Everybody. So I drew a little image for everybody here and for a um it's asking us determined attention in this strange And so what is gonna be doing some simple trade here? And so let's find the sign data, and that's gonna be wide over 1.5. OK, And that's because here we have worn and one okay, we need to find out what data is equal to and to do that we need. So what we're doing is we need to find the sine function here, okay? And because of that, we do this side and this side is simple tray. Okay. And so we have to over three. Technically, if we will NYSE, you don't have to do that. You can use Internet into calculator. That is totally fine. OK? And so data equals sign um, to me of one, 23 or a member put or 1/1 0.5. Whatever one you want putting calculator, it doesn't matter, and it's gonna evil. Teoh, 41.8 degrees. Okay, so he found the data so now will weaken. Dio is we need to find the tension in the string and the tension that drink is mass times gravity, which is this mass here. And it's gonna be two times. And the co signer dig it up. Um, that's just because we have 12 And here we have 1 20 for the mass, 9.81 meters per second. Squared times two times 41.8 groups I am was forgot. The coastline there they really right co sign at times 41.8. Okay. And you put it onto calculator and you get attention of 78.9 Newton's now, um B is asking us here. Um what at what pregnancy must string between the police, vibrate to form a steaming the wave. Okay, so we have abrasions or the velocity as t equals new in the new Israeli mass densities, we have 78.9 linear Mastin. See, the string is 0.1 square root and we get to 81 meters. Suck it. And now we have our d as me 3/2 terms. Lambda Lambda equals two D over three and R D is two which is given given to us, and that's been equal to 1.33 mirrors Time three and R. G is this guy right? And once cooled down. Now we do the frequency, which is the velocity times La Bamba. When we get to 81 um, area and we get to 80 one meters per second, divided by 1.33 meters and we get to 11 hurts. Right? That's it. Thank you, guys.