Compute all parts of given problem:
Problem: A small metal sphere has a mass of 0.19g and a charge of -27.0nC. It is 10 cm directly above an identical sphere with the same charge. This lower sphere is fixed and cannot move.
Part I: What is the magnitude of the force between the spheres?
Part II: If the upper sphere is released, it will begin to fall. What is the magnitude of its initial acceleration?
I need help to solve the above problem and express your answer to two significant figures and include the appropriate units.