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Homework Help: Please help - exam tomorrow(2nd set)

  1. Feb 25, 2010 #1
    1. The problem statement, all variables and given/known data
    A positively charged plate is help 5.0 cm above a negatively charged plate. The potential difference between the two plates is 500 MV. A negatively charged object of mass 3.00 grams is plaved on the bottom plate. If the object has a total charge of 100 million electrons, what is the speed at the top? (you can ignore gravity)

    question 2. The electric potential in a region of space is given by V = by/(a^2+y^2). Calculate E

    thanks a lot in advance


    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Feb 26, 2010 #2


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    Welcome to PF!

    Hi matt4u! Welcome to PF! :wink:

    Show us what you've done, and where you're stuck, and then we'll know how to help! :smile:
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