How to Solve HX Equation in Physics?

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Homework Help Overview

The discussion revolves around the correct formulation of the hx equation in physics, specifically in the context of fluid dynamics and energy conservation principles. Participants are examining different expressions for hx and their derivations.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants are comparing two different equations for hx: one involving the difference of squares of velocities and the other involving the square of the difference of velocities. They are questioning which formulation is correct and referencing external material for clarification.

Discussion Status

There is an ongoing exploration of the two formulations, with some participants expressing confusion and revising their earlier agreement. The discussion reflects a collaborative effort to clarify the correct approach, with references to external sources contributing to the dialogue.

Contextual Notes

Participants are grappling with conflicting information from different sources, which is leading to a reassessment of their understanding of the equations involved. The conversation highlights the importance of verifying assumptions and definitions in physics problems.

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Homework Statement


IMO , the hx should be [ [(V1)^2] - [(V2)^2 ] ] / 2g , am i right ?

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BvU said:
however , in this link , the hx is [ (V1- V2)^2] / 2g ... which one is correct ? [ [(V1)^2] - [(V2)^2 ] ] / 2g or [ (V1- V2)^2] / 2g ??
http://www.iith.ac.in/~ksahu/class12_FM.pdf
please refer to pg 6 & 7
 
Confusing indeed. Have to withdraw my "Yeah" in post #2 -- o:) -- and turn it into a "Nope".
From your link it appears that a combination of Bernoulli and momentum balance indeed leads to this 4.28 in post #1.
So: we stand corrected ! Well done ! (your part at least...:smile:)
 
BvU said:
Confusing indeed. Have to withdraw my "Yeah" in post #2 -- o:) -- and turn it into a "Nope".
From your link it appears that a combination of Bernoulli and momentum balance indeed leads to this 4.28 in post #1.
So: we stand corrected ! Well done ! (your part at least...:smile:)
ok , so the link is correct ? i understand the expaination provided in the link and kniow my mistake already.
 
My "Yeah" has lost some of its weight, but: yeah :smile:
 
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BvU said:
My "Yeah" has lost some of its weight, but: yeah :smile:
i thought your yeah mean 'yes'
 
In short: yes, the links in post #1 and also in post #3 are correct. In fact the link in #2 agrees quite well. (more egg on face...)
And yeah, I mean yes with "yeah" and no with "nope". Bad habit on a forum like PF, I know. But I can't help it ?:) .
 

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