 The frequency from your favorite FM radio station is 91.7 megahertz. What would be the wavelength of the wave that is producing this frequency? Okay. So how do we do this? We're going to have to solve for wavelength, right? So we're going to have to manipulate this equation algebra. So when we do that, we know that wavelength is going to be c divided by nu, like that. Okay? So c, we have to be given, that's the speed of life. Frequency is given to us here, megahertz. We've got to calculate that to regular hertz. Does anybody know what converts mega to hertz? That would be killer hertz, right? So it's 10 to the 6th is what happens, okay? So 1 megahertz, 1 times 10 to the 6th. But remember, what did we say? That, that is per second, right? So let's just write that out right now. So if you want to, you can say to the 7th. So this up here really is something like this. C times 1 divided by nu. Does everybody agree with me there? So we can use something like that, too, because we've been using canceling out units in chemistry for everything, right? So let's do that here, too. Okay? We want to cancel out our units and prove that this actually works out. So we should be getting something with units of meters, right? Because that's an appropriate length here, okay? So what do we have? Well, c, 2.998 times 10 to the 8th meters per 1 second. And the inverse, right, of frequency. So we're going to flip this thing over. So 1 second on top, 9.17 times 10 to the 7th on the bottom. Seconds, counts with seconds, and gives us meters, right? So let's just calculate that. Okay? So how many meters is it going to be? 3.6. So 2, 7 meters. So your favorite radio station is 91.7, right? It's feeding your radio with waves that are 3.27 meters long. So is there any questions about something like that? I think kind of interesting, you know, if you listen to the radio. Any other comments? Okay.