Hi. This is example 7.2 from Hartle's "Gravity" if you happen to have it lying around.
Metric of a sphere at the north pole
The line element of a sphere (with radius a) is dS^{2}=a^{2}(d\theta^{2}+sin^{2}\theta d\phi ^{2})
(In (\theta , \phi ) coordinates).
At the north pole \theta = 0 and at...
First off, I don't need a solution, I just need to make sens of the solution I already have.
Homework Statement
What state of polarization do the following represent (Give your answer in terms of an angle relative to the transmission axis).
(a). |t> + |a>
(b) |t> + 2|a>
(c) 2|t>-|a>...
Yes, I get that. That's the method I already know how to do (thanks, by the way. I hadn't actually worked it out yet, but I knew how :) ).
I'm asking if there is an easier way to do the problem, namely, one of the two ways I suggested.
Thanks.
Homework Statement
Calculate how much work it takes to make a square of side length A with point charges (all of charge q) at each vertex.
Homework Equations
The Attempt at a Solution
I know one way to do it. (find the difference in potential for each point and then go from there...
Sorry it's so wordy, my professor's... well he likes wordy problem's I guess.
Homework Statement
I have very bad acoustics in my gym, where I have a sound system.
To model my gym’s sound system, imagine that the gym is a
cube 4m in length on each side. It’s empty, and the floor, walls...
Homework Statement
Use the Divergence Theorme to evaluate the flux of v(x,y,z)=x^{2}i+y^{2}j+z^{2}k on the solid T bounded above by a sphere with radius 3 and below by the xy-plane.
I've found that div(v) is 2(x+y+z).
When I go to set up the integral I get a triple integral over T of...
Homework Statement
http://i829.photobucket.com/albums/zz220/narfarnst/problem.jpg
Find T1 through T5 and the force on the right side of the diagram above.
(The force balances the weight, so the system is stationary).
EDIT: Oh, and the pulleys and ropes are massless and there is no friction...