#$&*
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 the bottle is squeezed slightly the water in the vert tube goes up, the water plug in the pressure tube quickly moves about 3cm and the air column moves likewise. Upon release the water plug quickly pulls back to its original position and the air column does as well.
** Length of the air column in units of your measuring device: **
I used the ruler with no level of reduction because the previous paragraph stated that the measurements would only be relative and this ruler is fairly accurate for this purpose.
** 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. **
26.3
obtained by running the paper ruler the length of the air column and observing the #’s indicated on the ruler for the end of the water plug to the capped end of the tube. Actual ruler reading was 23-49.3, take the absolute value of the difference of the 2 for the length.
** 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. **
18.5
26.3
35, 35.8
35.1, 35.9
35.2, 35.9
35.2, 35.9
35.2, 35.9
1st is the length of the water level to the first mark, 2nd is the air column length, 3rd is the first trial’s length of the meniscus, 4th is the 2nd’s, 5th is the 3rd’s, 6th is the 4th’s, 7th is the 5th’s. Obtained by taping the paper ruler to the pressure tube with the meniscus located at the 35 mark on the ruler then squeezing the bottle until the water level reached the 1st mark on the vert tube and observing where the meniscus was located at relative to the paper ruler.
** 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. **
28.5
26.3
35.2, 36.1
35.3, 36.2
35.3, 36.1
35.3, 36.2
35.2, 36.2
** 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. **
78.5
26.3
35, 37
35, 37.3
35.2, 37.3
35.2, 37.5
35.3, 37.5
** **
53.5
26.3
35, 36.9
35.1, 36.9
35, 37
35, 36.9
35, 36.9
** **
2 hours
*#&!*#&!
@& Good data. You should be in good shape for Part II of this experiment.*@