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Homework Help: Bulk Modulus

  1. Jun 1, 2009 #1
    1. The problem statement, all variables and given/known data

    When water freezes, it expands about 9.10%. What would be the pressure increase inside your automobile engine block if the water in it froze? The bulk modulus of ice is 2.00 multiplied by 10^9 N/m2.

    2. Relevant equations

    Delta P=-B*(Delta V)/V

    3. The attempt at a solution

    Delta P= 2*10^9*.091
    = 1.82*10^8 Pa

    It says that the answer is within 10% of the correct answer however I dont know if there is a small error that is causing me to be slightly off.
  2. jcsd
  3. Jun 1, 2009 #2


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    Science Advisor
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    Gold Member

    1.00 is not 9.10% less than 1.0910. Know what I mean?

    EDIT: By the way, welcome to PF!
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