Question

A sonar echo returns to a submarine 1.20 s after being emitted. What is the distance to the object creating the echo? (Assume that the submarine is in the ocean, not in fresh water.)

a) 171.5 m
b) 343.0 m
c) 686.0 m
d) 1,029.0 m

Answer 1

The distance to the object creating the echo is 1,800 m.

Step-by-step explanation:

To calculate the distance to the object creating the echo, we can use the formula:

Distance = Speed x Time

In this case, the speed of sound in water is approximately 1,500 m/s. So, using the given time of 1.20 s, the distance to the object is:

Distance = 1,500 m/s x 1.20 s = 1,800 m

Therefore, the correct answer is not provided in the options given. The actual distance to the object creating the echo is 1,800 m.