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In the figure, an aluminum wire, of length L1-1.26x103 cm, cross-sectional area 1.00x102 cm2, and density 2.60 g/cm3, is joined to a steel wire of density 7.80 g/cm3 and the same cross-sectional area. The compound wire, loaded with a block of mass m 5.00 kg, is arranged so that the distance from the joint to the supporting pulley is L2 1.09x103 cm Transverse waves are set up on the wire by an external source of variable frequency; a node is located at the pulley L1- L2 Alum inium Steel Find the lowest frequency that generates a standing wave having the joint as one of the nodes. Submit Answer Tries o/99 How many nodes are observed at this frequency? Submit Answer Tries 0/99

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