Ultrasound from the seabed with a depth of ~ 1.5 km was received in 2 s. What is the speed of propagation

| April 10, 2021 | education

Ultrasound from the seabed with a depth of ~ 1.5 km was received in 2 s. What is the speed of propagation of ultrasound in seawater?

It is known from the problem statement that the sea depth is h = 1.5 km = 1500 m, which means that ultrasound during echolocation of this depth had to overcome the path: S = 2 ∙ h = 2 ∙ 1500 = 3000 (m) moving back and forth. In addition, ultrasound from the seabed was received at t = 2 seconds. To determine what the speed of propagation of ultrasound in seawater is equal to, we will use the definition of the concept of the speed of uniform motion: v = S: t. Let’s substitute the values ​​of physical quantities into the formula and make the calculation: v = 3000 m: 2 s = 1500 m / s.
Answer: The speed of propagation of ultrasound in seawater is 1500 m / s.



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