Final answer:
To find the electric field 7.00 cm outside the surface of the paint layer, we need to know the charge on the paint layer.
Step-by-step explanation:
The electric field at a point outside the surface of a charged paint layer can be found using the formula for electric field due to a point charge. The electric field at a distance r from a point charge q can be calculated using the formula:
E = k(q/r^2)
Where E is the electric field, k is the electrostatic constant, q is the charge, and r is the distance from the charge. In this case, since there is no charge specified, we cannot calculate the electric field at that point.