A particular unit cell is cubic with ions of type A located at the corners andface centers of the unit cell and ions of type B located at the midpoint ofeach edge of the cube and at the body-centered position. The ions contribute to the unit cell in the usual way (1/8 ion contribution foreach ion at the corners, etc.). A) How many ions of each type are there per unit cell?
B) Describe this structure as a lattice and a basis.
C) What is the coordination number of each ion?
D) What is the name commonly given to this crystal structure?

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

On a average work day more than work place firs are reorted

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.