Question

His friend stood on a distant hill.
Galileo flashed his lamp and started his clock at the same moment.
When his friend saw the light, he flashed his lamp back towards Galileo.
When Galileo saw the flash, he noted the time taken on his clock.
Unfortunately, this method didn't work. This was because the light travelled
very quickly from one hill to the other. It took only a tiny fraction of a second.
It took much longer for his friend to see the light and react to it, flashing his
own lamp
a This method would work quite well if Galileo wanted to measure the
speed of sound. If his friend was 3000 m away, how long would the sound
take to travel between the two hills? The speed of sound is about 300 m/s.​

Answer 1

Answer:

it is so long question