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    Orbital and escape velocity

    How do you derive the escape velocity formula?
  2. G

    HSC Physics - 2014 Predictions

    Find the final velocity of a cathode ray on a superconductive mag lev train traveling a .99c that was launched off ground level tracks at 30 degrees. And how many people where killed in the train crash.
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    Do Protostars go to Red Giants before our Main Sequence Sun?

    Are blue supergiants ever on the main sequence? And whats before a blue supergiant
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    General Thoughts: Software Design and Development

    If I interpreted it right the interactive book one wasn't that hard if you used a multidimensional array. All you had to do was display page[1][1] and then have a for loop where you get the next choice and display the next page.
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