Recent content by Wables

  1. W

    Continuity on piecewise function

    Oh really? Cool! Thanks! So by stating the intervals of continuity, I satisfied the last part of the problem? Cause I was not sure what it was asking..
  2. W

    Continuity on piecewise function

    Homework Statement [10 Marks] At which points is the following function continuous and at which point is it discontinuous. Explain the types of discontinuity at each point where the function is discontinuous. Then at each point of the discontinuity, if possible, find a value for f(x) that makes...
  3. W

    Where is the net electric field zero for two fixed charges on an x axis?

    OH! Haha thanks for catching that. Okay. Thanks for your help, this question was really bugging me! :)
  4. W

    Where is the net electric field zero for two fixed charges on an x axis?

    Thanks for the welcome. r1+x=20 r2+x=70 I can use these! Ooooh! Okay, so: q1/r12=q2/r22 => (q1/q2)(1/2)r2=r1 Let (q1/q2)(1/2) = z r2+x=70 => r2=70-x r1+x=20 => zr2 + x = 20 => z(70-x) + x = 20 => x-zx = 20 - 70z But z is a root of a negative number...?
  5. W

    Where is the net electric field zero for two fixed charges on an x axis?

    Homework Statement Two particles are fixed to an x axis: particle 1 of charge q1= 2.1 * 10^-8 and particle 2 of charge q2= -4.00q1 at x=70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero? Homework Equations Enet = E1 + E2 E=F/q F=k...
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