How much of the universe is believed to consist of ordinary atoms that can be detected?
a.) 75%
b.) 20%
c.) 3%

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

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain