00:01
Hi there.
00:01
So for this problem, we're told that electrons of kinetic energy equals to 1 ,000 mega electron balls are scattered from a target containing gold, 79, and nucleides.
00:28
So we need to use for part a of this problem, this figure, the data in this figure, to find the radius at which is.
00:38
The nuclear charge density is half its interior value.
00:46
Now, from this figure, we can see that the radius for in here, the radius for gold, as you can see in here, is approximately a value of 6 .6 .6.
01:09
So that will be half.
01:14
This radius is 6 .6 .6.
01:25
Because this is half of the value.
01:32
So the solution for part a.
01:35
Now for part b, we are asked about to use this radius to predict the approximate separation in angle between adjacent minima of the disruption pattern that is observed in the scattering.
01:52
So we know that the angle theta is equal to the wavelength divided by the radius that we just have obtained.
02:00
So this can be just expressed at half of the value.
02:05
So the kinetic energy, we know that the kinetic energy given, is 1 ,000 mega electron balls...