The density of an unknown polymer is 1.875 g/cm³ with a % crystallinity of 50%. If the density when totally amorphous is 1.5 g/cm³, calculate the density when totally crystalline. Also calculate the density when the % crystallinity is 87%.

We would like to produce a transparent canopy for an aircraft. If we were to use a traditional window glass canopy, rocks or birds might cause it to shatter. Design a material that would minimize damage or at least keep the canopy from breaking into pieces

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.... is not a,characteristic property of a ceramic material. 1) Low compressive strength 2) High compressive strength 3) Low tensile strength 4) Low fracture toughness

Answer part c

Given the following values, calculate their relative compactness ydmax=2,250 Kg/cm?, ydmin=1,120 Kg/cm?, ydnat=1,635 Kg/cm?,

(1) 2% ThO₂ is added to Ni. The density of ThO₂ is 9.69 g/cm³. Each ThO₂ particle has a diameter of 100 nm. How may particles can be found per m³ in the composite.

Answer whats in the image, please and thank you

Nylon 6,6 is a thermoplastic polymer with high mechanical strength, high resistance to chemical environments, and good stability under heat. Therefore, it is well suited to be used in 3D structural objects. A cylindrical nylon 6,6 pipe is made by injection molding. The pipe is 1 m long with an outer diameter of 8cm, and a thickness of 2mm. The crystallinity of the pipe is 25%. The density and associated percent crystallinity for two nylon 6,6 samples are measured as below:     ρ(g/cm3) crystallinity (%) 1.190 67 1.155 44   If the degree of polymerization is 500, calculate the number of chains in the pipe. (Assume the chains are equal in length).

The yield point for a brass alloy that has an average grain diameter of 50 micrometers is 120 MPa.