Recent content by Shay10825

1. Electric potential of square loop

Is this better? http://img823.imageshack.us/i/scan0004zg.jpg/
2. Electric potential of square loop

Homework Statement There are four uniformly charged rods of linear charge density \lambda and length a, arranged as a square. What is the electric potential a distance z from the center of the square and along the symmetrical axis? The Attempt at a Solution...
3. Argument Theorem - Complex Analysis

Homework Statement Evaluate (1/2ipi)* contour integral of [z^(n-1)] / [(3z^n) - 1 ] dz Homework Equations I would assume you would have to use the Argument Theorem since this problem comes after the proof of the argument theorem in my book. The Attempt at a Solution z^(n-1)...
4. Complex Analysis: Integration

Homework Statement Evaluate the following integral for 0<r<1 by writing \cos\theta = \frac{1}{2}(e^{i\theta} + e^{-i\theta}) reducing the given integral to a complex integral over the unit circle. Evaluate: \displaystyle{\frac{1}{2\pi}\int_0^{2\pi}\frac{1}{1-2r\cos\theta +...
5. Does NaCl dissolve in HCl?

Hi everyone! I just have a quick question. If I took NaCl and put it in a 1.00 M HCl solution, would the NaCl dissolve? Thanks

Homework Statement Hello everyone! How would you solve a quadratic or nth degree congruence? For example how would I solve: (x^2) + 2x -3 = 0 (mod 8 ) The Attempt at a Solution I know this can be written like: (x^2) + 2x = 3 (mod 8 ) but where would I go from here? and...
7. Basis for P2 and Linear Transformation

b) it was suppose to be a = 2 x + 3 b = 3 x2 + 1 c = -5 x2 + x - 1
8. Basis for P2 and Linear Transformation

Hello. I'm having some trouble with this problem. Any help would be greatly appreciated. Homework Statement Consider B= (2x+3, 3x^2 +1, -5x^2 + x-1} a) Prove that B is a basis for P_2 b) Express -x^2 - 2 as a linear combination of the elements of B c) If t: P_2 -> P_2 is a linear...
9. Jobs for astronomers

Hello. I am currently a High School student wanting to peruse a career in astronomy. I was wondering if there are better job opportunities for astronomers and astrophysicists in countries other than the United States? and if so then which countries? Thanks
10. Multiple integraion

Hello everyone! I need some help with the following problems. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2. Use spherical coordinates to find the center of mass of the sphere of radius 7 and centered at the origin in which the density at any point is proportional to the distance of the point...
11. Work and energy

ok thanks:smile: i figured it out now Thanks
12. Work and energy

What exactly does the F stand for? I know the f is the force of friction. Thanks
13. Work and energy

F(parallel) = mgsin(theta) f = mgsin(theta) - mg right?
14. Work and energy

I copied it directly from the worksheet I was given http://img61.imageshack.us/img61/6411/phylab32ml.jpg [Broken]
15. Work and energy

ok http://img360.imageshack.us/img360/5497/phylab26gk.jpg [Broken]