Student Jorge says: The balloons always deflect away from the center the same amount. That shows that the force on both balloons is the same. This means that the left balloon exerts the same amount of force on the right balloon as the right balloon exerts on the left. The forces on each balloon are always the same. Bryce says: When the amount of charge added to the balloons increased, the amount of deflection of the balloons increased. This shows that the amount of force depends on the the amount of charge added. So if the right balloon has more charge than the left balloon, it must apply a greater force than the left balloon.

Required:
Which students' statements matches is correct?

it would be kevlar ^^

i'm on my way to history not a mistory.

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.