Under what conditions do metals and polymers show a transition
between ductile and brittle behaviour?
For both materials use sketches and a few words to explain the
difference in ductile and brittle behaviour in terms of what is
happening at the atomic/molecular level.
Describe and briefly discuss an example where this behaviour is
important.

If an atom had energy levels at -10 eV, -4 eV, -1 eV, and of
course zero, according to Bohr's model this atom's electrons could
undergo energy changes:
A. Only in the amounts of 3 eV, 6 eV, and 9 eV
B. Only in the amounts of 1 eV, 3 eV, 4 eV, 6 eV, 9 eV, and 10
eV
C. Only in the amounts of 10 eV
D. Only in the amounts of 1 eV, 3 eV, and 4...

Consider a machine that has an initial cost of $126,000 and an
estimated salvage value of $27,000. After some analysis, we
conclude that this machine will have O&M costs of $1,850 per
year but based on the faulty nature of this machine we will have to
incur major maintenance costs at the end of year 3 and year 6.
During year 3 we expect to pay $14,000 and for year 6 we estimate a
$16,500. The machine will have a...

Consider the following standard reduction potentials in acid
solution at 25 °C:
PbI2(s) + 2e- → Pb(s) +2I-(aq)
Eºred = -0.365 V
Ca2+(aq) + 2e- → Ca(s)
Eºred = -2.868 V
Pt2+(aq) + 2e- → Pt(s)
Eºred = 1.18 V
Br2(l) + 2e- → 2Br-(aq)
Eºred = 1.066 V
Which one of the following is the strongest reducing agent?
1.
Pb(s)
2.
Ca(s)
3.
Pt(s)
4.
Br-(aq)
5.
Pt2+(aq)

In a homogenous good market two firms, A and B, are producing
with the same technology. Firm i’ s total cost function is C(qi) =
10 + 20qi, where i= A,B. The inverse demand function for the good
is given by P(qA+qB) = 150 – (qA+qB).
a) Assume that the firms choose simultaneously their quantities.
Find the market price and determine firm’s profits and consumer
surplus at that price.
b) If the two firms set simultaneously their prices, instead of...

Consider a new (and major) issue in biomedical and other types
of research: datasets on many conditions and treatments are now
extremely large, due to the availability of electronic records.
Suppose you are comparing outcomes in a study that compares
weight gain under two widely used diet plans for patients who are
receiving chemotherapy, where weight loss is common.
a) What will the large samples do to the standard errors?
b) How will these standard errors impact t-tests used to...

What is the weight fraction of the proeutectoid phase in a 1095
steel? Express your answer as a percent.

The body temperatures in degrees Fahrenheit of a sample of 6
adults in one small town are:
97.9
99.6
98.6
98.5
99.5
97.7
Assume body temperatures of adults are normally distributed. Based
on this data, find the 98% confidence interval of the mean body
temperature of adults in the town. Enter your answer as an
open-interval (i.e., parentheses)
accurate to twp decimal places (because the sample data are
reported accurate to one decimal place).
98% C.I. =
Answer should be...

Although safety incentives may be well-intentioned, do you feel
they really achieve the intended outcome, which is injury
reduction? Please justify your response. In addition, what do you
see as Occupational Safety and Health Administration's (OSHAs) view
regarding the use of incentive programs?

an investor short sell 700 shares of IOE incorporated, a
security which is eligible for reduced margin, at $22. it closes
the day at $24. what is the additional margin required?
A. $6440
B. $9360
C. $14270
D. $20600

Silver Company makes a product that is very popular as a
Mother’s Day gift. Thus, peak sales occur in May of each year, as
shown in the company’s sales budget for the second quarter given
below: April May June Total Budgeted sales (all on account)
$440,000 $640,000 $220,000 $1,300,000 From past experience, the
company has learned that 30% of a month’s sales are collected in
the month of sale, another 60% are collected in the month following
sale, and the...

Instruction (1 Mark)
Topic:
Application Case 2.1 Medical Device Company Ensures Product Quality
While Saving Money
Go to
E-Text section in Moodle, open the book -
Chapter: 2
Page:
89-91
Questions:
1.
What were the main challenges for the medical device company?
2.
Were they market or technology-driven?
3.
What was the proposed solution?
4.
What were the results?
5.
What do you think was the real return on investment (ROI)?

Which of the following statements is true of the LIFO cost flow
assumption
a. LIFO yields a higher net income than FIFO and averaging in a
period of rising prices.
b. LIFO provides a better matching of current costs and
expenses.
c. LIFO yields a higher cost of goods sold than other costing
methods, in periods of falling prices.
d. LIFO yields a lower ending inventory than other costing
methods, in periods of falling prices.
e. LIFO puts the earliest...

Tom Lee, a currency speculator, sells 150 October futures
contracts. The notional principal of each contract is ¥12,500,000.
The settlement price is $0.009593/¥. What is the value of his
position at maturity if the ending spot rate is ¥110/$?

In an experiment, you want to see if, when trying to stick to a
diet, the number of meals per day and/or the number of calories per
meal affected a person's ability to stick to their diet. Each
subject was given a number of meals to eat per day: either 3, 4, or
5. Each subject was also given a number of calories to eat per
meal, either 200, 250, or 300 calories. Use this information for
the next two...

You have decided to place $972 in equal deposits every month at
the beginning of the month into a savings account earning 14.83
percent per year, compounded monthly for the next 12 years. The
first deposit is made today. How much money will be in the account
at the end of that time period?
Round the answer to two decimal places.

The Sarbanes−Oxley Act requires management to certify that it
has informed the auditor and audit committee of any
A. related party transactions.
B. significant deficiencies in business practices.
C. specific business or industry risk.
D. significant deficiencies in internal controls.
Whats the answer to this please

Assume that an economy is described by the Solow growth model as
below:
Production Function: y=50K^0.4 (LE)^0.6
Depreciation rate: S
Population growth rate: n
Technological growth rate:g
Savings rate: s
a. What is the per effective worker production function?
b. Show that the per effective worker production function
derived in part a above exhibits diminishing marginal returns in
capital per effective worker
C.Solve for the steady state output per effective worker as a
function of s,n,g, and S
d. A...

How much invested today will grow in the same amount of money in
25 years that $500 invested at the end of each year for the next 25
years will grow into given the annual rate of 6%?

1. Suppose you deposit $5,000 cash into your checking account
deposit at Bank and that the required reserve ratio is 10%. As a
result of your deposit, this bank can make a maximum loan to other
customers of
a. $500
b. $4500
c. $5000
d.$50000
2. If you withdraw $2,000 from your term deposit account and put
it in your checking account, M1 will _____ and M3 will ____.
3. In 2015, the inflation rate of Venezuela reached 181%. In...

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