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Gravity pulls things, everyone knows that. But why? Does it have a positive or neutral or negative charge? If it has one, could it have the opposite? If A planet made entirely of negatively charged carbon atoms existed, would it still have gravity that affected other negative things? If it was neutral, would it have any pull at all? Does it have a stronger pull on opposite atoms, that is, assuming it has a pull on same charged atoms? What is our planet? If positive or negative does that mean we have to be the opposite? Also, more importantly, are there objects, other than anti-matter, that go unaffected by our gravity because they too are what ever charge our planet is? This is all basically one question, most questions here are only so that you get what I am thinking. Essentially, what is gravity, and how does electromagnetic energy come into it all?

I'm 15 and I was using my step-dads computer for my itunes stuff. His computers internet card broke (or maybe its the computer, since its like a ten year old dell laptop.) anyway, internet doesn't work, and since then I've gotten a new computer with internet in my bedroom. I have itunes on it, and logged in, but it won't let me download my itunes purchases. The purchases menu doesn't even show up. Any help you could give would be appreciated, thanks.

Maximum the Hormone RULES!!!!!!

I have a Mac iBook G4. My computer has many disabled features, and I am trying to download some vids. I have downloaded several, in AVI format. I cannot view them even with a xvid codec. I use Quicktime. How can I convert it to another format, viewable by my com?

Either European or West African will do.