1. How long will it take a sound to travel 21.0 m for the conditions of Problem 1?
2. How long will it take a sound to travel through 7500 m of water at 25°C?
3. A sound wave is transmitted through water from one submarine, is reflected off another submarine 15 km away, and returns to the sonar receiver on the first submarine. What is the round-trip transit time for the sound wave? Assume that the water temperature is 25°C.
4. A sonar receiver detects a reflected sound wave from another ship 3.52 s after the wave was transmitted. How far away is the other ship? Assume that the water temperature is 25°C.