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Describe three advantages of moving your corporate e-mail to the cloud

Question
	1.Describe three advantages of moving your corporate e-mail to the cloud. What are three risks involved in moving to cloud-based e-mail? Do the benefits outweigh the risks?

2. Unified communications (UC) is a communications solution that integrates instant messaging, presence information, IP telephony and video conferencing with non real-time services, such as voicemail, SMS, e-mail and fax, into a single user interface. Some predictions say that unified communications is the next direction in corporate communications. Currently, these features tend to be separate applications on our devices. Do you agree that a unified communications solution is the future of corporate communications? Why or why not? Are there any unifying applications, or unified communications successes or failures to support your answer?
	

general business data bank

Question
	
. Certain firms and industries are
characterized by consistently low or high betas, depending on the particular
situation. On the basis of that notion,
which of the following companies seems out of place with its stated beta? (That is, one of the following companies
definitely could not have the indicated beta, while the other companies seem
well matched with their stated betas.)



a. Sun Microsystems, Beta
= 1.59.

b. Amazon.com, Beta
= 1.70.

c. Ford Motor Company, Beta
= 0.92.

d. Florida
Power & Light, Beta = 1.52.

e. Wal-Mart, Beta
= 1.15.



 

. Which of
the following statements is most correct?



a. The SML relates required
returns to firms’ market risk. The slope
and intercept of this line cannot be controlled by the financial
manager.

b. The slope of the SML is
determined by the value of beta.

c. If you plotted the returns of a
given stock against those of the market, and you found that the slope of the
regression line was negative, the CAPM would indicate that the required rate of
return on the stock should be less than the risk-free rate for a
well-diversified investor, assuming that the observed relationship is expected
to continue on into the future.

d. If investors become less risk
averse, the slope of the Security Market Line will increase.

e. Statements a and c are correct.







 

. Other things held constant, (1)
if the expected inflation rate decreases, and (2) investors become more risk
averse, the Security Market Line would shift



a. Down and have a steeper slope.

b. Up and have a less steep slope.

c. Up and keep the same slope.

d. Down and keep the same slope.

e. Down and have a less steep slope.



 

. Which of
the following statements is most correct about a stock that has a beta = 1.2?



a. If the stock’s beta doubles its
expected return will double.

b. If expected inflation increases
3 percent, the stock’s expected return will increase by 3 percent.

c. If the market risk premium
increases by 3 percent the stock’s expected return will increase by less than 3
percent.

d. All of the statements above are
correct.

e. Statements b and c are correct.



 

. Assume that the risk-free rate, kRF,
increases but the market risk premium, (kM – kRF)
declines. The net effect is that the
overall expected return on the market, kM, remains constant. Which of the following statements is most
correct?



a. The
required return will decline for stocks that have a beta less than 1.0 but will
increase for stocks that have a beta greater than 1.0.

b. The required return will increase for stocks that have a beta less
than 1.0 but will decline for stocks that have a beta greater than 1.0.

c. The
required return of all stocks will fall by the amount of the decline in the
market risk premium.

d. The
required return of all stocks will increase by the amount of the increase in
the risk-free rate.

e. Since
the overall return on the market stays constant, the required return on all
stocks will remain the same.







 

. Which of
the following statements is most correct?



a. An increase in expected
inflation could be expected to increase the required return on a riskless asset
and on an average stock by the same amount, other things held constant.

b. A graph
of the SML would show required rates of return on the vertical axis and
standard deviations of returns on the horizontal axis.

c. If two “normal” or “typical”
stocks were combined to form a 2-stock portfolio, the portfolio’s expected
return would be a weighted average of the stocks’ expected returns, but the
portfolio’s standard deviation would probably be greater than the average of
the stocks’ standard deviations.

d. If investors became more risk
averse, then (1) the slope of the SML would increase and (2) the required rate
of return on low-beta stocks would increase by more than the required return on
high-beta stocks.

e. The CAPM has been thoroughly
tested, and the theory has been confirmed beyond any reasonable doubt.



 

. Which of
the following statements is most correct?



a. If the returns from two stocks
are perfectly positively correlated (that is, the correlation coefficient is
+1) and the two stocks have equal variance, an equally weighted portfolio of
the two stocks will have a variance that is less than that of the individual
stocks.

b. If a stock has a negative beta,
its expected return must be negative.

c. According to the CAPM, stocks
with higher standard deviations of returns will have higher expected returns.

d. A
portfolio with a large number of randomly selected stocks will have less market
risk than a single stock that has a beta equal to 0.5.

e. None of the statements above is
correct.



