A 180 g wire is held under a tension of 216 N with one end at x = 0 and the other at x = 15.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 15.0 m. At time t = 37.9 ms, pulse 2 is sent along the wire from the end at x = 0. At what position x do the pulses begin to meet?