Hey guys,
Got a quick question related to sound.
"A stone is dropped in a mine shaft 200 meters deep. If the temperature is 23 degrees Celcius, how much time will it take to hear the stone hitting the bottom from when it was released?"
Formula used in lesson:
velocity of sound= 332 + 0.6(Temperature)
+130511 The time it takes to drop is given by
-200 = -4.9t2 divide both sides by -4.9
200/4.9 = t2 take the positive square root
t = 6.39 sec
The time it takes the sound to return is given by
D / R = T ..... so.....
200/[332 + 0.6(23)] = .58 sec
So ( 6.39 + .58) = 6.97 sec
