с 30° F A B 800 800 Dimensions in mm

2

Help me please

need to find Beta as well

Q1/A Prove that the volume of an FCC unit cell, Vc is; Vc = 16R³√2 B) Explain in general terms, why many polymers and some ceramic glasses have an amorphous or semicrystalline structure.

Q/ Calculate the theoretical density of chromium (Cr), when atomic weight = 52.00 (g/mol), crystal structure (BCC), Atomic radius = 0.125 (nm) * %D O 7.15 (g/cm3) O 7.19 (g/cm3) O 7.21 (g/cm3) O 7.17 (g/cm3)

The stiffness, S, of an atomic bond in a particular cubic material is 50 N/m and its centre to centre atomic spacing is 0.3 nm, what is its elastic modulus in GPa? Enter rounded integer value without decima places and without units. Hint: Stiffness = Force/change in atomic spacing

Give answer all questions with explanation please

Determine the type of dislocation and the definition based on Figure 2. A. An edge dislocation is created in a crystal by insertion of an extra half plane of the atom and the Burger vector is parallel to the edge dislocation. B. Screw dislocation can be formed in a perfect crystal by applying upward and downward shear stresses to regions of a perfect crystal separated by a cutting plane and the Burger vector is perpendicular to the dislocation line. C. Mixed type of dislocation, within the crystal the dislocation is edge and screw components. D. All the answer is incorrect. Shear Figure 2: Dislocation of metal

You are given the density of a metal as 3.03 g/cm³. You are advised the crystallographic structure is fcc, and the atomic mass is 28.1 g/mol. What is the atomic radius of the metal? O a. 0.14 nm O b. 0.10 nm O c. 0.11 nm O d. 0.16 nm