Final answer:
It takes approximately 2.07 seconds for an undersea sonar pulse to travel 3 km, given that the speed of sound in seawater is about 1450 m/s.
Step-by-step explanation:
Calculating the Time for an Undersea Sonar Pulse to Travel 3 km
To calculate the time it takes for an undersea sonar pulse to travel a certain distance, you need to know the speed of sound through the medium, which is water in this case. The speed of sound in sea water is typically around 1450 meters per second (m/s). We can use the formula:
Time = Distance / Speed
To calculate the time it would take for the sonar pulse to travel 3 kilometers (3000 meters), we simply divide the distance by the speed:
Time = 3000 m / 1450 m/s
The result will be the time in seconds it takes for the sonar pulse to travel 3 km. Let's calculate:
Time = 3000 m / 1450 m/s ≈ 2.07 seconds
Therefore, it will take roughly 2.07 seconds for an undersea sonar pulse to travel a distance of 3 kilometers.