You put one ear on a steel railroad track while your friend a distance of 248 m away taps on the rail with a stone.

You put one ear on a steel railroad track while your friend a distance of 248 m away taps on the rail with a stone. How much sooner do you hear the sound through the steel rail than through the air where the speed of sound is 344 m/s at 20 oC? Hint: Calculate the speed of the wave in the two media and then take the difference between the two times

8322373Q. You put one ear on a steel railroad track while your friend a distance of 248 m away taps onthe rail with a stone. How much sooner do you hear the sound through the steel rail than...