In: Other

find solution of the following question:

a) propose a strategy to form the strongest Al 2024, and List two main drawbacks of such a material.

b) Precipitation hardening ( increases/decreases ) the yield strength of materials

(a) The two major drawbacks of Al 2024 alloy is that it shows less corrosion resistance and poor weldabiity.Athough it shows high strength and fatigue resistance.Because it shows less corrosion resistance,it is often cladded with aluminium for industrial and practical use.However the strategy which i could think of to form strongest Al 2024 is that if we could some how make it more corrosion resistant .This can be done by adding little zinc to its composition which will be likewise brass composition and the whole mixture will be more corrosion resistant,but how it will affect its properties that will be a matter of research.The zinc should be added in a very less amount since it has tendency to oxidise.

(b) **Precipitation
hardening** is a heat treatment technique that takes place
at low temperatures and makes use of alloying
**materials**, such as aluminum and titanium. Hence it
improves /increases the yield strength of materials as well as its
corrosion resistance.

The same technique we can apply for case (a) as well.

QUESTION 1 What is the strongest form of intermolecular force
between solute and solvent in a solution of CH3OH(l) in H2O(l)?
1. ion-dipole 2. dipole-induced dipole 3. hydrogen bonding 4.
dispersion 5. dipole-dipole
QUESTION 2 Which of the following is more soluble in water,
ethanol or CBr3H(l). Don't try to type the subscripts, just use
letters and numbers.
QUESTION 3 A flask containing solid ammonium chloride becomes
colder as water is added and the salt dissolves. Is the magnitude
of...

Objective: Change & Risk Management
Question: Propose change strategy for any product or service
of your choice.
Tip:
a. Make sure to assess the risk

Database Management Question:
Choose a database recovery problem and then propose a solution
using the techniques, such as log-based recovery or shadow paging,
etc.
Briefly describe the technique, when it is appropriate to use,
and what recovery problem it solves.

Question 1. Find the general solution of the following ODEs
a) y′′ − 2y′ − 3y = e−x + 2e3x
b) y′′ + y′ + y = x2 + 4 cos x.

Predict the form of the solution (study limits) and find all of
the solutions using the Frobenius method approach. Write indicial
equation, find its roots, the recurrence relation, and the first
four terms terms of each series solution for xy"+y'+x^2y=0

a) Find the right form of the particular solution (you don't have to solve it)
y''-6y'+9y=6x^2+2-12e^3x
b) Solve using variation of parameters
y" + y = secx
c) define or explain the following
- Linear system
- Linear Homogenous system
- Linear Homogenous system with Constant coefficients
d) Solve the initial value problem using the D elimination
dx/dt = 4x - 3y
dy/dt = 6x-7y
Subject to the I.C
x(0) = 2
y(0) = -1

For the following find: (Show detailed working)
1) general solution of the associated homogns DE
2) form of the particular solution associated with
the undetermined coefficients method. Do not evaluate
coefficients
a) (d2 y / dx2) - dy/dx = x - 3
b) (d2 y / dx2) + 2 dy/dx + y =
(1+x)e-x + x2
c) (d2 y / dx2) + y =
sin(2x)

In one paragraph or less, propose the
best solution to the following experimental problems:
A) You are trying to do a two-colour FRAP experiment using
epifluorescence microscopy. You make FP constructs of your two
proteins and confirm that each retains its function within your
cells. One of the two proteins is coupled to a green emitter and
one is coupled to a red emitter. You test each FP construct
separately within the cell line (cell-FPgreen and cell-FPred), and
find that...

Find the general solution using REDUCTION OF ORDER. and
the Ansatz of the form y=uy1 = y=ue-x
(2x+1)y'' -2y' - (2x+3)y = (2x+1)2 ; y1 =
e-x
Thank you in advance

Question 2a-e:
Consider the following forecasts for 2020-2024 of the Future
Cash Flows, EBITDA and Future Interest Tax Shield for Firm X if the
expansion were not to occur. Assume that the EBITDA Multiple is 8.
Assume a discount factor of 9% for the Free Cash Flows and the
Continuation Value, and 9% for the Interest Tax Shield.
Firm Value
2020
2021
2022
2023
2024
Free Cash Flow of Firm
3,312,885
3,314,802
3,316,717
3,318,631
3,320,543
EBITDA
5,164,631
Interest Tax Shield...

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