#$&*
Phy 202
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 **
I was not able to understand the directions for creating the pressure tube, so I made it on my own using my own methods. However, I am reasonably sure the net effect was the same.
** How does the system behave and how does it 'feel'? **
When you squeeze the bottle, the air pocket on the right hand side of the tube shrinks as liquid pushes against it from the pressure tube.
** Length of the air column in units of your measuring device: **
I chose centimeters, because it was simpler for me.
** 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. **
The length of the air column is 26cm
The reading at the capped end was 100cm, and the reading at the meniscus was 74cm. So 100-74 = 26cm
** 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. **
10
26
58, 55.5
58, 55.5
58.1, 55.6
57.5, 55.2
57.8, 55.2
** 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. **
20
26
58.1, 54.4
58.1, 54.4
58, 54.4
58.2, 54.5
58, 54.3
** 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. **
28
26
58, 52
58.3, 52.1
58.1, 51.9
58, 52.3
58.1, 52
** **
** **
1 hour
@& You appear to have good data.
The second part of this lab will also help clarify aspects of the bottle engine pressure, though in that case the pressure increase is achieved by heating the gas.*@