littlemouse Posted November 15, 2011 Report Share Posted November 15, 2011 (edited) hey, I am doing an investigation on the effect of capillary tube forces on different length of capillary tubes. The dependent variable is the height of the liquid (water) in each tube.What do i need to know for this investigation and has there to be any calculations.I am so lost:( please help ! Edited November 15, 2011 by King Glau No need for capital letters, thanks :) Reply Link to post Share on other sites More sharing options...
Keel Posted November 15, 2011 Report Share Posted November 15, 2011 (edited) hey, I am doing an investigation on the effect of capillary tube forces on different length of capillary tubes. The dependent variable is the height of the liquid (water) in each tube.What do i need to know for this investigation and has there to be any calculations.I AM SOOO LOST:( PLEASE HELP !Strictly speaking this isn't chemistry as it has more to do with physics. The capillary rise or fall of a liquid is given by the equation:h = [4*sigma*cos(theta)] / [rho*g*d]h = height of liquid in the tubesigma = surface tensiontheta = angle of contact between liquid and glass tube (this is = to 0 for water)rho = density of the liquidg = gravitational constantd = diameter of the tube***Note that the length of the tube should not affect the height of the liquid as the atmospheric pressure is the same no matter how long you make the tube. Maybe you need to go back and check the independent variable, could it be the diameter of the tube? Edited November 15, 2011 by Keel Reply Link to post Share on other sites More sharing options...
littlemouse Posted November 21, 2011 Author Report Share Posted November 21, 2011 thank you so much Reply Link to post Share on other sites More sharing options...
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