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'? **
As you squeeze the bottle, the water rises in the vertical tube while the length of the air column in the pressure measuring tube decreases. Over time, it becomes harder and harder to raise the water column.
** Length of the air column in units of your measuring device: **
I chose to use one level of reduction because for the amount that the air column in the tube is compressed, this level of reduction appears to give the most accurate measurement.
** 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. **
40 cm_s
This value was found by measuring the length of the air column beginning at the meniscus of the end of the water column closest to the capped end of the tube to the capped end of the tube.
** 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 cm
40 cm_s
20.00,19.40
20.00,19.40
20.10,19.50
20.10,19.60
20.10,19.55
This data shows that when the water was raised to a level of 10 cm, the air column was compressed on average by approximately .57 cm_s.
** 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 cm
40 cm_s
20.00,19.10
20.00,18.95
20.00,19.00
20.00,19.05
20.00,18.95
This data shows that when the water was raised to a level of 20 cm, the air column was compressed on average by approximately .99 cm_s.
** 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. **
30 cm
40 cm_s
20.00,18.90
20.15,18.70
20.10,18.80
20.10,18.65
20.00,18.50
This data shows that when the water was raised to a level of 30 cm, the air column was compressed on average by approximately 1.36 cm_s.
** **
40 cm
40 cm_s
20.00,18.50
20.10,18.50
20.05,18.40
20.00,18.30
20.10,18.30
This data shows that when the water was raised to a level of 40 cm, the air column was compressed on average by approximately 1.65 cm_s.
** **
1 hour
&#Very good responses. Let me know if you have questions. &#