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Physics questions

  1. Sep 15, 2011 #1
    1. The problem statement, all variables and given/known data

    i have uploaded physics questions here.

    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

    • p5.pdf
      File size:
      675 KB
  2. jcsd
  3. Sep 20, 2011 #2
    someone can help me solve?
  4. Sep 20, 2011 #3


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    Staff: Mentor

    I think you should limit it to one question per thread, so that the answers are also understandable and of help to others who may be perusing this forum. I also think the handwriting is too difficult to readily discern the question.

    (23) I reckon the answer may lie in the fact that the spheres are conductive. Normally, this sort of question relates to the use of insulating spheres, where the situation is equivalent to a point charge located at the centre of each sphere. But in your question, the spheres are not insulating. How may this change things?
  5. Sep 20, 2011 #4
    1)what is electrostatic forces?
    2) how to derive E = v /d ?
  6. Sep 21, 2011 #5


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    Staff: Mentor

    Good sites for keen learners to find such information are http://www.google.com" [Broken]
    Last edited by a moderator: May 5, 2017
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