Physics 2

[6 pts for participation.] An interesting property of a conductor of whatever shape is that its surface charge can redistribute itself. A metal sphere (Sphere 1) is given a net charge q = 81 nC. A second metal sphere (Sphere 2), whose radius is equal to that of Sphere 1, is given an unknown amount of charge q2. When the charging happened, the two spheres were very far from each other. Now, they are brought to a mutual distance of just 3.0 cm. The electric field at the midpoint of the ideal line connecting the two spheres is 2.2x 10 N/C, pointing toward Sphere 2. (a) [2 pts] Draw a sketch. How much charge should Sphere 2 have? (b) [2 pts] After the spheres are briefly made to touch, they are brought back to a mutual distance of 3.0 cm. What is the electric field at the point that is equally distant from the two spheres, now