(4) (30 pts.) Two identical small conducting spheres are separated by 0.60m. The spheres initially carry different amounts of charge so that each sphere experiences an attractive electric force. The total charge on the two spheres is -24 uC. The two spheres are then connected by a slender conducting wire, which is subsequently removed. (a) (10 pts.) Do the two spheres initially have the same or opposite charge? Explain. (b) (10 pts.) What happens to the charges when the wire is connected to the spheres? (c) (10 pts.) What is the force (direction and magnitude) between the spheres after the wire is removed