Asubject mass m is embedded in an infinite homogeneous sea of field stars with number density n(m)dm in the mass range (m, m+dm). the field stars of all masses have a maxwellian df with dispersion a. thus the field stars are not in thermal equilibrium, which would require that a2 is inversely proportional that the subject example, if m > m) let us assume, however, to m star is in thermal equilibrium with the field stars (this could occur, for (a) show that the dispersion of the subject star is dm m2n(m м f dm mn(m) (7.217) (b) show that the df of the subject star is maxwellian

Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.