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** Measuring Atmospheric Pressure_labelMessages **
3/31 3 pm
** Measuring Atmospheric Pressure_labelMessages **
Water moves up the vertical tube; yet also, air moves away in the pressure tube. While getting a feel for this I believe these changes were increasing at a decreasing rate. (In other words it got harder to change the more I squeezed – possibly just due to my setup though) the reduction of volume increases pressure causing these changes.
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I am using the larger(normal?) one provided last semester. However, I choose this ruler because it seemed to be accurate to 1/10th of a cm and this was this was the most I would be willing to estimate within 1 unit.
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39.3 cm
I measured from the edge of the ‘stopper’ at the end of the tube to where the water began.
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19.0
39.3
17.5, 6.3
17.5, 7.0
18.2, 7.4
18.5, 7.8
19.6, 8.1
In the data given above we measure: the distance to marking #1, length of air in the tube, and then the movement changes of the water. All data in cm
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29
39.3
34.2, 13.5
34.1, 12
34.2, 11.2
34.6, 10.7
34.2, 10.4
In the data given above we measure: the distance to marking #2, length of air in the tube, and then the movement changes of the water. All data in cm
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35
39.3
33.0, 11.5
32.9, 11.3
33.5, 10.5
33.7, 10.3
33.8, 10.0
In the data given above we measure: the distance to marking between 2-3 on this one (max with nominal pressure applied), length of air in the tube, and then the movement changes of the water. All data in cm
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*#&!*#&!
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I'm not 100% sure of what all the numbers mean, but we'll see how it all works out in Part 2.
Be sure in Part 2 that you base the pressures in the 'pressure tube' on the relative lengths of the air column.
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