What is one experiment that has been done in the manufacturing

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

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?