00:07
We are asked to consider two radio stations, this and this.
00:12
Now, i'm going to tell you that the 92 .3 stands for 90 .2 .3 megahertz.
00:22
And this stands for 94 .7 megahertz.
00:30
And we're asked which broadcasts with more energy.
00:34
So let's calculate the energy for each one of these.
00:37
Energy equals plunks constant time hertz.
00:41
So i'm going to have to convert these hertz, but that's easy.
00:44
So we will take our energy will be plunks constant 6 .626 times 10 to the minus 34th, joules seconds, times 92 .3 megahertz times 1 megahertz is equal to 1 times 10 to the 6th hertz.
01:21
I'm going to verify that.
01:23
I'm pretty sure it is.
01:27
Megas a million, so yes.
01:35
And this will equal 6 .626 times 10 to the negative 34th times 92 .3 times 1 times 10 to the 6th.
01:52
We'll equal 6 .16 times 10 to the minus 26 joules.
02:07
Then for my other equation, that'll be the exact same thing here.
02:13
6 .626 times 10 to the minus 34th, joules seconds, times 94.
02:23
Times 94 .7 megahertz times 1 times 10 to the 6th megahertz, excuse me, hertz per 1 megahertz.
02:46
So that'll be 6 .626 times 10 to the minus 34.
02:50
Times 94 .7 times 1 times 10 to the 6th will equal 6 .27 times 10 to the minus 26 joules.
03:06
So we can see from this that the greater energy, what was my question? more energy.
03:14
This station has more energy...