Question

Using the born approximation, derive the total cross section, sigma(k), for the following double- shell structure:

V(r) = alpha*delta(r-a) - 2*alpha*delta(r-a/3)

Answer #1

A solenoid of total number of windings, N, of length,
l, and circular cross sectional area, A. A
current, I, is flowing through the wire winding that is
made of copper. Assume that the copper has a resistivity p
and the charge carrier density, n.
Using Drude model, derive an expression for the total excess
kinetic energy, K, carried by the electrons in the copper wire in
terms of N, l, V, I, and n. (Note: The mobile charges in...

A shell and-tube heat exchanger is required for the following
service:
Hot stream
Cold Stream
Aromatic Stream
Cooling Water
inlet Temperature (oC)
85
20
outlet Temperature (oC)
40
35
Mass Flowrate x heat Capacity (kW/oC)
85.2
Hot Stream
cold stream (Cooling water)
Heat Capacity (J/kg K)
2840
4193
Density (kg/m3)
750
999
Viscosity (cP)
0.34
1.016
Thermal conductivity (W/m.K)
0.19
0.594
Fouling Factor (m2.oC/W
0.00018
0.000176
? The cooling water is allocated to the tube-side of the
exchanger.
? It...

Derive the following using all known inferences rules and
equivalences
including QE.
Remember that equivalences afford you greater power than
derivation rules, because
you are permtted to substitute equivalent sub formlas within a wff.
For example, all the
moves on the left below are legitimate inferences even though the
first conditional is the
main operator. However, it is important to remember that you must
always be operating
on a true self-contained wff. The moves on the right are not
legitimate...

Using Gauss’s Law, answer the following
question
An insulator of radius, a = 3 cm is placed inside an SPHERICAL
shell conductor of inner radius b = 7 cm and outer radius c = 12
cm. The conductor has a total charge of Q = - 10 nC. The insulator
has a charge distributed around its volume with charge density
ρ, where the value of ρo = 2 ∗
10−4 C/m3 .
a) Compute the value of the TOTAL charge of...

Analyzing Starbucks' Equity Structure and Financial Position
Using either Starbucks’ most current Form 10-K or the company's
annual report, answer the following questions and prepare a
professionally written financial analysis report and, forward
opinion on Starbucks from the perspective of a portfolio manager.
Base your opinions and recommendation on the fact that you are the
portfolio manager. Your client already owns 15,000 shares of
Starbucks’ common stock. Furthermore, the client has the funds to
buy an additional 10,000 shares of...

Applications I
Consider the following data representing the total time (in hours)
a student spent on reviewing for the Stat final exam and the actual
score on the final. The sample of 10 students was taken from a
class and the following answers were reported.
time score
0 23
4 30
5 32
7 50
8 45
10 55
12 60
15 70
18 80
20 100
Part 1: Use the formulas provided on the 3rd formula sheet to
compute...

Statistical Analysis for Business Applications I
Consider the following data representing the total time (in hours)
a student spent on reviewing for the Stat final exam and the actual
score on the final. The sample of 10 students was taken from a
class and the following answers were reported.
time score
0 23
4 30
5 32
7 50
8 45
10 55
12 60
15 70
18 80
20 100
Part 1: Use the formulas provided on the 3rd...

An indoor air quality specialist records following information
for a room:
Total number of persons including smokers = 12
Number of
smokers
=
6
Smoking
rate
=
5 cigarettes/hr
Room dimensions (length, width and height) = 12m, 10m, and
4m
Mixing factor
=
0.3
Filter
efficiency
= 0.7
Recirculated indoor
air
= 2000 m3/hr
Installed fan
capacity
= 300 m3/hr
For calculations make the following assumptions:
Assumptions :
Mixing Factor,
k
0.3
Makeup air , Q0
=
ACH*V =
300.00...

I. Solve the following problem:
For the following data:
1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6 n = 12
b) Calculate
1) the average or average
2) quartile-1
3) quartile-2 or medium
4) quartile-3
5) Draw box diagram (Box & Wisker)
II. PROBABILITY
1. Answer the questions using the following
contingency table, which collects the results of a study to 400
customers of a store where you want to analyze the payment
method.
_______B__________BC_____
A...

1. In which of the following would we expect to have the longest
food chains?
a. An eutrophic lake
b. A coastal upwelling region
c. A subtropical gyre
d. In the gut of a shark
e. An estuary
f. A desert
2. Tompkins County has a large deer population. In fact, there
are an ever-increasing number of car accidents caused by people
hitting deer. You are a wildlife manager charged with reducing the
number of deer over the next 50...

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