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course phy 202
713 4/22
Brief Bottle Experiment 1dRaising water
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Add the extension to the tube, so that by squeezing you can force water from the bottle into the tube. Squeeze hard enough to raise the water to as high as possible into the tube. Evaluate how hard you had to squeeze, on the 1-10 scale you used in part 1b. Measure how far you were able to raise water in the tube above the level of the water in the bottle.
How high did you raise the water, and how hard did you have to squeeze (using the 1-10 scale)?
1.5 cm, squeezed about a 3/10
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Give the bottle a squeeze corresponding to 1 on the 1-10 scale, and observe how high water rises. Then give it another squeeze, halfway between 1 and the squeeze you used to raise water to the top of the tube. Do this blind. Don't look at the tube, just feel the squeeze. Then look at the tube and see where the water is.
Report a table of water column height vs. squeeze.
2, 1cm
5, 2 cm
8, 3-3.5 cm
10, 5 cm
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If the tube is open you should easily be able to raise water 50 cm, provided the tube is at least 50 cm long.
The numbers you report would be reasonable if the tube was closed at the upper end.
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