These are types of design Invariant Original Abduction Variable
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A: Option D is correct.
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A: The velocity of the block: V = 8.94 m/s
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A: Given:a=0.34gu=4.2 m/s
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A: The radial acceleration of the collar: arad = -969.334 mm/s2
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Q: Example problem of reheat cycle
A: given; Example problem of reheat cycle
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- Which type of bonding between atoms is characterized by the sharing of electrons between two or more atoms? Covalent Ionic Metallic Van Der Waals Please answer the question in the image (explantion not needed)Chemistry Consider FCC copper. If bond energy per atom is 5.62 × 10-19 J, and its atomic radius is 0.128 nm, the surface energy for (100) plane will beIncreasing 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?
- Explain the main postulate of the VSEPR model. List the five base geometries (along with bond angles) that most molecules or ions adopt to minimize electron-pair repulsions. Why are bond angles sometimes slightly less than predicted in actual molecules as compared to what is predicted by the VSEPR model?142) What property does a bonded material with an electron cloud not exhibit?a) Conductivityb) Heat conductionc) Toughnessd) Ductilitye) An opaque appearance 143) Which have equal and oppositely charged forces?A) DipoleB) metalC) van der waalsD) hydrogenE) london 144) What is Frenkel error?A) atomic vacuumB) displaced ionC) intermediate atomD) ion pair spacingE) slipIn thermal conduction in ceramics and metals, which of the following statements are true? Select one or more: a. Phonons can have arbitrarily high and low energy b. A component of thermal energy is transmitted via phonons c. Phonons are a form of vibrational energy d. Phonons are amplified and strengthened by interaction with lattice defects e. Phonons are scattered and heat transfer reduced with interaction with lattice defects.
- In copper, what percentage of the volume change which occurs as the specimen is heated from room temperature to its melting point is due to the increased vacancy concentration, assuming that the vacancy concentration is just below the melting point (1083 oC) is 10-4. Given: Assume that the linear thermal expansion coefficient of copper is 16.5×10-6 K-1 over the whole temperature range.1. Is there a difference in packing (coordination number) between these two types (FCC and HCP) of structures? 2. Look at the two structures. A small difference in arrangement of atoms causes a dramatic difference in the properties of FCC ductile metals and HCP brittle metals. Can you see it? Try to draw the differences (You can draw the 3-layers separately):On the basis of ionic charge and ionic radii given in Table 3.4, predict crystal structures for the following materials:a. CsIb. NiOc. KId. NiS
- Metallic Crystal Structures1. For the HCP crystal structure, show that the ideal c/a ratio is 1.633. 2. Show that the atomic packing factor for HCP is 0.74.Discuss 1st brillouin zone of Sc , Bcc and fcc lattices.The only alkali metal halides that do not adopt the NaCl structure are CsCl, CsBr, and CsI, formed from the largest alkali metal cation and the three largest halide ions. These crystallize in the cesium chloride structure (shown here for CsCl). This structure has been used as an example of how dispersion forces can dominate in the presence of ionic forces. Use the ideas of coordination number and polarizability to explain why the CsCl structure exists.