Recent content by Fallen Seraph

I don't mean to violate any rules or conventions; these are questions pertaining to labs I'm doing as part of an undergrad degree. It's not homework, as such, so I've not put it in one of those forums But my apologies if this is incorrect. Anyhow; the experiment that bothers me is a...

Homework Statement Three electrons are confined to move on a ring of radius R. Find the equilibrium positions of the electrons in terms of the angles between them. Homework Equations Some hints with differentials are given to us, as is the potential between two of the electrons , but as...

Ah! So it is! Thank you.

[SOLVED] Understanding a proof of Carnot's theorem. I'm having trouble understand this proof of Carnot's theorem, and I would appreciate it if someone could point out where my reasoning goes wrong. The proof reads thusly: My problem with it is that is seems to imply that either the...

I'll not go into the details of the full question, because they are irrelevant to my problem. Basically I have to integrate \int_{0}^{\infty} exp (\iota\omega-\alpha)t dt Which is a nice and easy integration, but it's putting in the limits that bothers me. I simply wrote the exponent as...

I'm not convinced that one of my lecturers isn't abusing the notation in his derivations... Nevertheless, your help is most appreciated.

Well it's not actually in the context of electrical engineering, but I see what you're getting at. That would make sense to me were this notation not used to perform calculations and derive formulae, but it is. The picture I have uploaded might be a more succint summing up of my objection...

[SOLVED] Representing a wave as a complex number. I'm just a bit confused as to the validity of representing the equation of a wave or oscillatory motion as a complex number. As is my understanding the argument for doing so goes thus: Assuming our amplitude is 1, our equation is: y(t) = cos (...

I'm not looking for a solution, but rather trying to understand the question. We've been given a series of potentials, U(x), and have been told to find the one-dimensional particle motion in them. For example: U(x) = V(tan^2(cx)), V>0 My initial reaction was just to solve it for x(t)...

Indeed, but is there no way to determine the minimum power required, regardless of the method of hovering used?

Homework Statement I need to calculate the power required for an object to hover. So I need to find the power needed to maintain an upwards force of mg on the object (not using any fixed object, relying on the air for Newton's third law) , and I'd much rather do it without considering the...

Does gravitational mass increase as inertial mass does in relativistic situations? Or does GR make this idea irrelevant?

Ah right. There we go. Thanks a lot for that.

Oh I ask not for an answer or even a method. My apologies if I was unclear. I'm just unacquainted with the concept of distance of closest approach, and was wondering if I could become acquainted with it?

In an electromagnetics question I've been asked to calculate the distance of closest approach of an alpha particle which collides with a lead nucleus, but I've never come across the concept of the distance of closest approach. My book is mute on the subject and google yields nothing but more...