Question 7 (4 points) You tie a buoy to a string and attach it to a motion detector device which measures the distance the buoy moves. The device is placed in the ocean where you observe steady waves with 1.5 m amplitude. The detector registers that the buoy moved by a total distance of 24 m after 60 seconds. What is the period of the ocean waves? 07.5 s 2.5 S 5 s 15 s