A small positively charged ball is moved closer to a large, positively charged ball. which describes how the small ball likely responds when it is released?

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury