Asteel string has a length of L = 39 cm and a mass of m = 4.3 g. If the string is under a tension of 1.5 lb, what is the speed of waves on the string? The speed of wave, v1 = Units . If we keep the same material and geometrical parameters of the string, but double the tension, what is the new speed of wave on the string? The speed of wave, v2 = Units . If we keep the same tension, the same material and cross section area of the string, but double the length of the string, what is the new speed of wave on the string? The speed of wave, V3 = Units . If we keep the same tension, the same material and length of the string, but double the radius of the cross section of the string, what is the new speed of wave on the string? The speed of wave, V4 = Units