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: An air bubble

  1. Jan 16, 2005 #1
    Dear Sirs,

    i need your help in this question, truthly i can't solve it. so kindly asking you to send me an answer with proper explanation if possible.

    the question is:
    an air bubble has a volume of 2.5 cm3 when released at a depth of 40m in water. What will its volume be when it reches the surface? Assume its temperature is constant, and the atmospheric pressure=10m of water

    thank you
  2. jcsd
  3. Jan 16, 2005 #2


    User Avatar
    Gold Member

    (This is elementary to a scuba diver.)

    Google 'Boyle's Law'. It describes the very simple inverse relationship between volume and pressure in a gas.
    Try this: (http://www.grc.nasa.gov/WWW/K-12/airplane/aboyle.html)

    The only other thing you need to know is what the pressure at 40m is. Google 'pressure depth'

    Try this:(http://www.americandivecenter.com/deep/preview/pd02.htm [Broken])

    See what you can do with that, and if you get stuck, come back here.
    Last edited by a moderator: May 1, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook