Recent content by hitek131

  1. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    I don't know how to relate electric flux to this problem.
  2. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    I found the integral. It is ( a (1- (r^2/R^2) * R)/2 Now I don't know how to use the Law to compute anything?
  3. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    I could use Gauss's Law and use the second condition from the specs in the problem. I could take the integral from (R/2) to R of the second condition.
  4. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    I know that Gauss's Law is the integral of vector E * vector dA
  5. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    For some reason, i don't know where to start off on this problem. There are so many specifications and I don't know if I'm doing the problem the right way.
  6. H

    What Fraction of Total Charge Lies Between (R/2) and R?

    I am not really sure what I did. I used some integration formulas's, but I don't think they are right. Do you have a better starting way then what I did?
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    What Fraction of Total Charge Lies Between (R/2) and R?

    This is what I got so far. It aint pretty. The integral from (r/2) to r of: Q/ (3R^3*pi/32)+(47R^3*pi/120) all this * (1 -(r/R)^2) * (4 * pi*r^2 dr) all divided by 4 * pi *r^2 * eplison not.
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    What Fraction of Total Charge Lies Between (R/2) and R?

    A region in space contains a total positive charge Q that is distributed spherically such that the volume charge density rho (r) is given by: rho (r)=3 * alpha * r /(2R) for r ≤ R / 2 rho (r)= alpha * [1-(r/R)^(2) ] for (R/2) ≤ r ≤ R rho (r)=0 for r ≥ R Here alpha is a positive...
  9. H

    What is the magnitude of the electric field?

    Is the mass 9.10938188(72) * 10 ^-31?
  10. H

    What is the magnitude of the electric field?

    yes i know, you use y = 1/2at^2, but you still get unknown variables
  11. H

    What is the magnitude of the electric field?

    yes it is F=E * q I know that q = 1.62 * 10^-19, but I still have an unknown variable.
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    What is the magnitude of the electric field?

    I need help with this question if anyone can give me an idea of what to do. Any help would be greatly appreciated. An electron is released from rest in a uniform electric field. The electron accelerates vertically upward, traveling 4.50 m in the first 3.00 micro seconds after it is released...
  13. H

    An electron is released from rest in a uniform electric field

    I need help with this question if anyone can give me an idea of what to do. Any help would be greatly appreciated. An electron is released from rest in a uniform electric field. The electron accelerates vertically upward, traveling 4.50 m in the first 3.00 micro seconds after it is released...
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