12.14 A helical coil spring with D = 50 mm and d = 5.5 mm is wound with a pitch (distance between corresponding points of adjacent coils) of 10 mm. The material is ASTM A227 cold-drawn carbon steel. If the spring is compressed solid, would you expect it to return to its original free length when the force is removed?

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

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.