Two tiny conducting spheres are identical and carry charges of −21.9 μC and +42.1 μC. They are separated by a distance of 2.01 cm. (a) What is the magnitude of the force that each sphere experiences? (b) The spheres are brought into contact and then separated to a distance of 2.01 cm. Determine the magnitude of the force that each sphere now experiences. (a) Number Units (b) Number Units