Answer:
Correct answer: t = 5 seconds
Explanation:
Given: sonar pulse velocity v = 1,500 m/s and distance from sunken ship
d = 3,750 m
The sonar pulse must go twice the distance to the ship
2 d = v · t => t = 2 d / v = 2 · 3,750 / 1,500 = 7,500 / 1,500 = 5 seconds
God is with you!!!
Answer: It will 5 seconds fir the wave to return
Explanation: Speed is expressed as v=d/t if we derive this to find t:
t=d/v =3750m/ 1500m/s = 2.5 s note it the time required for the wave to reach the sunken ship. So multiply it by 2 to to have the final time to reach back on the source which takes 5 s.
