Calculating the diameter of a bubble when it reaches the surface

  • #1

Homework Statement



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.



Homework Equations



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




The Attempt at a Solution



I'm not sure on how to find the unknowns (F or p) for the formula p=F/A
 

Answers and Replies

  • #2
Simon Bridge
Science Advisor
Homework Helper
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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.
 
  • #3
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.
Ok I got the right answer now. Thank you.
 

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