Recent content by Aroldo

I got admitted into three different Master programs in my country, and I would really appreciate if you give me some advises. I have been working with a really productive professor since the beginning of the second year of my BS. The project we have been working with is to develop spectroscopy...

Homework Statement Consider the vector space that consists of all possible linear combinations of the following functions: $$1, sin (x), cos (x), (sin (x))^{2}, (cos x)^{2}, sin (2x), cos (2x)$$ What is the dimension of this space? Exhibit a possible set of basis vectors, and demonstrate that...

Thanks for your replay. This is not an equation. This is a table from the cited article, which I have no ideia what it is about.

Hello, I've been studying spectroscopy in organic molecule and I came across an old data from 1934. 280(5b)(k,i±e), 297(1vd)(e), 354(1vd)(k,e), 378(1vd)(k,e), 398(Ovd) (e), 426(1vd)(k,e), 766(Ovd) (k,e), 807 (Od) (k,e), 817 (lb) (k,e), 842(1vd)(k,e), 862(2)(k,e), 878(3)(k,e), This is a piece...

Thank you a lot!

Hey! 1. Homework Statement One must simply calculate the magnetic field at a distance s to the wire, which carries a steady current I Homework Equations Should I write the point vector as: \mathbf{r} = s\hat{s} + \phi \hat{\phi} + z \hat{z} or \mathbf{r} = s\hat{s} + z \hat{z} ? The Attempt...

No no, you are right. My mistake. I already edited there. Thanks again.

For a point charge, V = 0 at the infinity. You helped me a lot to identify my own misunderstanding. In the previous exercise that I solved the potential wouldn't go to 0 at the infinity (it was due to a infinity distribution). Thank you a lot!

Yes, of course. r is the vector along the central axis and r' is the vector along the conical surface. $$ V(b) = \frac{1}{4\pi\epsilon_0}\int_0^b{\frac{\sigma\cdot da'}{|\textbf{r}-\textbf{r}'|}} = \frac{\sigma}{4\pi\epsilon_0}\sqrt{2}\pi\int_0^{\sqrt{2}h}\frac{r'dr'}{\sqrt{r'^2 + h^2...

At the point a = (0,0,0)

Hey guys! The question is related to problem 2.26 from Electrodynamics by Griffiths (3ed). 1. Homework Statement A conical surface (an empty ice-cream cone) carries a uniform surface charge σ. The height of the cone is h, as the radius of the top. Find the potential difference between points a...

What do you mean by 'underside', the region immediately bellow the conductor, or a phill box that starts inside the conductor and ends in z < 0?

Hi everybody, The situation is the classic one: a point charge q+ in a distance d above a conductor plane grounded: The conductor is grounded so V = 0, for z = 0. Also, far away from the system (x2 + y2 + z2 >> d) V --> 0 The argument to replace it for a q- charge seems perfect to me. What I...

Hi everyone, First of all, this is an awesome place :) I'm looking for a differential equation book, with partial differential equation (and Fourier series solution) that really goes into physics. I'm a 3-year undergrad student in Physics so I already know a little about it. By the way, for now...