Question: Briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why:             (a)  Molecular weight             (b)  Degree of crystallinity

Q: What are the different standard data sources that are available to find the properties of materials

A: The properties of a material for instance, the chemical or the physical properties are determined by…

Q: Which polymer group is in engineering thermoplastics? A High density polyethy le ne,…

A:

Q: Density and viscosity fatty acid at 40 degree celcius

A: Various researches and studies have been conducted continuously to calculate density and viscosity…

Q: consider that a polystyrene (PS) has the molar mass distributions shown in the table below.…

A: The numerical fraction and the mass fraction along with the corresponding molar mass is given in the…

Q: Describe the process by which polyethylene molecules resist elongation when an external load is…

A: Polymer, this word itself can define what is polymer. 'Poly' means many and 'mer' means parts. When…

Q: Derive the dimension ratio c/a for regular HCP crystal.

A: HCP crystal Lattice or Hexagonal Closed Packing Lattice is shown below. It is said to find the…

Q: About precipitation and dispersion hardening, answer: (a) Explain what the precipitation process…

A: Dear Subscriber! The three questions posted here require independent analysis/calculations. As per…

Q: Explain how a molecule that contains polar bonds can be nonpolar.

A: Polarity is the segregation/separation of electric charge resulting in a molecule or its chemical…

Q: 5. Physical properties of the formation crude oil includes volume coefficient and viscosity.

A: The physical properties of crude oil vary according to its composition, the relative abundance of…

Q: Can you comment on the effect of molecular weight on tensile strength and viscosity. Give me…

A: The tensile strength of polymer is the maximum force or weight that the polymer is going to be…

Q: The outermost shell of an atom is called as the shell.

A: In a chemical element, an atom is the smallest particle of matter. An atom consists of a central…

Q: While iron and its alloys have a limit on why fatigue strength, in non-ferrous materials there is no…

A: Ferrous and Non-ferrous material has different mechanical behavior.

Q: Explain the role of the back surface field in solar cells and how to form a BSF layer in silicon…

A: To 1. explain the role of back surface field (BSF) layer in solar cells 2.  how to form a BSF layer…

Q: Derive the dimension ratio cla for regular HCP crystal. DO NOT USE the atomic packing factor.

A: In the HCP system, the basal plane has a hexagonal or triangular lattice with lattice parameter a.…

Q: Which of the following is not correct statement? O a. Matrix is the major load carrier in…

A: To choose the option that is not correct about composites/Al alloys

Q: 27.) An extra plane would be inserted inside the crystal in a/an a) Edge dislocation b) Screw…

A: In the crystal lattice structure there are different defects are present in the lattice structure.…

Q: A sample of aluminum foil contains 8.50 X 10^23 atoms. What is the mass of the foil?

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Q: Which of the following are add to the polymers to manufacture reinforced polymer composite…

A: which of the following are added to become reinforced polymer composite.

Q: consider the spherical nanoparticles of copper with diameter of 10 and 100nm. a) Calculate the…

A: Objective is to find the number of atoms at the grain boundaries for a typical grain boundary…

Q: How can we remove the material reversibly adsorbed on carbon or other adsorbents?

A: When particles are diffused on a solid’s surface, the phenomenon is known as adsorption. The solid…

Q: Use diagrams to explain the below: 1- Explain the microstructure of high density polyethylene…

A: HDPE is a form of polyethylene, which is the most popular plastic, accounting for more than 34% of…

Q: why thermal conductivity is higher for crystalline materials than for amorphous

A: Components that have regular and ordered arrays of atoms that are held together by intermolecular…

Q: How diffusivity is dependent on temperature and pressure

A: gIVEN THAT we have to write how diffusivity is dependent on temperature and pressure

Q: The figure shows the stress strain graph for 4 materials: 1) the most ductile is? 2) the most…

A: 1) 'C' is the most ductile.More the area under the curve more the ductile. 2) 'B' is the most…

Q: Which of the following polymer have higher Young's Modulus? O a. Plastic b. Elastomer O c. Protein O…

A: Fibers are known for their stiffness. Young's modulus is a measure of substance stiffness.

Q: Pick a statement which incorrectly describes steel ? A. It contains carbon atoms in the holes of its…

A: Steel is an alloy of iron with typically a few tenths of a percent of carbon to improve its strength…

Q: (a) Make a diagram of the polymerization process in the formation of polyacrylonitrile. (b) What…

A: Step (a): In the preparation of polyacrylonitrile, acrylonitrile is used as a monomer that undergoes…

Q: Calculate the ionic packing factor of sodium chloride. Magnesium oxide has a sodium chloride crystal…

A: Ionic radius of Na = 0.98 angstrom  Ionic radius of Cl = 1.8angstrom. In FCC NaCl, there are 4…

Q: Which of the following statements about recrystallisation of metals are true? Select one or more: a.…

A: a) False, Recrystallization helps to enhance ductility, not plastic deformability b) True, the cold…

Q: For polymer rheology, Please answer the below questions briefy. i Cue Neut 'e lou

A:

Q: Q1/ A: Write the mathematical relation for (h 1- Shear stress and strain are proportional to each…

A:

Q: State which of the following list of properties is most descriptive of a metallic solid. High…

A: Here good conductor of melting solids are example of ionic solid.  Low melting point, non-conductor…

Q: Explain briefly the difference between crystalline and amorphous regions in a polymer.

A: Introduction: Polymers: A polymer is a big molecule or a macromolecule which essentially is a…

Q: Why phase inversion is a major stability issue in emulsions

A: Emulsions are very much important in many fields such as preparation of cosmetics, it is also used…

Q: Calculate the mass defect, the binding energy and binding energy per nucleon for Lithium-6

A: Mass defect In a atom there are neutrons, protons and electrons. It can be seen by careful…

Q: Compare the thermal conductivities of metals, ceramics and polymers based on structure-property…

A: SolutionStep 1 : (i) Thermal conductivity of Metal depend upon the electrons and electrical…