Question

The deepest part of the ocean in the world is Mariana trench in the Pacific Ocean it is 11000m deep.How long will it take for a sound transmitted by a ship, from above the trenches to be reflected.

Answer 1

d=11000m
speed of sound =1400m/s
v=2d/t
1400=22000/t
t=22000/1400
t=15.71 s

Answer 2

7.314seconds is taken