1. The problem statement, all variables and given/known data A block of material with a cross sectional area of 15cm^2 and length of 8cm is at hand. A temperature difference of 30degrees is established and maintained across the block. Find the rate of heat flow through it if the material is wood (K = 0.08Js-1m-1C-1) 2. Relevant equations P = KA(change in T)/L 3. The attempt at a solution P is watts. I converted area and length into meters. Everything is given, all i need to do is plug in the values. I did that and I get 4.5 Watts. The answer in the back of the book is 5.6W. Can someone do the calculation and confirm it with me? Either it's an error in the book or I'm missing something. THANKS!