Waves on a swimming pool propagate at 0.720 m/s. you splash the water at one end of the pool and observe the wave go to the opposite end, reflect, and return in 31.0 s. how far away is the other end of the pool?

11.16 m

Explanation:

total distance traveled by the wave = speed * time

                                                            = 0.720 m/s * 31.0 s

                                                            = 22.32 m

Since this is an echo back to the starting point then the length of the swimming pool must be half of the distance traveled.

length of swimming pool  =  22.32 m÷2 = 11.16 m

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