How does electrical forces act on a maglev train

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.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Bonds within one water molecule are examples of