What is the independent variable for how does the strength a column of cement depend on its diameter

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

The air that we breath is made mostly of which gaseous molecule