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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


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    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
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