A woman is swimming when she hears the underwater sound wave from an exploding ship across the harbor. She immediately lifts her head out of the water. The sound wave from the explosion propagating through the air reaches her 4.00 s later. How far away is the ship? Assume that the water temperature is 25°C and the air temperature is 23°C.

Question

Velocity of air is 345.03m/s and velocity of water is 1500m/s

I did d=Va (t) = 345.03m/s (4.0s)= 1380.12m

Then I don't know where to go from here.

Answer 1

but all it asked for was d = 1380 meters

Answer 2

d = 4 /(1/Va -1/Vw)

Answer 3

= 1818 m

Answer 4

d = 4 /(.00289 - .000667)
= 4/.0022
= 1818 m

Answer 5

I did this all out for you earlier. Scroll down.