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course phy122
2/3 6
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)?
I was able to raise the water to 117 cm by squeezing a 10 on the scale from 1-10.
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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.
Water column height Squeeze
171 cm 10
162 cm 8
154cm 5
147cm 1
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It takes some effort to raise water to even the top of the cap. I would say that it takes a lot more than a 1 to get the water to 147 cm.
However perception is unreliable in any case, and we'll go with your perceptions.
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Looks good, if we take a caveat for the imprecision of perceptions.
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