Question

If you were on a ship above Mariana trench and send a signal straight down to water how long it will take to reach you (speed of sound in water -1500m/s)

Answer 1

Answer:

Depth of Mariana trench is 10994m . So signal have to travel 10994 × 2 = 21188 m to reach ( Going + coming back )

And it will take

$\frac{21188}{1500} = 14.125 \: secs$

To reach