A) For BCC iron, calculate the diameter of the minimum space available in an octahedral site at the center of the (010) plane. Assume that the iron atoms in the BCC structure are hard spheres that touch along the [111] direction, and the lattice parameter (a) of BCC iron is 0.2866 nm. (b) Compare the space available with the size of a carbon atom (radius 0.077 nm), and comment about the potential solubility of carbon in BCC iron in octahedral interstitial sites.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.