A conducting solid sphere of radius 20.0 cm is located with its center at the origin of our three-dimensional coordinate system. A charge of 0.429 nC is applied to the sphere.
a) What is the magnitude of the electric field at point (x,y,z) = (23.9 cm, -0.9 cm, 0 cm)?
b) What is angle of this electric field with respect to the x-axis at this point? (Please give your answer in degrees!)
c) What is the magnitude of the electric field at point (x,y,z) = (2.1 cm, -0.9 cm, 0 cm)?