Pls I need help with this psychology discussion

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

What are atoms of the same element with varying number of neutrons

Write a polynomial function with the given zeros x= -1,0,2show your work