Friday Physics #8 - Science Barbie Edition

Programming note: I'm gone on still-working-spring-break next week, so Friday Physics will take a break unless someone wants to field science-type questions in my absence.

On to the questions! I'm more than a little sleep-deprived this week, and rushing to get some things done, so forgive me if I'm slow, or dumb, today. But this is too fun not to do, so bring on the questions!