Question

If a train is 100 kilometers away, how much sooner would you hear the train coming by listening to the rails (iron) as opposed to listening for it standing by the track? In other words, how much faster will the sound travel through the iron rails than through the air? Assume the air temperature is 0°C.

Sound will reach you --- seconds sooner.
0
15
280
28

Answer 1

@Callisto

Answer 2

In air at 0°C, the speed of sound is 331 m/s.
In iron, the speed of sound is 5950 m/s.

How long does it take sound to travel 100 km through each of these media?

Answer 3

thanks:))