Been stuck on this question, any answers ?

How air particles exert a pressure on the inside of the balloon

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.

Complete each row of the table below by filling in the missing prefix or missing exponent.