a person shouted at the surface of a well abd heard his echo clearly after 0.3seconds calculate the distance between the person and surface of water in the well​
The time taken for sound to travel from the surface to the bottom of the well and back up to the surface is twice the time for the echo to be heard, so the total round trip time is 0.6 seconds.
We know that the speed of sound in air is approximately 343 meters per second.
So, the distance traveled by sound from the surface of the well to the bottom and back to the surface can be calculated as:
distance = speed x time
distance = 343 m/s x 0.6 s
distance = 205.8 meters
However, this distance is for the round trip, so we need to divide by 2 to get the distance from the surface of the water to the person:
distance = 205.8 m / 2 = 102.9 meters
Therefore, the distance between the person and the surface of water in the well is approximately 102.9 meters.