i need help w/ a science question lol....:] help please! thnx! o and also, the 1st question is more important, but if u know this one, it would help too: How is friction a factor in outer space?
Motion is produced by some of the following: 1) rotating magnetic fields (electric motors) 2) explosions (internal combustion engine) 3) heat expansion of gas (steam engine, rockets) I am not sure about friction in outer space but I believe because there is no air or gases around joints and gears, friction would literally vacuum cement the sliding parts together. You would need to ensure that some sort of matter (gas, liquid) was present in order to allow parts to slide on top of each other.
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OK, I'm thinking about the situations you mention........now, what exactly was the question.......?! Nothing, including friction, is a (factor...?) in 'outer space'. Reason: there's nothing there.
