Final answer:
When the two metal spheres are in contact with each other, charge will redistribute evenly across the two spheres. If one sphere has a positive charge and the other has a negative charge, the charges will neutralize each other and both spheres will end up with a net charge of zero. If the object has gained electrons from a neutral object, the neutral object will have a positive charge.
Step-by-step explanation:
When the two metal spheres are in contact with each other, charge will redistribute evenly across the two spheres. This happens because when negative charge is transferred from one object to another, an excess of positive charge is left behind.
The final charge on each sphere will depend on the initial charges of the objects and whether there was a transfer of electrons. If one sphere has a positive charge and the other has a negative charge, the charges will neutralize each other and both spheres will end up with a net charge of zero.
If the object has gained electrons from a neutral object, the neutral object will have a positive charge.