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Homework Help: Vector Calculus II: Flux Integrals

  1. May 6, 2010 #1
    1. The problem statement, all variables and given/known data

    F = 2i + 3j through a disk of radius 5 in the plane y = 2 oriented in the direction of increasing y.
    Calculate the flux of the vector field through the surface.

    2. Relevant equations

    3. The attempt at a solution

    I know that I need to calculate the area vector of the surface and then dot that with F, However, I'm in a bit of a brain slump and can't figure out how to calculate the Area Vector.
  2. jcsd
  3. May 6, 2010 #2


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    Well, in the simple case of a planar (flat) area, the area vector is the unit normal multiplied by the usual area element in that plane.
  4. May 6, 2010 #3
    Yes. Shortly after the post, I was able to solve this problem. Anyways, thank you for your help.
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