Charge q is distributed uniformly throughout the volume of an insulating sphere of radius r = 4.00 cm. at a distance of r = 8.00 cm from the center of the sphere, the electric field due to the charge distribution has magnitude 990 n/ca) what is the volume charge density for the sphere? b) what is the magnitude of the electric field at a distance of 2.00 cm from the sphere's center?

Explanation:

k = Coulomb constant =

Q = Charge

r = Distance = 8 cm

R = Radius = 4 cm

Electric field is given by

Volume charge density is given by

The volume charge density for the sphere is

The magnitude of the electric field is

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

magnified images possible images can be real = projected onto a screen