00:02
Okay, so we are told that the diameter of helium atom, it's just called the dhe, equals one times.
00:14
I'm guessing this is supposed to be 10 to the 2 picometers.
00:18
I'm going to google that and see if that's reasonable.
00:21
The way it shows up to me is just 1x102 picometers, which seems strange.
00:30
Helium atom, damn.
00:39
Yeah.
00:40
Okay.
00:41
So i get that the atomic diameter of helium is roughly 93 picometers.
01:06
So yeah, 100 picometers makes sense.
01:09
So this is definitely supposed to be 1 times 10 to the 2, i suppose.
01:15
Okay, great.
01:17
And what you need to figure out is how many atoms it would take to make the distance from end -to -end, lining them up 1 centimeter.
01:24
So the question is really how many 100 picometers? are there in one centimeter? how many helium atoms can we fit? and those helium atoms, helium atoms are 100 picometers, in a one centimeter box.
01:40
I mean, it's one dimensional, but that's kind of the idea.
01:43
And the way we're going to do this is we can simply turn this into division.
01:51
Right.
01:53
If we had, say, what would be a good example? like how many centimeters are in a meter, for example, right? this is the same idea, except for saying how many 100 picometers are in a centimeter, right? and the way that we can do this is simply convert a centimeter to picometers and find out what we get.
02:29
If we put them in a common unit, if we, we could put centimeters in the unit of 10 to the second picometers, whatever value we get for that will be how many hundred picometers can fit in a centimeter.
02:50
Similarly, we could convert everything to meters and simply divide the number of meters in a centimeter by the number of meters in the diameter of a helium atom...