Recent content by lampshade

Hello, You've probably already seen sites about "LED throwies" which are little circuits made of An LED A small 3V watch battery A Magnet Some Tape The idea is that you make these and then stick them to different things and the glow and are pretty. Anyway, with that background...

At the time I felt that it was more of a physics problem.

Just find x(t) I left off a 2 in my work that I just noticed and that seems to have changed things a bit. I have to rework some stuff and maybe see where that ends up. As for what E is, I don't know. Nor do I technically know that m is mass, but it seems awfully like they are. They weren't...

Homework Statement \frac{dx}{dt} = \sqrt{2(\frac{E}{m}) -\omega^2 x^2} Homework Equations \frac{dx}{dt} = v The Attempt at a Solution I keep ending up with the statement x=0. \frac{dx}{dt}=\sqrt{2\frac{E}{m} -\omega^2 x^2} Then (dx/dt)^2 =2\frac{E}{m} -\omega^2 x^2...

Ok, thanks! I think I see what I did wrong!

The obvious problem that then comes up is that then appears is that I get a 0 term from the second integral that makes my whole monopole moment zero. Is this correct?

Homework Statement I'm really bad at these type of problems. I'm supposed to find the monopole moment of this continuous charge distribution. its charge is \sigma = const*cos(\theta) Homework Equations p = \int r'\rho(r')d\tau which then since we are doing a surface charge should be p =...

Homework Statement Show that the de Broglie wavelength of an electron of kinetic energy E (eV) is \lambda = \frac{12.3*10^{-8}}{E^{1/2}} Homework Equations \lambda = \frac{h}{p} E = \frac{p^2}{2m} The Attempt at a Solution I've played around with substituting and things like that, but I...

After studying it some more, I think they do actually mean the absolute value and nothing else. I'm still a bit shaky though so respond with insights if you have any, please.

Hello, I don't know if this is general math or not, but I know it is a simple question that I just don't get so I put it in this forum. I'm kinda rusty at this, but I came across an equation in a book on wavelets that uses the notation | f(t) | inside an integral and I"m not sure...

Homework Statement Basically I bought a new 7200 rpm hard drive and I was curious about it since it is a 2.5 inch notebook hard drive. What I was wondering was how many g's were pulled at the edge of the disk while it spun at 7200 rpm Homework Equations \frac{v^{2}}{r} I'm just going...

Thanks a ton for the clarification. I had actually already read the wiki page in the process but I was still a little confused. Thanks again!

something has always bothered me about nand flip flops and their use in memory so I thought I would ask this here and get it cleared up. In a basic nand flip flop like the one found here: http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/nandlatch.html#c1" I understand that there is a...

I'm also having a hard time calculating the theoretical value of the MOND acceleration. I tried using universal gravitation, the veloctiy of the Earth as it orbits the sun, and the mass of the earth, but I got a value nowhere close in magnitude to what all these websites are saying the value...

Thanks It took me a while to figure out that OOM meant Order of Magnitude, but I got it. THANKS!