At a point in the structural member, the stresses are represented as σx=80 mpa, σy=40 mpa and τz=30 mpa. determine (a) the magnitude and orientation of the principal stresses and (b) the magnitude and orientation of the maximum shearing stresses and associated-normal-stresses. represent the stress tensors in matrix form and draw mohr's circle to show all the stresses.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

What precautions should you take to prevent injuries when dealing with heavy loads?

Fluids at rest possess no flow energy. a)- true b)- false