Please explain:
Using 334 m/sec as the speed for sound and assuming light travels so fast as to be considered instantaneous for this problem, what is the time delay between seeing a flash of lightning and hearing its thunder when the lightning strikes 3 km away?
2007-01-20 16:04:15 · 3 answers · asked by GSU 1 in Science & Mathematics ➔ Physics
9 seconds.
The distance divided by the speed of sound per second. Comes to 3 seconds per km.
2007-01-20 16:13:35 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The time taken by sound to travel a distance of 3km=3000 m is given by = 3000/334 s =8.98 s. So it takes 8.98 s to reach the observer.
and if light reaches the observer instantaneously,
then the time delay between seeing a flash of lightning and hearing its thunder =8.98s Answer
2007-01-21 00:26:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
8.982 seconds or about 9 seconds.
simply devide the distance by thee speed since they are both already in metric units.
2007-01-21 00:14:01 · answer #3 · answered by nyxcat1999 3 · 0⤊ 0⤋