Does the act of lifting the sphere off the ground increase the potential energy of the aluminum sphere by a larger amount, a smaller amount, or the same amount as the silver sphere?
larger amount
smaller amount
same amount

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.