1. The problem statement, all variables and given/known data A copper bar with a cross sectional area of 4.40 cm2 and a length of 0.62 m has one end at 1 °C and the other end at 97 °C. Find the heat flow through the bar if the thermal conductivity of copper is 385 W/(m·K) 2. Relevant equations R = (λ*L)/A I = ΔT / R k = 1/λ R = resistance λ = thermal resistivity L = length of pipe A = cross sectional area I = thermal current ΔT = change in temperature k = thermal conductivity 3. My attempt So first I converted the area 4.40 cm2 into 0.044 m2. Then I converted the thermal conductivity given in the problem to thermal resistivity k = 1/λ λ = 1/k = 1/385 W/(m·K) = 0.00259 mK/W Using this value, the area, and the length from the problem, I used R = (λ*L)/A R = (0.00259 mK/W)(0.62 m) / 0.044 m2 R = 0.0366 K/W Now I plugged this R into the thermal current formula I = ΔT/R, where ΔT = 97 °C - 1 °C = 96 °C The ΔT is measured in Kelvin, but is still a difference of 96 units. I = 96K / 0.0366 K/W = 2622.95 W = 2622.95 J/s This is incorrect apparently. Does anybody know where I might have went wrong? Thanks!