Question

I know the answer, I just want to know the process on how to get there, please!
A girl claps her hands 1,100 meters from a wall. Calculate the air temperature if she hears an echo 6.2 seconds later.
Thank you!

Answer 1

in 6.2 sec sound travels 2,200 meters
so you can work out the speed of sound

then you have to use the formula for speed of sound
\[a=\sqrt{\gamma R T}\] (a is the speed of sound, T is the temperature, \(\gamma \) and R are constants)