+2.0 -0.0 An engineer joined a rod in which 50 cm is copper and 100 cm is steel from end to end together. Both have the circular cross-section with diameter 3 cm. If the free end of copper and steel are maintained at the temperature 100°C and 0°C respectively. Determine the temperature of the copper-steel junction. (Assume the thermal conductivity of copper and steel are 386 J/m - 5-°C. 46 J/m - 5-°C respectively) 50 cm 100 cm 100°C Copper Steel 0°C