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Re: fluid flowing between 2 tanks



Bernoulli's principle is a statement of energy conservation. There is a
totally inelastic collision between the falling water and the lower tank
(much like the sand falling onto the scale in a recent thread) => mandated
dissipation => Bernoulli has no vote!

Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor
----- Original Message -----
From: "Carl E. Mungan" <mungan@USNA.EDU>
To: <PHYS-L@lists.nau.edu>
Sent: Tuesday, November 26, 2002 5:49 PM
Subject: fluid flowing between 2 tanks


| Consider a tank with a drain pipe in its bottom opening into an
| identical tank directly below the first:
|
| | |
| |____ ____|
| ||
| ||
| | || |
| |__________|
| . . .
| Obviously both answers cannot be right. I suspect the second is wrong
| and that there is *necessarily* some kind of turbulent or viscous
| loss of speed. Basically we converted gravitational PE into KE and
| then got rid of it somehow. . . .
|



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This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.