Recent content by afcwestwarrior

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    Electric field due to a line of charge: HELP

    Electric field due to a line of charge: HELP! Homework Statement Positive charge q = 7.81 X 10^-12 C is spread uniformly along a thing nonconducting rod of length L = 14.5 cm or .145 m. What are (a) magnitude and (b) direction (relative to the positive direction of the x axis) of the...
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    Coulumb's law: What is the net charge of the shell?

    Thanks man for the help.
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    Coulumb's law: What is the net charge of the shell?

    Yea I do, but I'm very rusty on it. Ouch.
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    Coulumb's law: What is the net charge of the shell?

    So it becomes Q = (p^2) /2 * V
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    Coulumb's law: What is the net charge of the shell?

    So it becomes Q= p * v Because p is constant and the antiderivative of DV is V.
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    Coulumb's law: What is the net charge of the shell?

    Ok, so I have to integrate it. Yea I'm barely learning this stuff, and it's confusing when you apply calculus to physics.
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    Coulumb's law: What is the net charge of the shell?

    What do you mean by integrate, do you mean I shall take the derivative.
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    Coulumb's law: What is the net charge of the shell?

    Homework Statement A nonconduction spherical shell, with an inner radius of 4.0 cm and an outer radius of 6.0 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces. The volume charge density p is the charge per unit volume, with the unit coulumb per cubic...
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    Take the derivative respect to U

    Thanks for the assistance!
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    Take the derivative respect to U

    V= T^(1/2)*-(1/2) * u^(-3/2)
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    Take the derivative respect to U

    V = \sqrt{T/u} Take the derivative respect to U. I'm having trouble with this. \sqrt{T} * 1/\sqrt{u} So would u look like this U^-(1/2) since T is constant I'd leave it alone. it would become -(1/2) * u^(-3/2) Am I right or Am I wrong.
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    Is this correct. Evaluate the line integral

    Evaluate the line integral \int F \circ dr for (a) F(x,y) = (x - y) * i + xy * j and C is the top half of a circle of radius 2. Here's green's theorem. Double integral ( dQ/ dx - dP/dy) dA dQ/dx = y dP /dy = -1 It becomes ∫∫ (y +1) dA y = r sin Θ so...
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    Electron and matter waves: WE NEED HELP

    Electron and matter waves: WE NEED HELP! Homework Statement Calculate the de Broglie wavelength of (a) a 1.00Kev electron, (b) a 1.00Kev photon, and (c) a 1.00KeV neutron Homework Equations K = mv^2 / 2 p = mv p = sqrt 2KM m of electron is 9.11 * 10^-31 kg 1 ev = 1.6 *...
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    Photons and matter waves: The photon of quantum light: I

    I got 2.86 * 10 ^ -3 m/s
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    Photons and matter waves: The photon of quantum light: I

    Oh yea the Enery of a photon for sodium light is actually E = 3.371186441 \times 10^-19