after a bad thunderstorm, a loose power line comes to rest in a parked van. the van is insulated from the ground by its tires, and accumulates an electric charge of Qv = 0.0013 coulombs from the loose power line. treat the van as a conducting rectangular box with dimensions of Wv x Lv x Hv, where Wv = 1.80 m, Lv = 2.7 m, and Hv = 1.8 m. enter an expression for the electric flux at the surface of the van in terms of the total charge on the van.

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→∞.