Compute the density of the fictional metal Vibranium, if its atomic weight is 182 g/mol, its atomic radius is 2.2 angstroms, and the metal packs with a BCC structure.

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

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way