00:01
So for this question, we're going to run through each of these cases using f equals q v cross b.
00:06
However, since the charge is negative, that means that we're going to do the right -hand roll to find the direction of the force, and then simply pick the other direction because the q is going to induce a negative assign.
00:16
And so for the first case, you can do v cross b, and ultimately you get left as the direction.
00:28
However, since there's a negative sign, that means that the, the real direction is going to be to the right.
00:38
So that's the first case.
00:40
The second case, so v cross b is rather simple.
00:45
You get that it's moving into the page.
00:49
However, because there's a negative sign, this means that it's actually moving out of the page, which will indicate the dot...