00:01
We are asked to consider three different types of electromagnetic radiation, one, two, three, and we are asked to identify each type and place them in increasing photon energy and increasing frequency.
00:18
Frequency and increasing photon energy.
00:44
Energy.
00:45
And we're supposed to id type.
00:46
Come down here a little bit.
00:54
Okay, so let's do our first one.
00:56
So our frequency is 107 .1 megahertz.
00:59
Let's convert that to hertz.
01:07
And one megahertz contains one times 10 to the sixth.
01:14
Whoops, i'm going to say one times 10 to the sixth hertz.
01:20
And i just hate putting this stuff into my just writing them down without thinking about it because my head gets confused.
01:30
So this darn it.
01:35
One, two, three, four, five, six, seven, eight.
01:37
And the energy for this one will be equal to h times nu, which will equal 6 .626 times 10 to the minus 34th joule seconds times 1 .011 times 10 to the eighth hertz.
02:10
And this will equal 6 .626 times 10 to the minus 34th times second answer, enter.
02:20
And this will give me, where am i, 6 .70 times 10 to the minus 26 joules per photon.
02:34
Okay, there's my first one.
02:40
Let's go ahead and highlight these two values.
02:46
And here we have 3 .97 times 10 to the minus 19th joules per photon.
02:52
I might have to do a quick wavelength on these because i get too confused otherwise.
03:01
Okay, for my next one, let's go with our frequency will equal c divided by lambda.
03:14
So it'll be 3 .00 times 10 to the eighth meters per second divided by 2 .12 times 10 to the minus 10th meters.
03:27
Three times 10 to the eighth divided by two times 10 to the minus 10th.
03:38
It's 2 .12.
03:41
I did that wrong.
03:44
2 .12 times 10 to the minus 10th.
03:47
And that equals 1 .415 times 10 to the 18th hertz.
03:58
And my energy again will be equal to h times v 6 .626 times 10 to the minus 34th joule seconds times 1 .415 times 10 to the 18th hertz.
04:20
So 6 .626 times 10 to the minus 34th times second answer, enter.
04:29
And that is 9 .38 times 10 to the minus 16th joules per photon.
04:40
I'm going to do these two in a different color.
04:51
Okay, and then for my last one, let's go ahead and convert our energy.
04:59
Our frequency will be equal to e divided by h.
05:10
So we'll have 6, excuse me, 3 .97 times 10 to the minus 19th joules per photon divided by 6 .626 times 10 to the minus 34th.
05:29
And that will equal 3 .97 times 10 to the negative 19th divided by 6 .626 times 10 to the minus 34th.
05:43
Enter...
