1. The problem statement, all variables and given/known data I was wondering why there is such a disparity between thermal conductivty and how they act in the real world. Ex. If if have 3 cups filled with hot water. The 3 cups are made of glass, plastic and metal. The metal will obviously have way higher thermal conductivity compared to the glass and plastic cups. But the temp. goes down slowly in all 3 cups and the rate that the temp. goes down. between the 3 cups are similar. The metal will drop in temp. faster than the other 2 but not that much faster. I was wondering why 2. Relevant equations No Equations 3. The attempt at a solution Said in 1.