Recent content by kde2520

I'm just reposting this question that someone else asked a long time ago but got no responses. Any help would be great. Hi, Studying for my thermal physics final and want to make sure I'm doing this right as our book doesn't have answers. Pretty simple question so I need to make sure I'm...

You're right, I didn't word it very well. Here's what I was trying to compute: \vec{u} \cdot d\vec{A} where \vec{u} = (2xy^{2}+2xz^{2})\hat{x} + (x^{2}y)\hat{y} + (x^{2}z)\hat{z} and d\vec{A} = r^{2}sin\theta d\theta d\phi \hat{r} . I first converted the magnitudes of...

Wouldn't it have been easier to look at the page you linked to and see that there is no direct conversion there than to assume that I didn't already do that and reply to my post?... maybe not. Thanks though.

Homework Statement Well, it's all in the title. I just need to show that Gauss's theorem applies to this fluid flow and have converted all my (x,y,z) components to their respective (r,theta,phi) versions, but I can't remember the spherical counterparts of \hat{x},\hat{y},\hat{z}.

Isn't that what we did for part (a)? Thanks for the LaTex tip!

I guess you mean the sign is wrong in the expansion of e^{-x}? What is it's expansion?

Homework Statement The Bloch-Gruneissen approximation for the resistance on a monovalent metal is \rho=C(T^{5}/\Theta^{6})\int^{\Theta/T}_{0}\frac{x^{5}dx}{(e^{x}-1)(1-e^{-x})} (a)For T->\infty, show that \rho=(C/4)(T/\Theta^{2}) (b)For T->0, show that...

Ok, that helps a lot. Thanks!

Ok, but I'm not seeing how the two approaches are connected since lurflurf said to change the logarithm to ln(1+x).

I'm not exactly sure how to go about changing the log to log(1+x). Do you mean to factor an x out of the demoninator for the first one and then have log(1-1/x), and for the second one log(1+1/x)?

Homework Statement With n>1, show that (a) \frac{1}{n}-ln\frac{n}{n-1}<0 and (b) \frac{1}{n}-ln\frac{n+1}{n}>0 Use these inequalities to show that the Euler-Mascheron constant (eq. 5.28 - page330) is finite. Homework Equations This is in the chapter on infinite series, in the section...

No, just any C programs. Took a class in C last spring and this was a big problem. I had to run Eclipse and store my workspace on a flash drive instead of using my own computer. Just downloaded the FTN95 compiler with Plato 3 that Useful Nucleus suggested. I'll let y'all know how it worked...

Yes yes yes, I know I know... if I could keep one of you guru's in my back pocket to help with such things (or maybe talk me out of buying a computer loaded with Vista in the first place), or maybe had more time and money to deal with it myself, I'd be in a different spot. In the meantime I...

Thanks for the reply. It wasn't the [tex]\hbar / i[tex] giving me trouble, but the idea of [tex]\psi^*[tex] being the conjugate of something with only real parts. Might sound silly I guess... Then I was having trouble seeing how we actually arived at the partial derivative with respect to x...

Can anyone help me find a compiler/IDE for FORTRAN or C that can work with Windows Vista? I am a physics student and would like to learn some programing, but my computer runs Vista and I have yet to find a compiler that works. Otherwise, are there any recommendations for a language I could...