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Homework Help: Pressure Question

  1. May 6, 2010 #1
    1. Relevant equations

    P=F/A

    2. The attempt at a solution

    P= 7.35 N
    -------------
    (.24m)(.2m)



    Answer= 150.0 PA. <-- That is the correct answer which my instructor gave me. Although, whenever I plus this into my calculator I wind up with 6.125 or 6.16666.... (when rounding 7.35 N to 7.4 N). What am I doing wrong? :cry:
     
  2. jcsd
  3. May 6, 2010 #2
    bump 10 char
     
  4. May 6, 2010 #3
    You're inputting the numbers into your calculator wrong. Do it one step at a time and mind your parentheses!
     
  5. May 6, 2010 #4
    @RoyalCat: How should plug them in?
     
  6. May 6, 2010 #5
    bump 10 char
     
  7. May 6, 2010 #6

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    somehow you're doing 7.4 divided by .24 divided by .2 so that the .2 comes out on top …

    7.4*0.2/0.24 = 6.1666
     
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