What is E(r), the radial component of the electric field between the rod and cylindrical shell as a function of the distance r from the axis of the cylindrical rod? Express your answer in terms of λ, r, and ϵ0, the permittivity of free space. View Available Hint(s) E(r) E r E(r) = nothing Part B What is σinner, the surface charge density (charge per unit area) on the inner surface of the conducting shell? View Available Hint(s) σinner σ i n n e r sigma_inner = nothing Part C What is σouter, the surface charge density on the outside of the conducting shell? (Recall from the problem statement that the conducting shell has a total charge per unit length given by −2λ.) View Available Hint(s) σouter σ o u t e r sigma_outer = nothing Part D What is the radial component of the electric field, E(r), outside the shell?

so easy. just google the electromagnetic waves and it’ll pop up.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.