Ask Question, Ask an Expert


Ask Other Engineering Expert

problem: The potential energy between two atoms can be represented as shown below:

V = - (A/r) + (B/r10)

Where A and B are constants and r is the inter atomic separation distance. Plot the potential energy verses distance relationships for these atoms when A =  8 x 10-30 J.m and B = 5 x 10-119 J.m10. Find out the coefficient of thermal expansion (in m/m.K) for the material over the given temperature ranges:

a)  0oK to 0oC,
b)  0oC to 820oC.

Suppose that thermal energy of the system is 3kT/2 where k is Boltzman’s constant k = 1.381 x 10-23 J/K.

problem: Gallium arsenide (GaAs) has the zinc blende structure. The gallium atoms are in FCC packing and the arsenic atoms occupy half the tetrahedral sites. Compute the density of Gallium arsenide (GaAs) by using the given data.

         Covalent Radius    Atomic Mass
 Ga    1.26 Ångstroms     69.7 g/mole
 As    1.19 Ångstroms     74.9 g/mole

Avogadro’s number (NAv) is 6.02 x 1023 atoms per mole.

problem: Using the phase diagram below for the copper-silver system, find out:

i) The phases present

ii) The composition (wt % Cu) of those phases and

iii) The amount (wt %) of each phase for:

a) Copper-silver alloy (70 wt % copper) at 900 o
b) Copper-silver alloy (70 wt % copper) at 600 o
c) Copper-silver alloy (5 wt % copper) at 800 oC

2131_phase diagram of silver copper.jpg

Other Engineering, Engineering

  • Category:- Other Engineering
  • Reference No.:- M9297

Have any Question? 

Related Questions in Other Engineering

Biomedical engineering modelling amp analysis assignment

Biomedical Engineering Modelling & Analysis Assignment - Aim and Learning Outcomes: To use appropriate software to solve a set of differential equations related to a topical engineering problem and use the solutions to m ...

1the emf of a generator of 377 ohm internal impedance is a

1. The EMF of a generator of 377 ohm internal impedance is a 2 ps long pulse of 12 volt amplitude. The generator drives a 10km long section of transmission line of 377 ohm characteristic impedance and 3 x 10 8 m/s propag ...

Problem 1find the maximum likelihood ml test for a single

Problem 1. Find the Maximum Likelihood (ML) test for a single observation x(0) to distinguish between H 0 and H 1 if H 0 : P x (0)(x(0)) = 1/2exp (-|x(0)|) H 1 : P x (0)(x(0)) = 1/2exp (-|x(0) - A|) when A > 0. Find the ...

Assignmentpart 1bullop-amp introduction1read chapters 1-2

Assignment Part 1 • Op-Amp Introduction 1. Read Chapters 1-2 in the text Op Amps for Everyone Fourth Edition 2. For the configuration below: 3. o With Vin = 4Vrms, f = 1kHz answer the following for each case: o Calculate ...

Assignmentfor the circuit below perform the following1given

Assignment For the circuit below, perform the following: 1. Given an AC input voltage of Vrms = 200Vrms and a sinusoidal frequency of omega = 120pi rad/sec, determine the following: o V1peak (peak value of AC input volta ...

Stting up a xilinx project for the bcd clockobjective

Setting up a Xilinx project for the BCD Clock Objective: This document is intended to be used as a reference guide to aid in setting up and working with a Xilinx ISE WebPACK project for use with the BCD clock project. Pr ...

Diode circuits1 the 6v zener diode below has zero zener

Diode Circuits 1. The 6V zener diode below has zero Zener resistance and a knee current of 5mA.The minimum value of R, so that the voltage across it does not fall below 6V is 2. A zener diode in the circuit shown in belo ...

1 summarise the steps in the development of an open pit

1. Summarise the steps in the development of an open pit mine. 2. Define or describe the following terms a. Bench height b. Working bench c. Crest d. Cut e. Toe f. Safety bench/catch bench g. Bench face angle h. Back bre ...

Electronics lab transistor biasing1given a bjt unloaded

Electronics Lab: Transistor Biasing 1. Given a BJT unloaded amplifier shown in figure 1 below with β=100. o Draw DC equivalent circuits of this unloaded amplifier. o Draw the DC load line of the circuit. o Determine the ...

The presentation should cover the followingslide show give

The presentation should cover the following; Slide show Give information on structure Recalls on any appliances 4 questions you would want to ask the firefighters and homeowner hypothesis 10-15 minutes nfpa 921 worksheet ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen