what the degree gonna be

I walked you through Example 16-2 where you had two identical cylindrical samples. Now we remove one of them and put a perfect thermal insulator there so all the generated heat will escape through the remaining cylindrical piece. In this case, what will be the temperature difference that you will see between the 3cm separated temperature measurement points? EXAMPLE 16-2 Measuring the Thermal Conductivity of a Material Qcond=kAxT1T2=kAxT In a certain experiment, cylindrical samples of diameter 5cm and length 10cm are used. The two thermocouples in each sample are placed 3 cm apart. After initial transients, the electric heater is observed to draw 0.4A at 110V, and both differential thermometers read a temperature difference of 15C. Determine the thermal conductivity of the sample