Science help?

Jul 24, 2010 17:10

In his research paper, student talks about Archimedes' principle and gives, as an example, elevated water sources that deliver water to a municipal area. But I don't see how that's an example of buoyancy. I think it's just gravity that creates the pressure that delivers the water.

Maybe I'm wrong, and there's some feature of buoyancy at work here that I haven't thought of? The pressure increases with increased elevation of the water source. I know the water tower displaces some air, but it doesn't seem like that would be the thing creating the pressure. A sealed tower would displace the same amount of air whether it was on the ground or 100 feet in the air, right?

Surely there's somebody out there who has a better educational background and/or native logic in physics than I have. (I was an English major.) Or can just think better than me. (That's not hard.) Halp.

teaching

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