 

. Which of
the following statements is most correct?



a. We would observe a downward
shift in the required returns of all stocks if investors believed that there
would be deflation in the economy.

b. If
investors became more risk averse, then the new security market line would have
a steeper slope.

c. If the beta of a company
doubles, then the required rate of return will also double.

d. Statements a and b are correct.

e. All of the statements above are
correct.







 

. Which of
the following statements is most correct?



a. If you add enough randomly
selected stocks to a portfolio, you can completely eliminate all the market
risk from the portfolio.

b. If you form a large portfolio
of stocks each with a beta greater than 1.0, this portfolio will have more market
risk than a single stock with a beta = 0.8.

c. Company-specific (or
unsystematic) risk can be reduced by forming a large portfolio, but normally
even highly-diversified portfolios are subject to market (or systematic) risk.

d. All of the statements above are
correct.

e. Statements b and c are correct.



 

. Jane
holds a large diversified portfolio of 100 randomly selected stocks and the
portfolio’s beta = 1.2. Each of the
individual stocks in her portfolio has a standard deviation of 20 percent. Jack has the same amount of money invested in
a single stock with a beta equal to 1.6 and a standard deviation of 20
percent. Which of the following statements
is most correct?



a. Jane’s portfolio has a larger
amount of company-specific risk since she is holding more stocks in her
portfolio.

b. Jane has a higher required rate
of return, since she is more diversified.

 c. Jane’s portfolio has less market risk since it has a lower beta.

 d. Statements b and c are correct.

 e. None of the statements above is correct.



 

. Which of
the following statements is most correct?



a. It is possible to have a
situation in which the market risk of a single stock is less than the market
risk of a portfolio of stocks.

b. The market risk premium will
increase if, on average, market participants become more risk averse.

c. If you
selected a group of stocks whose returns are perfectly positively correlated,
then you could end up with a portfolio for which none of the unsystematic risk
is diversified away.

d. Statements a and b are correct.

e. All of the statements above are
correct.







Tough:



 

. Which of
the following statements is most correct?



a. According to CAPM theory, the
required rate of return on a given stock can be found by use of the SML
equation:



ki = kRF + (kM - kRF)bi.



Expectations for inflation are not reflected anywhere in this equation,
even indirectly, and because of that the text notes that the CAPM may not be
strictly correct.

b. If the required rate of return
is given by the SML equation as set forth in Statement a, there is
nothing a financial manager can do to change his or her company’s cost of
capital, because each of the elements in the equation is determined exclusively
by the market, not by the type of actions a company’s management can take, even
in the long run.

c. Assume that the required rate
of return on the market is currently kM = 15%, and that kM
remains fixed at that level. If the
yield curve has a steep upward slope, the calculated market risk premium would
be larger if the 30-day T-bill rate were used as the risk-free rate than if the
30-year T-bond rate were used as kRF.

d. Statements
a and b are correct.

e. Statements a and c are correct.



 

. Which of the following statements is most
correct?



a. If investors become more risk averse but kRF
remains constant, the required rate of return on high-beta stocks will rise,
the required return on low-beta stocks will decline, but the required return on
an average-risk stock will not change.

b. If Mutual Fund A held equal
amounts of 100 stocks, each of which had a beta of 1.0, and Mutual Fund B held
equal amounts of 10 stocks with betas of 1.0, then the two mutual funds would
both have betas of 1.0. Thus, they would be equally risky from an investor’s
standpoint.

c. An investor who holds just one stock will be
exposed to more risk than an investor who holds a portfolio of stocks, assuming
the stocks are all equally risky. Since
the holder of the 1-stock portfolio is exposed to more risk, he or she can
expect to earn a higher rate of return to compensate for the greater risk.

d. Assume that the required rate of return on the
market, kM, is given and fixed.
If the yield curve were upward-sloping, then the Security Market Line
(SML) would have a steeper slope if 1-year Treasury securities were used as the
risk-free rate than if 30-year Treasury bonds were used for kRF.

e. None of the statements above is correct.





