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      01-29-2011, 09:11 AM   #15
1Mer
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Quote:
Originally Posted by treehacker View Post
if you take two pipes os lets say 5cm diameter, at the end, its the same as one pipe with 10cm diameter.
Actually, a single pipe only has to be 20% bigger to have a lower flow resistance than two separate pipes!

As zEdP said, if you're worried about flow resistance, it's the cat's that are the real problem
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