The kind of wave reflected and the amount of energy transmitted depend on the properties of the material on either side of the boundary. A similar reflection occurs when a sound wave confined to the i...The kind of wave reflected and the amount of energy transmitted depend on the properties of the material on either side of the boundary. A similar reflection occurs when a sound wave confined to the inside of a tube encounters the open end of a tube where the air can move freely. Click the 'Heavy to Light' button, run the simulation and describe what happens when a pulse goes from a heavy string to a light string.