3- The material that atoms behave mostly like either positive or negative ions and are bound by coulumb force between them called * O Compositions O Ceramics Polymers Semi-conductors
Q: 2. Draw the directions in the cubic unit cell. A:[00 1]. B :[120]. C :[111]. D :[21 1]. 3. Draw the…
A: We will answer the first question since the exact one was not specified. Please submit a new…
Q: The structure shown below is stable. O True O False
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Q: 3- crystal structure. External surface O Foreign particles O dislocation 4- two non-metals O…
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Q: be 4.0E+20 m³. The electron and hole mobilities for this material are 0.38 and 0.18 m2/V-s,…
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Q: 4. What are the Archimedes' principle applications.
A: Given data What are the Archimedes' principle's applications.
Q: Ceramics have limited ductility because their bonds tend to be Directional. Nondirectional. O…
A: Ceramic materials generally brittle and shows very little ductility or plastic deformation under…
Q: Show the support reactions at point A for the piece next to the left which is in static equilibrium…
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Q: Arrange the level of covalent chain configuration from high to low strength. I. Network II. Linear…
A: Answer : D. I, III, IV and II The correct level of Covalent Chain Configuration is from High…
Q: An optical fiber for telecommunication is made of SiO2 glass (density = 2.20 Mg/m'). How many Si…
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Q: Nickel (Ni) has the Face-Centered Cubic (FCC) crystal structure shown in the figure below. The…
A: No. of atom on plane (110) =4×14corner+2×12face=1+1=2 atom
Q: What is the result of the system of converging forces in Figure (1)? ау 500N 200 N X 45 30 300 N…
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Q: Identify the wrong statement for the material properties in the following. O a. Depends on the…
A: Concept of material properties. In general the material properties depends on the physical and…
Q: Calculate the binding energy between the elements below: ELEMENT A: lonic charge= 3 Weight = 198…
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Q: 4- Single crystal materials have * O Two Crystal O Three Crystal O Many Crystal O One Crystal
A: Question:- Single crystal materials have ... Options:- Two Crystal Three Crystal Many Crystal…
Q: within a orthorhombic unit cell, sketch the following: [123] and [133]
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Q: This atom arrangement may cause metal brittleness. None of the above Hexagonal closed packed Body…
A: Given
Q: 2. Draw the directions in the cubic unit cell. A:[00 T]. B:[120]. C:[I11]. D:[21 T]. 3. Draw the…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: Vanadium has the Body-Centered Cubic (BCC) crystal structure shown in the figure below. The radius…
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Q: Define and give one example of a geometry that is coordinatively unsaturated
A: Coordinatively unsaturated A transition metal complex that possesses fewer ligands than exist in…
Q: 38- What behavior does a material containing covalent and ionic bonds not show? A) shows low heat…
A: In chemistry, a covalent bond is the inter-atomic connection that results from sharing of an…
Q: In the H atom, what is the correct order (arrangement) of energy levels O3s = 3p =3d 3s>3p>3d
A: in h atom , what is the correct order of energy level (c) 3s <3p< 3d is the right answer…
Q: Can you please tell me which ones are true and which ones are false ? a- Amorphous and…
A: Amorphous material Amorphous material is one kind of material in which there is no crystalline…
Q: 4- Two types of bonds are found in ceramics: Covalent and metallic Van der waals and ionic ionic and…
A: To find :- Coreect option
Q: What is the amount oT snear stress developed in the bolt connecting the two plates in the dlagram…
A: To find: Which type of bonding between atoms is characterized by the sharing of electrons between…
Q: find the de Broglie wave length for an electron with total energy E=6 eV and potential energy V= 3…
A: Total energy E = 6 eV Potential energy V = 3 ev De Broglie wavelength = ?
Q: X. The Van der Waals bond is a re charged molecules; the charge is Y. Materials having large bonding…
A: Handwriting.jpg
Q: omplete these senteñces 1- An Element that lost an electron is called.. 2- 3- 4- Mostly radioactive…
A: Hi and thanks for the questions. Since you have asked multiple questions, we will solve the first…
Q: In the electron arrangement of a calcium atom, how many electrons are in the second energy level?…
A: Given below is the electronic configuration of a calcium atom. It shows the energy levels and…
Q: 142) What property does a bonded material with an electron cloud not exhibit? a) Conductivity b)…
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Q: The unit cell has a = 5 A, b=S A, c= 3 A, a = 90, B 65 and y 54. The space lattice for this unit…
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Q: what Therm oelectric Principles? Write the solution. Word
A: Thermoelectric principle is the direct conversion of thermal energy or heat into electrical energy…
Q: The rod is supported by ball-and-socket joint D and cables AB, AC. Suppose that F = 800 N and x 6 m.…
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Q: The type of charge possessed by an electron is:
A: Negative
Q: When the chemical bonds are broken within the wood or coal, . energy is released. O Chemical O…
A: When the bond between atoms breaks, then chemical energy is released. Hence Option (A) is correct.
