measuring atmospheric pressure

#$&*

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 **

This lab write up is very confusing.

** How does the system behave and how does it 'feel'? **

When i squeeze the bottle harder the higher the water rises and the smaller the air bubble gets in the pressure tube. The vertical tube moves more than the pressure tube.

** Length of the air column in units of your measuring device: **

I have chosen to use 10 cm integrals on the vertical tube and one centimeter integrals on the pressure tube because the vertical tube moves more than the pressure tube with the squeeze.

** 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. **

30cm is the length of my initial air pocket,

I measured from the cap to the start of the cola.

** 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. **

20

30cm original

28

28

27.9

28.1

28

** 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. **

30

30cm original

27

27.1

26.9

27

27

** 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. **

40cm

26.5

26.3

26.4

26.3

26.4

** **

** **

an hour and a half becuase the instructions are so confusing.

You have good data, which should lead you to good results in the second part of the experiment.

Most students don't report confusion, but you are a good student so I'll be sure to take another look.