Recent content by magiix

hahaha~! I haven't seen you in class for a few days! I thought you might have dropped out, but when I saw your screen name I knew who you were! I'll send you an email next time !

uhh.. you may want to clarify this post... What exactly are you asking? --save the copy and paste, retype clearly what the problem is, and WHICH of the problems would you like help with: #002 or #003 or #004? if you can, include the diagram of the corresponding problem. and lastly...

I'm certain you are correct about the subscripts, that's pretty standard notation. The relations: ∂pj/∂pi = δij & ∂pj/∂ri = 0 I BELIEVE are essentially just stating the independence of each component of p & r, that is... pi does not depend on pj ∀ i ≠j and pi has no dependence on...

Homework Statement Calculate the photon energy threshold for the reaction γ + p → p + π. Assume that the initial state proton is stationary. <thats really it> Homework Equations < unknown, but suspects include: standard special relativity equations > -- other useful relations: proton rest...