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Unread 26-10-2005, 15:12
Corey Balint Corey Balint is offline
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Bernoullis versus Continuity

Today in my AP Physics class we were discussing fluids and certain theorys. We were solving a problem in class and came onto a discrepency. We think there is something that we are missing but, we couldnt figure it out during class.

The problem was as so: You are given a tube with a constant Area throughout the length of the tube. The tube was then hung and therefore would have the openings at two different heights. Both ends would be open to Atmospheric Pressure.

In the equation of continiuity it is given that A1*V1=A2*V2 the Velocity remains constant throughout.
However by Bernoulli's Principle, the raised end of the tube will be affected RHO*G*H...G as gravity and H as Height and RHO as the density.

If you then attempt to solve the problem, you run into a problem, Bernoulli's Principle and the Equation of Continiuty do not equal.

We think we are missing something fairly obvious, but like I said, we couldnt figure it out.

If you need more to answer my question, post your questions back at me.
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