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Homework Help: Calculating the diameter of a bubble when it reaches the surface

  1. Dec 8, 2011 #1
    1. The problem statement, all variables and given/known data

    A scuba diver releases an air bubble of diameter 1.0 cm at a depth of 15 m below the surface of a lake. What will be the diameter of this bubble when it reaches the surface? Assume that the temperature of this bubble remains constant.



    2. Relevant equations

    p=F/A
    pV=nRT
    pV=NkT
    R=8.31 J/mole K




    3. The attempt at a solution

    I'm not sure on how to find the unknowns (F or p) for the formula p=F/A
     
  2. jcsd
  3. Dec 8, 2011 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    You realize this is an isothermal process?
    You just need to know the pressure as a function of depth - google for it :) if it's not in your notes.
     
  4. Dec 8, 2011 #3
    Ok I got the right answer now. Thank you.
     
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