One end of an iron rod is placed in a fire where the temperature is 499∘C, and the other end is kept at a temperature of 25∘C. The rod is 1.2 m long and has an area of 5.0×10–3 m2. Ignoring the heat lost along the length of the rod, find the amount of heat conducted (in J) from one end of the rod to the other in 5.0 s. Take the coefficient of thermal conductivity of iron as 80 J/(s.m.C∘).

One end of an iron rod is placed in a fire where the temperature is 49

1.	One end of an iron rod is placed in a fire where the temperature is 499∘C, and the other end is kept at a temperature of 25∘C. The rod is 1.2 m long and has an area of 5.0×10–3 m2. Ignoring the heat lost along the length of the rod, find the amount of heat conducted (in J) from one end of the rod to the other in 5.0 s. Take the coefficient of thermal conductivity of iron as 80 J/(s.m.C∘).
Answer» One end of an iron rod is placed in a fire where the temperature is $499^{\circ} C$ , and the other end is kept at a temperature of $25^{\circ} C$ . The rod is $1.2 m$ long and has an area of $5.0 \times 10^{- 3} m^{2}$ . Ignoring the heat lost along the length of the rod, find the amount of heat conducted (in $J$ ) from one end of the rod to the other in $5.0 s$ . Take the coefficient of thermal conductivity of iron as $80 J / ({s.m.C}^{\circ})$ .