Recent content by bmace

I've got a question that I am stumped on right now Show that if the Galactic angular velocity \Omega of an interstellar cloud is > sqrt(4piG\rho/3), the cloud can not collapse in the radial direction. Estimate \Omega and compare it to the rotation rate of the Galaxy.

thanks really appreciate the help

alright think I've got it Cf(t)^1/f'(t) + Kf(t)^(-b/f'(t)) where K is the constant of integration and from there just got to plug in the intial conditions and solve for K

the integrating factor should be e^\int b/f(t) = f(t)^b/f'(t)

yeah f is another constant, I've taken diff eq before, this is for a mathematical physics class, I just can't seem to get it down to a recognizable form that I know how to differentiate

Homework Statement Find x=x(t) given x(0) = -V0 (V0 + (a - b)t)(dx/dt) = (V0 + (a - b)t)a(2f-1) -bx a and b are lambda in and lambda out The Attempt at a Solution Honestly don't know where to start that's why I came and asked it here . The only thing I can think of is to make...