1. The problem statement, all variables and given/known data Consider the following three solid object all made of the same material; 1) Cube of edge length r 2) Sphere of radius r 3) Hemisphere of radius r All object are maintained at a temperature 350K in an envorinment at temperature 300K. Rank the objects according to the net rate at which they exchange thermal radiation with the environment. Justify for full marks. 2. Relevant equations 3. The attempt at a solution Im not sure whether to list them simply in order of surface area or not??? Is there something else I should be considering? Cheers.