Q: The elastic strain in CU is due to 1) stretching of atomic bonds 2) breakage of atomic bends 3)…
A: Elastic strain is the range of strain values for an element at which the element can regain its…
Q: The material in which the atoms are arranged chaotically, is called A)malleable material…
A: (A) Malleable material: A material is considered the malleable material formed very easily by…
Q: 3.34 Within a cubic unit cell, sketch the following directions: (a) [101] (e) [1I] () [212] (b)…
A: Miller indices: It is a group of three numbers which is used to represent the orientation of a plane…
Q: Define the term free body diagram
A: FBD is a graphical illustration used to visualize the applied forces, reactions, moments etc. It is…
Q: Which of the following materials has the highest elastic modulus? O Nylon Diamond O Aluminium oxide…
A: Which of the following materials has the highest elastic modulus? Nylon Diamond Aluminium oxide…
Q: 6. Please indicate which structure belongs to metal, ceramic, polymer and glass ceramics: (a) (b)…
A: ● Metal has closed packed structures. ● Ceramic has crystalline structure ● Polymer is which having…
Q: 2- How many coulombs are represented by these amounts of electrons? (a) 6.482 x 1017 (b) 1.24 x 10'8…
A: (a) The number of electrons is . Multiply the number of electrons with the charge of the electron,…
Q: (a) Calculate the standard free energy change as a pair of electrons is transferred from succinate…
A: a. The standard free energy change as a pair of electrons is transferred from succinate to…
Q: Q2/ semiconductor at T, has conductivity of 2.5 x 106 s/m. number of electrons of 3x 105 Numbers of…
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Q: Copper (Cu) has the Face-Centered Cubic (FCC) crystal structure shown in the figure below. The…
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- 1. The bonds in those materials are cross- linked but they have a low cross linked density.The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine, and guanine). Because of the geometric shape of these molecules, adenine bonds with thymine and cytosine bonds with guanine. The figure (Figure 1) shows the thymine- adenine bond. Each charge shown is te, and the H-N distance is 0.110 nm1. Which material is a better conductor of electricity? (a) Metals (b) Ceramics (c) Polymers (d) composite 2. Which material tends to present lower density? (a) Metals (b) Ceramics (c) Polymers (d) composite 3. Electron sea exists in (a) Hydrogen bond (b) lonic bond (c) Covalent bond (d) Metallic bond 4. Burger's vector changes with (a) Kind of dislocation (b) Length of dislocation (c) Both kind and length of dislocation (d) None 5. Metals are malleable and ductile because (a) Metals can be shine (b) Metals produce sound (c) Layers of metal atoms can slip over each other (d) Opaque. 6. Effective number of atoms in a face centered cubic (FCC) unit cell is equal to (a) 4 (b) 1 (c) 8 (d) 2 7. Lead is a metallic crystal having a structure. (a) FCC (b) ВСС (c) HCP (d) Sc 8. Amorphous solids have structure. (a) Regular (b) Linear (c) Irregular (d) Crystal 9. Percentage of free space in a body center cubic (BCC) unit cell is. (a) 30 (b) 32 (c) 28 (d) 20 10. Fiberglass is an example of (a)…
- 1. The following questions concern two hypothetical materials, R for the red curve and B for the blue curve, (see figure below) showing the net interatomic forces as a function of interatomic separation. (6") a) Which material will have a higher modulus of elasticity, and why? b) Which material will have a higher melting point, and why? c) Which material will have a larger coefficient of thermal expansion, and why? Hint: You can integrate graphically. ro Separation ForceIncreasing the temperature of a semiconductor breaks covalent bonds. For each broken bond, two electrons become free to move and transfer electrical charge. What fraction of the total valance electrons are free to move and what fraction of the covalent bonds must be broken in order that 5×1015 electrons conduct electrical charge in 50 g of silicon?4- Si +P is called ...semiconductor 5.Ceramic has low electrical conductivity because... 6.Mean stress in fatique equal to S
- An optical fiber for telecommunication is made of SiO2 glass (density = 2.20 Mg/m'). How many Si atoms and how many O atoms are present per millimeter of length (L=1 mm) of a fiber 10 um in diameter (d=10 mm)? Given: M(Si)=28.09 g/mole M(O)=16 g/mole Avogadro's Number: AN = 0.6203 (10)24Which of the following are true regarding crystalline and non-crystalline materials at the atomic scale? Select one or more: a. Crystalline materials show no long-range order b. There are an infinite number of crystal systems and lattices possible C. Density of packing is higher for crystalline materials d. Bond energy is lower for noncrystalline materials Materials which are not crystalline are referred to as amorphous Bond length is shorter for crystalline versus noncrystalline materials e.Which of the following statements are true? Select one or more: a. Dislocations and defects make thermal transfer easy due to plastic deformation b. Starting at room temperature, the heat conductivity of ceramics goes generally up with increasing temperature c. Starting at room temperature, the heat conductivity of ceramics goes generally down with increasing temperature d. Dislocations and defects make thermal transfer difficult due to phonon scattering e. Heat transfer in solids occurs mainly by waves of atoms vibrating f. Heat transfer in solids occurs mainly by phonons
- The random arrangement of atoms in a structure is known as amorphous structure. Select one: True FalseFor APF, Which one of the following is the assumption a. The atoms overlap b. The atoms are rigid cubes c. The atoms do not overlap d. The atoms are not rigid spheresFactors influence crystal structure for ionic materials What factors influence crystal structure for covalently bonded materials