Question: An apparatus to measure the thermal conductivity of a metal (called a “conductometer”) consists of a round copper bar A heated by a steam jacket ….

Instructions

An apparatus to measure the thermal conductivity of a metal (called a “conductometer”) consists of a round copper bar A heated by a steam jacket B at one end and cooled by coils C carrying water at ther other. The heat conducted along the copper is removed by the water (specific heat 4186 J kg^-1 C^-1) Two thermometers T₁ and T₂ are inserted in small holes in the copper 2.0 cm apart. The temperature difference between T₁ and T₂ is 10 C when water flows through the tubing at 50 cm³/min and enters at a temperature of T₃= 10 C and leaves at a temperature T₄ of 27.3 C. The diameter of the bar is 2.0 cm. Find the thermal conductivity of copper.