00:01
All right, so we have an electric field pointing in the positive x direction, and it has a magnitude of 353 newtons per coulomb.
00:11
And an electron sitting in this electric field, initially at rest, moves a distance 2 .7 centimeters.
00:18
We want to know what's the work done here.
00:20
So the work done is basically, you know, the electric field we're told is basically constant.
00:26
So it's the charge on the electron times the electric field, times the change in distance.
00:32
And the force is going to be directed to the left, and the displacement is also to the left.
00:39
So we're going to have a positive work.
00:40
So the magnitude of the work is going to be 1 .6 times into the negative 19th kulams times the electric field strength, 353 newtons per kulam, times the distance, 0 .07 meters.
00:55
And so this comes out to 1 .52 times 10 to the negative 18th joules.
01:05
And just in case, you know, the units you want are in electron volts, this is about 9 .53 electron volts...