Aspherical thick conducting shell(with no net charge), with inner radius a and outer radinus 3a, is wrapped around an insulating uniformly positively charged sphere of radi as pictured below. a conducting wire is then attached to the outside surface of the conductor to the outer surface of a thin, hollow, neutral conductin located a very large distance away. see figure 2). (a) after the wire is connected, are any electrons transferred through this wire? if yes, describe s a and charge +q g spherical shell of radius 2a, which is which direction the electrons will move and why? if no, why not? (b) calculate the final charges on the (i) surface of the thin shell of radius 2a, (i) the outer surface of the conducting shell (radius 3a), and (ii) the inner surface of the conducting shell (radius a)?

d is the answer i came up with

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.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.