An oil – tanker explodes on the surface of the sea. At that instant, an aircraft and a submarine were present vertically above and below the oil – tanker respectively at equal distances from it. Find the ratio(air:water) of the time taken by sound waves to reach them. (Speed of sound in air = 340 ms−1 and speed of sound in seawater= 1360 ms−1)

An oil – tanker explodes on the surface of the sea. At that instant,

1.	An oil – tanker explodes on the surface of the sea. At that instant, an aircraft and a submarine were present vertically above and below the oil – tanker respectively at equal distances from it. Find the ratio(air:water) of the time taken by sound waves to reach them. (Speed of sound in air = 340 ms−1 and speed of sound in seawater= 1360 ms−1)
Answer» An oil – tanker explodes on the surface of the sea. At that instant, an aircraft and a submarine were present vertically above and below the oil – tanker respectively at equal distances from it. Find the ratio(air:water) of the time taken by sound waves to reach them. (Speed of sound in air = $340 m s^{- 1}$ and speed of sound in seawater= $1360 m s^{- 1}$ )