Recent content by Tido611

im fairly certain its the same motion as when you spin a coin on a table.

ok I am not sure what this kind of motion is called but it is caused when a cylinder, a AA battery let's say, is liying on a flat smooth surface and a torque is applied to one end which causes the battery to stand up and spin on one of its ends. I've been looking for a name or a few details...

i can't write the metric out but here it is. http://en.wikipedia.org/wiki/FLRW_metric

Homework Statement if a(t) = a0(t/t0)^(alpha) how long does it take for a light ray to circle the universe if K = 1 Homework Equations The LFRW metric The Attempt at a Solution it involves that metric and an integral at theta = pi/2 , phi [0,2pi], l [?] and ... and something about proper...

what about W= intergral of F(x) dx

Homework Statement A proton and an alpha particle (q = +2.00e, m = 4.00u ) are fired directly toward each other from far away, each with an initial speed of 0.141c. What is their distance of closest approach, as measured between their centers? (Hint: There are two conserved quantities. Make...

A proton and an alpha particle (q = +2.00e, m = 4.00u ) are fired directly toward each other from far away, each with an initial speed of 0.141c. What is their distance of closest approach, as measured between their centers? (Hint: There are two conserved quantities. Make use of both.) I...

I was once shown a cool little trick that "proved" 1=2 and i was wondering if anyone knew what it was or where i could find it, thanks.

ok so the colors in the optical wavelength picture would be the true colours in the visible spectrum? Or would they mean somthing else, if so what?

I am also studing the Crab Nebula/Pulsar but i was wondering a different question about the spectral images. I noticed that there is one major picture of the nebula in the X-ray region and it is purple but there is one X-ray picture that i have seen far fewer times that is orange i was wondering...

HaHa(giddy laugh) LeBrad you are a King, thank you very much for you help.

Very Nice, now every thing makes sense thank you soo much but the only thing I am still wondering is where did the the 1/2 come from? h(x) is the even function and k(x) is the odd function right? but that doesn't really show that all functions are a sum of...

umm i agree with your second point but I am still not understanding the first one.

is (f(x) + f(-x)) an even function because even function, f(x)= f(-x) and is (f(x) - f(-x)) an odd function because even functions, f(x) = -f(x)? im not really sure

My prof said "every function is the sum of an even and an odd function, explain." ive spent about 2 hours off and on thinking about this and i haven't come up with anything really. is it because f(g(x)) is an even function if either f(x) or g(x) is even, and you can just split every...