sábado, 7 de septiembre de 2013

Science Homework

Richard was at the canyon and he shouted his name down the canyon , 8 seconds later he heard his echo.
How deep is the canyon?

2722.32

Why?
If we want to know how deep is the canyon we have to calculate the distance (speed times time).
for the speed we have to know what is the speed of sound (340.29 m/s) and multiply it per 8 (the time)

340.29 times 8= 2722.32 m

So the canyon is 2722.32 m