A 115-m telephone wire has a mass of 600 gram. A 1.5 m long segment of this wire is used to suspend a ball of m = 2.1 kg mass, see the picture below. What is the speed of wave on the horizontal section of the wire which has a length of L = 0.8 m? L b 0 lg 1 The speed of wave, v1 = Units . What is the speed of wave on the vertical section of the wire? The speed of wave, v2 = Units . What is the linear mass density of the wire? The linear mass density, 7\\ = Units