A steel wire of length 5 meter and radius 0.3 millimeter is knotted to another steel wire of length 5 meter and radius 0.1 millimeter. The wires are stretched with a tension of 150 Newton. Find how long does a transverse wave pulse take to travel the distance of 10 meter from the beginning of the first wire to the end of the other? The density of steel is 7.8 x 103 kg/cubic meters.