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Homework Help: Coulomb's law

  1. Mar 11, 2004 #1
    questions relate to coulomb's law.

    What will happen the to force if:

    one of the charge was doubled. (ex.q1 was doubled)
    I think that the force would double as well right?

    What if q1 and q2 were cut in half?

    the distance is tripled?

    the distance is cut in half? How do I figure this out?

    What if q1 was tripped and the distance doubled?

    Thanks
     
  2. jcsd
  3. Mar 11, 2004 #2
    See my answer on your other thread.
     
  4. Mar 11, 2004 #3
    TO do this you need to look at the form of coulombs law. It is given by:
    [itex]
    F_c=\frac{1}{4\pi\epsilon_0}\frac{q_1q_2}{r^2}
    [/itex]
    where r is the separation distance btw the paticles and q1 and q2 are the charges of the particles in question. By looking aT what should happen to F when you say double q1 you should be able to figure it all out
     
  5. Mar 12, 2004 #4
    If a question asked to find how many excess electrons are on a particle charged -4.0E-17C, what should I do? I know that the charge of a electron is -1.602E-19C but how do I know how many excess electrons there are?
     
  6. Mar 12, 2004 #5
    If a question asked you how many tomatoes were in a sack containing 1 kg of tomatoes if each tomato is 200 g, how would you solve that?
     
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