1. Not finding help here? Sign up for a free 30min 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!

AP Physics help

  1. Jan 23, 2011 #1
    1. A tire of an automobile has a gauge pressure of 30 psi at the top of a mountain, and the air temperature inside the tire is 300K. The atmospheric pressure at the top of the mountain is 1.7 atm. The car is driven down to sea level, where the atmospheric pressure is 1.0 atm and the air inside the tire is heated to 350 K. At sea level, assuming no leaks, the gauge pressure of the tire will be:

    A) lower.
    B the same.
    C) higher.




    2. I put C. higher because the pressure increases when temperature increases. But that was wrong and i dont have a clue why...
     
  2. jcsd
  3. Jan 23, 2011 #2

    SammyS

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    Who makes up these problems?

    Atmospheric pressure 1.7 atm @ top of a mountain and 1 atm @ Sea Level ? !!!
     
  4. Jan 23, 2011 #3

    SammyS

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    Well, are you sure that atmospheric pressure at the top of the mountain isn't 0,7 atm, rather than 1.7 atm.

    That would make a BIG difference.
     
  5. Jan 23, 2011 #4
    oh yes.. its 0.7 atm.. sorry typo =)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: AP Physics help
  1. Pre-AP physics help (Replies: 14)

  2. AP Physics Help (Replies: 1)

  3. IB/AP Physics Help (Replies: 1)

Loading...