A 4.28 m deep well acts as a closed pipe. When wind blows
across the top, what is the
fundamental frequency it creates?
(Speed of sound = 343 m/s)
(Unit = Hz)

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.