I need to figure out the highest possible height that water can be sucked up into a straw on Earth. You have unlimited water. So far I've figured out that when you suck, you create a vacuum that allows the water to rise up due to the atmospheric pressure and the force is creates pushing down on the rest of the water, which forces to water up the tube. I also figure that the highest height will be when the force the air pressure creates = weight of the water. I have been unable to figure out the equations to solve this problem to acutally get the height. Thanks a lot for your help!