Answered: The random arrangement of atoms in a…

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Mechanical Engineering

The random arrangement of atoms in a structure is known as crystalline structure. Select one: O True O False

Understanding Motor Controls

4th Edition

ISBN:9781337798686

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter44: Semiconductors

Section: Chapter Questions

Problem 4RQ

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

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The random arrangement of atoms in a structure is
known as crystalline structure.
Select one:
True
O False

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The orderly arrangement of atoms in a structure is known as crystalline structure. Select one: True False
Potassium (K) has the Body-Centered Cubic (BCC) crystal structure. The edge length is a = 0.533 nm. What is the linear density in atoms/nm along direction [011P Select one: a. 4.50 b. 6.37 O C. 3.18 d. 7.48 O e. 1.33 Europium has the Body-Centered Cubic (BCC) crystal structure shown in the figure below. The radius of the Europium atom is r= 0.204 nm. What is the planar density in atoms/nm in plane (20)? Plane (200)
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Which 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.
Help me please
3 Copper Unit Cell Uniqueness Here's a weird way to describe the structure of copper: Cu falls into the tetragonal crystal system with a = 0.256 nm, c = 0.362 nm = a√√2, and atoms located at 000 and. Its density is 8.94 g/cc at room temperature. (a) Draw a few adjacent units cells of the structure as described in this "weird" way. You should be able to see that there is a much more convenient way to describe the structure. What is it? (The point I wish to make is that there are many different unit cells that can be used to describe any given crystal, so we usually choose the one that is easiest to visualize.) (b) Calculate the radius of a copper atom using the above information. (c) Calculate the lattice parameter of the "better" unit cell of Cu.
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