Solution Found!
Unless indicated otherwise, assume the speed of
Chapter 16, Problem 7E(choose chapter or problem)
Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. A submerged scuba diver hears the sound of a boat horn directly above her on the surface of the lake. At the same time, a friend on dry land 22.0 m from the boat also hears the horn (?Fig. E16.7?). The horn is 1.2 m above the surface of the water. What is the distance (labeled “?”) from the horn to the diver? Both air and water are at 20o C.
Questions & Answers
QUESTION:
Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. A submerged scuba diver hears the sound of a boat horn directly above her on the surface of the lake. At the same time, a friend on dry land 22.0 m from the boat also hears the horn (?Fig. E16.7?). The horn is 1.2 m above the surface of the water. What is the distance (labeled “?”) from the horn to the diver? Both air and water are at 20o C.
ANSWER:Solution 7E Speed of sound in air v = 344 m/s The friend is 22 m away from the boat. Therefore, time taken by the sound to reach the friend from the boat is t = 22/344 s t = 0.064 s The speed of sound in