A solid sphere of radius 40.0 cm has a total positive charge of 26.0 μC uniformly distributed throughout its volume. Calculate the magnitude of the electric field (a) 0 cm, (b) 10.0 cm, (c) 40.0 cm, and (d) 60.0 cm from the center of the sphere.

A solid conducting sphere of radius 2.00 cm has a charge of 7.66 ?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 −2.84 ?C. Find the electric field at the following radii from the center of this charge configuration. find magnitude N/C and direction for all please. (a)    r = 1.00 cm (b)    r = 3.00 cm (c)    r = 4.50 cm (d)    r = 7.00 cm

In the figure below, a solid sphere, of radius a = 1.50 cm is concentric with a spherical conducting shell of inner radius b = 2.00a and outer radius c = 2.40a. The sphere has a net charge q1 = +3.00 fC which is distributed uniformly through the sphere; the shell has a net charge of q2 = −q1. (d) What is the magnitude of the electric field at radial distance r = 1.60a?  N/C(e) What is the magnitude of the electric field at radial distance r = 2.10a?  N/C(f) What is the magnitude of the electric field at radial distance r = 3.30a?  N/C   (I assumed that you solved these like the previous 3 but i guess there's an extra step)