Efollowing items are positioned in sequence: a source of a beam of natural light of intensity i0, three ideal polarizers a, b, and c; and an observer. polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. the axis angle of polarizer a is set at 0° (vertical), and the axis angle of polarizer c is set at 50°. polarizer b is set so that the beam intensity at the observer is a maximum. what is the axis angle settings of polarizer b?

no sign of dia of fuel cell

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.

did yall get answers for this yet