Multiple
Choice: Problems



 

. The risk-free rate of interest, kRF,
is 6 percent. The overall stock market
has an expected return of 12 percent.
Hazlett, Inc. has a beta of 1.2.
What is the required return of Hazlett, Inc. stock?



a. 12.0%

b. 12.2%

c. 12.8%

d. 13.2%

e. 13.5%

 Answer:
b 

. The risk-free rate is 5 percent. Stock A has a beta = 1.0 and Stock B has a
beta = 1.4. Stock A has a required
return of 11 percent. What is Stock B’s
required return?



a. 12.4%

b. 13.4%

c. 14.4%

d. 15.4%

e. 16.4%

 

. Calculate the required rate of return for
Mercury Inc., assuming that investors expect a 5 percent rate of inflation in
the future. The real risk-free rate is
equal to 3 percent and the market risk premium is 

5 percent. Mercury has a beta of 2.0,
and its realized rate of return has averaged 15 percent over the last 5 years.



a. 15%

b. 16%

c. 17%

d. 18%

e. 20%







  

. Consider the following
information for three stocks, Stock A, Stock B, and Stock C. The returns on each of the three stocks are
positively correlated, but they are not perfectly correlated. (That is, all of the correlation coefficients
are between 0 and 1.)



 Expected Standard

 Stock Return Deviation Beta

Stock A 10% 20% 1.0

Stock B 10 20 1.0

Stock C 12 20 1.4



Portfolio
P has half of its funds invested in Stock A and half invested in Stock B. Portfolio Q has one third of its funds
invested in each of the three stocks.
The risk-free rate is 5 percent, and the market is in equilibrium. (That is, required returns equal expected
returns.) What is the market risk
premium (kM - kRF)?



a. 4.0%

b. 4.5%

c. 5.0%

d. 5.5%

e. 6.0%



 

. A stock has an expected return of 12.25
percent. The beta of the stock is 1.15
and the risk-free rate is 5 percent.
What is the market risk premium?



a. 1.30%

b. 6.50%

c. 15.00%

d. 6.30%

e. 7.25%



 

. Given the following information, determine
which beta coefficient for Stock A is consistent with equilibrium:























 = 11.3%; kRF
= 5%; kM = 10%



a. 0.86

b. 1.26

c. 1.10

d. 0.80

e. 1.35







  

. Assume that the risk-free rate is 5 percent
and that the market risk premium is 7 percent.
If a stock has a required rate of return of 13.75 percent, what is its
beta?



a. 1.25

b. 1.35

c. 1.37

d. 1.60

e. 1.96



 

. You hold a diversified portfolio consisting
of a $10,000 investment in each of 20 different common stocks (that is, your
total investment is $200,000). The
portfolio beta is equal to 1.2. You have
decided to sell one of your stocks that has a beta equal to 0.7 for
$10,000. You plan to use the proceeds to
purchase another stock that has a beta equal to 1.4. What will be the beta of the new portfolio?



a. 1.165

b. 1.235

c. 1.250

d. 1.284

e. 1.333



 

. An investor is forming a portfolio by
investing $50,000 in stock A that has a beta of 1.50, and $25,000 in stock B
that has a beta of 0.90. The return on the market is equal to 6 percent and
Treasury bonds have a yield of 4 percent. What is the required rate of return
on the investor’s portfolio?



a. 6.6%

b. 6.8%

c. 5.8%

d. 7.0%

e. 7.5%



 

. You are an investor in common stocks, and you
currently hold a well-diversified portfolio that has an expected return of 12
percent, a beta of 1.2, and a total value of $9,000. You plan to increase your
portfolio by buying 100 shares of AT&E at $10 a share. AT&E has an
expected return of 20 percent with a beta of 2.0. What will be the expected
return and the beta of your portfolio after you purchase the new stock?



a.

 = 20.0%; bp
= 2.00

b.

 = 12.8%; bp
= 1.28

c.

 = 12.0%; bp
= 1.20

d.

 = 13.2%; bp
= 1.40

e.

 = 14.0%; bp
= 1.32

 

. Stock A has an expected return
of 12 percent, a beta of 1.2, and a standard deviation of 20 percent. Stock B has an expected return of 10 percent,
a beta of 1.2, and a standard deviation of 15 percent. Portfolio P has $900,000
invested in Stock A and $300,000 invested in Stock B. The correlation between Stock A’s returns and
Stock B’s returns is zero (that is, r = 0).
Which of the following statements is most correct?



a. Portfolio P’s expected return is 11.5 percent.

b. Portfolio P’s standard deviation is 18.75
percent.

c. Portfolio P’s beta is less than 1.2.

d. Statements a and b are correct.

e. Statements a and c are correct.



 

. Below are the stock returns for the past five
years for Agnew Industries:



Year Stock Return

2002 22%

2001 33 

2000 1 

1999 -12 

1998 10 



 What was the stock’s coefficient of
variation during this 5-year period? (Use the population standard deviation to
calculate the coefficient of variation.)



a. 10.80

b. 1.46

c. 15.72

d. 0.69

e. 4.22






















































.




















