|MadSci Network: Physics|
Original question: If you connect an air pump to an airtight container filled with water and place a tube at the bottom of the water that leads out through the top, will the water that comes out flow at a different rate when the container is nearly empty than when full? Picture: http://www.flickr.com/photos/51572554@N04/4742507144/ When I say air tight, I mean except for the tubes, though it is air tight around where the tubes go into the container. For the pressure provided by the air pump, assume constant, along with a constant volume of air flow. Really I want more of a hypothetical "Will it flow faster based on the height of the water column" than a "How much faster". Though if it does flow faster, any equations would be great. If you need to know the volume throughput, it isn't listed on my device and I don't have any way to measure it, other than the fact that using a 2 liter soda bottle full of water, this setup will empty the water in right around 90 seconds.
Re: Air pressure displacing water (revised)
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