Recent content by victoria13

The equation for the isotropic velocity dispersion of the stars, sigma(r), is the Jeans equation, GM(< r)/r^2 = −(1/p*)d/dr(p*sigma^2) Assume that the stellar density p*(r) = 0.8ptot(r), where ptot(r)~1/r^2, as derived earlier. Show that a constant velocity dispersion, sigma(r) = sigma0, is...

i need help with this one too!

so the energies are when n=3 and n=1?

ok so i have a question on infinite potential wells... if you have the energy state when n=3, does that mean that you have to have the energy state when n=2 and n=1? Ok basically the Q we are given is: A particle of mass m is trapped in an infinitely deep one-dimensional potential well...

ok I am not quite sure what you mean. when I set (A+I)v2=v3 using my v2= (2 0 -1) i get a matrix that doesn't multiply to get a jordan form...

anyone?

Homework Statement Find the Jordan Normal Form of 3,0,8 3,-1,6 -2,0,-5 Homework Equations The Attempt at a Solution I got the eigen values as lambda=-1 found 2 eigen vectors: -2 0 1 and 0 1 0 now when i try and do (A+I)^2 I get a zero matrix so cannot...