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 **
** How does the system behave and how does it 'feel'? **
As I keep squeezing the bottle, the air between the two liquids lessens it's distance.
** Length of the air column in units of your measuring device: **
I have chosen a 3 inch reduction, since it was the easiest reading to get.
** 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 air column length is 5 inches
I obtained my result by squeezing the bottle to get the reduction as above then measured my 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
5in
2.5in,2.3in
2.2in,2.1in
2.2in,2.0in
2.1in,1.9in
2.1in,1.8in
When the bottle is squeezed, the water in the tube seems to be getting shorter/smaller.
** 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. **
15cm
5.2in
2.5in,2.5in
2.5in,2.2in
2.4in,2.1in
2.2in,2.0in
2.1in,1.9in
Again, the water seems to be getting smaller or condensing more.
** 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. **
25cm
4.9in
2.4in,2.2in
2.3in,2.2in
2.1in,2.0in
1.8in,1.7in
1.9in,1.8in
** **
** **
1 hour
Did you actually have a measuring device marked in inches and tenths of an inch?
That in itself isn't a big problem, but to analyze this data you will need to convert your measurements to metric units.