Recent content by technicolour1

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    Calculating Electric Field Intensity at (0, 0, z)

    Homework Statement Electric charge of density ρℓ = 5 μC/m is distributed along the arc r = 2 cm, 0 ≤ ∅ ≤ ∏/4, z = 0. Find the electric field intensity at (0, 0, z) Homework Equations dE=(dQ(r)/(4∏ε(r^2))) (unit vector R)The Attempt at a Solution Letting pL be the charge density, letting r^2 =...
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    Continuous Surface Charge Source - Integral Confusion

    1. Homework Statement Find the total charge on a circular disc of radius ρ = a if the charge density is given by ρs = ρs0 (e^−ρ) sin2 φ C/m2 where ρs0 is a constant. Are the two limits of integration from 0 -> a for ρ and 0->2∏ for φ? In the example given in the notes, ρ varies, instead of...
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    Understanding Electric Potential: How Does Charge Density Affect Potential?

    Well, since potential is a scalar, the equation representing the first diagram would be: V = (keq/r + keq/r) = 2keq/r = ((ke/r)(2q)) = (ke2q/r) The equation representing the second scenario would be V = (ke2q/r) This works only because they are scalar. Also, love the username.
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    Magnitude and angle counterclockwise from the + x direction

    Since tan is a trig function that repeats every 90deg, some consideration must be put into the signs of x and y. Since x and y are both negative, 180deg must be added to the value calculated to obtain the correct value. Likewise, if y is negative and x is positive, 270deg must be added. If x...
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    Speed of Waves: Solving a Boating Problem

    Consider the boat that is on a peak. There is one full wave between the peak which this boat is on and the peak between the two boats. Then, from the peak between the boats until the trough that the other boat is on, there is one half wave. That is a total of 1.5 waves. Hopefully this is...
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    Speed of Waves: Solving a Boating Problem

    Hi Johnn, If one boat is on a trough while the other is on a peak with one peak between them, there must be 1.5 waves between the boats. Since the boats are 30m apart, 1 wave = 30m/1.5 = 20m (If you draw it, you can tell that a full wave occurs at 2/3 the distance between them. Since 0.25...
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    What is the charge on a circular disc with a varying charge density?

    Homework Statement Find the total charge on a circular disc of radius ρ = a if the charge density is given by ρs = ρs0 (e^−ρ) sin2 φ C/m2 where ρs0 is a constant. Are the two limits of integration from 0 -> a for ρ and 0->2∏ for φ? In the example given in the notes, ρ varies, instead of...
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