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 **
Submitted at 11:15 AM on Feb 24 2010
I really liked this experiment and look forward to the second part. I feel I was able to get really good measurements here.
** How does the system behave and how does it 'feel'? **
When I squeeze the bottle, the water in the vertical tube rises quickly while the air column decreases in the indicating tube only by a small amount.
** Length of the air column in units of your measuring device: **
I am using the singly reduced to get a more accurate measure.
** 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. **
39
I lined 1 up to the meniscus, and the end met right at 40
** 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
39
1, 1.3
1, 1.4
1, 1.35
1, 1.4
1, 1.3
39 is the length of the air col., 10 is what I am aiming for in the vertical tube. The 1s represent the reading of the meniscus on my reduced ruler before I squeezed the bottle. The second is the reading after I squeezed the bottle and the vertical tubes water position was 10 cm
** 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
39
1, 1.75
1, 1.7
1, 1.7
1, 1.75
1, 1.75
This time I raised the vertical tubes water to 20 cm and recorded the meniscus as the second number beside the 1s which is the position of the meniscus before the squeeze.
** 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. **
80
39
1, 3.7
1, 3.7
1, 3.75
1, 3.75
1, 3.7
This time I raised the vertical tube's water to 80 cm and recorded the meniscus reading as the second number beside the 1s which is the position of the meniscus before the squeeze.
** **
50
39
1, 2.85
1, 2.9
1, 2.8
1, 2.85
1, 2.85
This time I raised the vertical tube's water to 50 cm and recorded the meniscus reading as the second number beside the 1s which is the position of the meniscus before the squeeze.
** **
1 hour
&#Very good responses. Let me know if you have questions. &#