![reflector 2 no sound reflector 2 no sound](https://pbs.twimg.com/media/ErlaD40XYAAD2Nj.jpg)
So the interview is the intensity time, the time, times the area. Just remember that the intensity is the energy divided by time, times the area. So I is equal to zero point 0126 What's per square meter? This is the intensity of the sound and with the intensity, the area that we already have in the time we can calculate the energy. What's first card meter? Then we have to multiply by 10 times 101 divided by 10. Now notice that I zero is 10 to the minus 12. So I is it mutual? Zero times 10 to the beta divided by 10 Mhm. Um, so beta divided by 10 is able to the log in base 10 off. So basically, we have the data is 110 101 DC bells, and we want to isolate high. We have to calculate what is the total sound energy emitted by the people singing. Inside the church is 101 S E bells, and we also have that the total area off the church is equal to 22 meters squared meters and the people sing for a time off 20 minutes and in question A. So in our exercise we have people singing inside a church, and we have the sound level. That's certain point in space divided by zero, where I zero is equal to 10 to the minus 12 while it's per square meter, and the answer is given in the seat belts represented by deep. We're gonna talk about the sound intensity level so that some intensity level beta is equal to 10 times the logarithms on base 10 off the intensity of the sound.