The circuits that contain resistors, inductors and capacitors can have steady states after the circuit has been powered long enough for the capacitors to charge and if the power does not fluctuate. in the initial condition being that a dc circuit is powered with a circuit containing a capacitor the cap will increase in voltage until the steady state is reached. when the circuit is discharged the capacitor will decrease in voltage . in circuits containing inductors, inductors counteract the changes in current when the circuit is powered. when the circuit has been powered the will act as the path of least resistance to the point the other current paths containing resistors and other circuit elements can be ignored.

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.

it's a b and