SCIENCE
Which of the following statements are characteristics of magnetic fields? SELECT ALL THAT APPLY
A. If a bar magnet is cut in half two magnets with like poles will be created. The north pole of a magnet will be attracted to the south pole of the earth.
B. The earth’s magnetic field has no effect on the electron rays coming from the sun.
C. Magnetic fields point from the north pole to the south pole of a magnet.
D. An example of the Biot-Savart law is the effect of the earth’s magnetic field on the electron rays coming from the sun.

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

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.