[6129a. The figure represents a solid sphere, radius of 185 cm, concentric with a spherical shell of radius 290 cm. The inner sphere has a charge of -68e on it and the outer shell has a net charge of +68e on it Determine the electric field at 250 cm from the center Give your answer in the form "abc x 10"(x)" N/C. . [2]29b. Give the direction as "Counterclockwise", "clockwise". "Radially inward", "Radially outward". [8]30. The electric potential in a certain region is given by V = [(3.8 V/m )x ] - [(4.8 V/m )y ]. Determine the electric field at the location whose coordinates is given by (x = -3.0 m, y = +1.5 m). Give your answer in the form E = "abc V/mi + de.f V/m j + ghi V/m k"