1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Torricelli Barometer and atmospheric pressure

  1. Apr 17, 2012 #1
    1. The problem statement, all variables and given/known data
    I have a Torricelli barometer column filled with mercury.
    Situation 1: Temperature1 = 20° C. Height: 0,760 m. Outer pressure:1 atm.
    Situation 2: Temperature2 = 35° C. Height: 0,762 m.
    Coefficient of termic dilation in the interval (T1, T2): [itex]18,2
    *10^-5 (°C)^-1[/itex]

    Find outer pressure in Situation 2.

    2. The attempt at a solution
    I used a proportion: [itex]1 atm : 0,760 m = x atm : 0,762 m[/itex]. But my result is wrong.
    What would you do?
    Thank you so much
  2. jcsd
  3. Apr 17, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper

    hi bznm! :smile:

    how did you take account of the thermal expansion in your calculations?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook