Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    matt

    2. Relevant equations



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

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    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:
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook