March 24, 2008
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Closed Book and Closed Notes. (35 points)
1. (5 points)
Explain replica molding process. Can you build three dimensional str
16.1 The mechanical properties of cobalt may be improved by incorporating fine particles of tungsten
carbide (WC). Given that the moduli of elasticity of these materials are, respectively,
9.1 Consider the sugarwater phase diagram of Figure 9.1.
(a) How much sugar will dissolve in 1000 g of water at 80C (176F)?
(b) If the saturated liquid solution in part (a) is cooled to 20C (68
MECHANICAL PROPERTIES OF METALS
Concepts of Stress and Strain
6.1 Using mechanics-of-materials principles (i.e., equations of mechanical equilibrium applied to a freebody diagram), derive Equations 6.4a and 6.4b.
THE STRUCTURE OF CRYSTALLINE SOLIDS
3.1 What is the difference between atomic structure and crystal structure?
Atomic structure relates to the number of protons and neutrons in the nucleus of an at
ATOMIC STRUCTURE AND INTERATOMIC BONDING
Electrons in Atoms
2.1 Cite the difference between atomic mass and atomic weight.
Atomic mass is the mass of an individual atom, whereas atomic weight is th
IMPERFECTIONS IN SOLIDS
Vacancies and Self-Interstitials
4.1 The equilibrium fraction of lattice sites that are vacant in silver (Ag) at 700C is 2 106. Calculate
the number of vacancies (per meter cubed) at 700C. Assume a densi
5.1 Briefly explain the difference between self-diffusion and interdiffusion.
Self-diffusion is atomic migration in pure metals-i.e., when all atoms exchanging positions are of the same
Principles of Fracture Mechanics
8.1 What is the magnitude of the maximum stress that exists at the tip of an internal crack having a radius
of curvature of 1.9 104 mm (7.5 106 in.) and a crack length of 3.8 102 mm (1.5
DISLOCATIONS AND STRENGTHENING MECHANISMS
Basic Concepts of Dislocations
Characteristics of Dislocations
7.1 To provide some perspective on the dimensions of atomic defects, consider a metal specimen with a
STRUCTURES AND PROPERTIES OF CERAMICS
12.1 For a ceramic compound, what are the two characteristics of the component ions that determine the
The two characteristics of component io
The Chemistry of Polymer Molecules
14.1 On the basis of the structures presented in this chapter, sketch repeat unit structures for the following
The Kinetics of Phase Transformations
10.1 Name the two stages involved in the formation of particles of a new phase. Briefly describe each.
The two stages involved in the formation of particles of
CHARACTERISTICS, APPLICATIONS, AND PROCESSING OF POLYMERS
15.1 From the stressstrain data for poly(methyl methacrylate) shown in Figure 15.3, determine the
modulus of elasticity and tensile strength at ro
function [seconds minutes] = lab3_1( hours )
% converts hours into the number of seconds in the hours and the number of
% minutes in the hours
multiplier = 60;
seconds = hours*multiplier*multiplier;
minutes = hours*multiplier;
% Put the answer to th
const int ival = 1024;
const int &refval = ival;
int &ref2 = ival;
int i = 42;
const int &r = 42;
const int &r2 = r + i;/r i
const int &r3 = r + i;/
const const extern
extern const int bufSi
Exam 2 Review
Quote of the Day
1) See "Recursion".
2) Did you mean: Recursion (from Google)
C+ Basics, Simple I/O, Selection, and Scope
Functions and Ways to Pass Data
Quote of the Day
A mind once stretched by a new idea never regains its
A program that calls itself is called recursive.
int factorial (int n)cfw_
if (n=0) return 1;
Advanced C+: Parallel Programming
Quotes of the Day
Never put off till tomorrow what you can do today.
- Philip Stanhope,
4th Earl of Chesterfield
Never put off till tomorrow what you can do the day
- Mark Twain
What is Par