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First of all you are writing it out in Slovenian. That makes it a little difficult for most people to follow.Hello i tried to calculate Bernulli's equation myself and i get negative pressures on both sides of equation. What am i doing wrong? It is all in a document.

Ty

But it appears that you have done the derivation correctly except you have a sign switched. The left side of your equation third from the bottom of page 1 should be [itex]-(p_2-p_1)[/itex]. This is because the change in PV is equal and opposite to the changes in kinetic and potential energy: eg. A decrease in PV energy must be equal to the increase in the sum of changes in kinetic and potential energies.

oh, in mimogrede, dobrodošli v fiziki forumih

AM

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See: http://translate.google.com/?hl=fr&ie=UTF8&text=&langpair=fr|en#en|sl|

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