Recent content by afcwestwarrior

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 postive direction of the x axis) of the electric...

Thanks man for the help.

Yea I do, but I'm very rusty on it. Ouch.

So it becomes Q = (p^2) /2 * V

So it becomes Q= p * v Because p is constant and the antiderivative of DV is V.

Ok, so I have to integrate it. Yea I'm barely learning this stuff, and it's confusing when you apply calculus to physics.

What do you mean by integrate, do you mean I shall take the derivative.

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...

Thanks for the assistance!

V= T^(1/2)*-(1/2) * u^(-3/2)

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.

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...

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 *...

I got 2.86 * 10 ^ -3 m/s

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