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PHY 232
Your 'measuring atmospheric pressure' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** your comment **
** How does the system behave and how does it 'feel'? **
When you squeeze the bottle, the fluid rises in the vertical tube. Air is also pushed into the pressure tube which moves the water down the tube. When you stop squeezing the water comes out of the vertical tube
** Length of the air column in units of your measuring device: **
I used the 1/3 reduced ruler because it was still big enough that I could easily see the demarkations
** Your report of the vertical position of the first mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
26cm
I held the ruler next to the air column tube. The 1 mark was next to the right end of the column and the 27 mark was at the other end of the air column. Since I made my own reduced rulers, I made one long enough to measure the whole air column
** Your report of the vertical position of the second mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
10cm
26
26, 24
27, 25
24, 22
24, 21
25, 22
The numbers above represent how far the water moved in the pressure tube when the bottle was squeezed
** Your report of the vertical position of the highest mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
10cm
26
26, 23
25, 22
24, 21
24, 21
23,20
** Your report of the vertical position of the 'in-between' mark relative to the water surface of the first mark, the length of the air column in units of your selected measuring device, and the two meniscus positions observed with each of your five trials. **
10cm
24
24, 18
23, 18
23, 8
22,17
21, 17
** **
** **
1.5 hr
&#Your work on this lab exercise is good. Let me know if you have questions. &#