Recent content by Noobcake

  1. N

    PH question, I really don't get this

    10^(-pH) 10 to the -pH power.
  2. N

    What is the Maximum Height for Sliding Off a Semi-Circle?

    I do not quite understand how I should break gravity into different vectors, or is it even the right approach finding the velocity? The force you are talking about is the centrifugal force right? But, my teachers seems to be hinting that conservation of energy is needed. Care to explain further?
  3. N

    Thanks for the Help, Got It Sorted!

    Right on, the min is 3. V=(Pi)R^2=54(Pi) A=2(Pi)RH+2(Pi)R^2 Solve for H in volume, find minimum through first derivative.
  4. N

    PH question, I really don't get this

    Since pH = -log[H30+] or pH = -log[H+] H3O+/H+ = 10^(-pH)
  5. N

    What is the Maximum Height for Sliding Off a Semi-Circle?

    Homework Statement A boy sits on top of an igloo shaped like a semi-circle of Radius R. He begins to slide down the semi-circle. At what height above the ground does the boy slide off the semi-circle? Assume g=9.8 m/s2, and no friction. http://img207.imageshack.us/img207/4010/probmd1.jpg...
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