Hello, I would like some help understanding these physics questions. Any answers are appreciated!

The electric field of a point charge has a value of 230 N/C. If the point charge has a magnitude of 2.0 * 10^-6 C, how far (in m) from the charge is the field being evaluated?

Calculate the potential of a point charge 2 nC 1 meter away from the charge.

How much work would it take to place a second 2 nC charge 1 meter away from the initial source charge?