1. The problem statement, all variables and given/known data Write down the expanded form of the stress power SigmaijDij in the case of a general three dimensional state of stress, a two-dimensional state of stress, a uniaxial state of stress, a state of simple shear , and a spherical state of stress. 2. Relevant equations 3. The attempt at a solution Ok. I am not entirely understanding what is being asked here ( potentially because we may not have covered this yet. The problem belongs to our chemical engineering heat transfer course. We are on our third lecture) Here is what I am interpreting from what I looked up in a random solid mechanics book. Stress power = stress tensor of the object *stretching tensor I assume that for each given object, we are to write out the stress tensor for different states. I have never dealt with a stretching tensor before. If anyone could offer any insight on how to even start this problem or a good resource to look into I would appreciate it.