Recent content by channel1

Homework Statement An X-ray source of wavelength gamma is directed at a sample; determine the maximum speed of scattered electrons.Homework Equations KE=(\gamma-1)mc2=hc/\lambda - hc/\lambda' The Attempt at a Solution I've been provided with the solution using the formula above, however it...

ultrafast - That didn't help me, tweaked examples as referred to please.

...wouldn't the observer in this case see the OTHER clock moving more slowly, since in his frame it's the other frame that's moving, not him?

I don't understand when I should use the Lorentz transformation versus time dilation or length contraction. I found this: http://www.phas.ubc.ca/~mav/p200/lttips.html but it's still unclear to me... "Length contraction applies when you are talking about a distance that is independent...

I feel like I don't pick up on things as quickly as my peers. I really need to slowly conceptually picture every concept or else I don't understand what we're talking about---and during lectures there's really no time to stop and visualize formulae as we go step by step through derivations. When...

So for in the future, how can I tell that they mean an adjusted time as opposed to the time observed? I understand what you're saying but it still messes with my head a bit...I don't see how we're supposed to know to assume that Anna can know the light has gone off without her actually being...

Homework Statement Anna is on a railroad flatcar moving at 0.6c relative to Bob. (Their clocks read zero as Anna's center of mass passes Bob's) Anna's arm is outstretched in the direction the flatcar moves, and in her hand a flashbulb. When the flashbulb goes off, the reading on Anna's clock...

1 - How does an electron's spin generate its own magnetic field? 2 - Why are only the orientations of electrons taken into account in statements such as "permanent magnets are created when the orientations of the spin of the electrons are orientated in the same direction" when protons also have...

damn, excel doesn't recognize the inverse error function, is there a way around that?

^ wolframalpha says yes, I think this may solve everything, thanks!

does erf^-1(erf(function)) = function?

i need to solve for a variable inside the error function on excel, is there an opposite function i can use to accomplish this? example: y = sqrt(x-t) -> x = t+y^2 except instead of a sqrt( ) I have erf( ) **this is not a math class so I don't have to get into breaking it down into the...

How are magnetars self-sustaining in light of the fact that they surpass the Eddington Limit? L_Eddington=4πcGMm/σ_T I read that that was a big reason the sources of the superstrong g-ray bursts were originally believed to be closer than magnetars actually are but I can't find why they...

Do any celestial bodies not have magnetic fields? Why? I'm having a difficult time finding good resources for dynamo theory a question about that... So first what I know: 1 - The Sun has a nonmetal hydrogen/helium plasma interior which is generating a magnetic field 2 - the Earth has a...

Do any celestial bodies not have magnetic fields? Why? I'm having a difficult time finding good resources for dynamo theory a question about that... So first what I know: 1 - The Sun has a nonmetal hydrogen/helium plasma interior which is generating a magnetic field 2 - the Earth has a...