5. What is the distance of an electric field charge from a small sphere if the electric field has an overall charge of 2 x 10°N/C and a net charge of -3 x 10^c?

With i really need the correct answer!

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?