.



























%.













%.







.













.







.







.







:

























.





	

CIS 319 Complete Course Material week 1-5

Question
	CIS 319 Complete Course Material week 1-5	

BUSN310 forum 6

Question
	


Forum 6

Continue
working with your company and industry from Week 2 and complete the following:



1. Perform research (minimum of 2
sources in APA format).

2. Identify the country cluster (as
identified in the text) for both your Domestic and Global environments.

3. Include sociocultural factors
that may help and hinder the company and its operations in 2 different cluster
countries.

4. Evaluate their successes and/or
failures.

5. Minimum 4 complete paragraphs; a
paragraph is a minimum of 100 words.

6. Reply to 2 other of your
classmates’ original posting.

7. Refer to the syllabus about the
minimum requirements for forums.



LO - 6 -
Working with their chosen company, the student will examine the Sociocultural
factors and how those factors affect their chosen company using their
identified Domestic and Global environments.



	

general business data bank

Question
	
10.3 Trident's Transaction Exposure



1) A U.S. firm
sells merchandise today to a British company for £100,000. The current exchange rate is $2.03/£ , the
account is payable in three months, and the firm chooses to avoid any hedging
techniques designed to reduce or eliminate the risk of changes in the exchange
rate. The U.S. firm is at risk today of a loss if

A) the exchange
rate changes to $2.00/£.

B) the exchange
rate changes to $2.05/£.

C) the exchange
rate doesn't change.

D) all of the
above.





2) A U.S. firm
sells merchandise today to a British company for £100,000. The current exchange rate is $2.03/£ , the
account is payable in three months, and the firm chooses to avoid any hedging
techniques designed to reduce or eliminate the risk of changes in the exchange
rate. If the exchange rate changes to $2.05/£ the U.S. firm will realize a
________ of ________.

A) loss; $2000

B) gain; $2000

C) loss; £2000

D) gain; £2000



3) A U.S. firm
sells merchandise today to a British company for £100,000. The current exchange rate is $2.03/£ , the
account is payable in three months, and the firm chooses to avoid any hedging
techniques designed to reduce or eliminate the risk of changes in the exchange
rate. If the exchange rate changes to $2.01/£ the U.S. firm will realize a
________ of ________.

A) loss; $2,000

B) gain; $2,000

C) loss; £2000

D) gain; £2000





4) ________ is
NOT a popular contractual hedge against foreign exchange transaction exposure.

A) Forward market
hedge

B) Money market
hedge

C) Options market
hedge

D) All of the
above are contractual hedges.

Instruction 10.1:


Use the
information for the following problem(s).



Plains States Manufacturing has just signed a contract to
sell agricultural equipment to Boschin, a
German firm, for euro 1,250,000. The sale was made in June with payment due six
months later in December. Because this is a sizable contract for the firm and
because the contract is in euros rather than dollars, Plains States is
considering several hedging alternatives to reduce the exchange rate risk
arising from the sale. To help the firm make a hedging decision you have
gathered the following information.



? The spot exchange rate is $1.40/euro

? The six month forward rate is $1.38/euro

? Plains States' cost of capital is 11%

? The Euro zone 6-month borrowing rate is
9% (or 4.5% for 6 months)

? The Euro zone 6-month lending rate is 7%
(or 3.5% for 6 months)

? The U.S. 6-month borrowing rate is 8% (or
4% for 6 months)

? The U.S. 6-month lending rate is 6% (or
3% for 6 months)

? December put options for euro 625,000;
strike price $1.42, premium price is 1.5%

? Plains States' forecast for 6-month spot
rates is $1.43/euro

? The budget rate, or the lowest acceptable
sales price for this project, is $1,075,000 or $1.35/euro



5) Refer to
Instruction 10.1. If Plains States chooses not to hedge their euro receivable,
the amount they receive in six months will be ________.

A) $1,750,000

B) $1,250,000

C) $892,857

D) undeterminable
today









6) Refer to
Instruction 10.1. If Plains States chooses to hedge its transaction exposure in
the forward market, it will ________ euro 1,250,000 forward at a rate of
________.

A) sell; $1.38/euro

B) sell;
$1.40/euro

C) buy;
$1.38/euro

D) buy;
$1.40/euro



7) Refer to
Instruction 10.1. Plains States chooses to hedge its transaction exposure in
the forward market at the available forward rate. The payoff in 6 months will
be ________.

A) $1,750,000

B) $1,250,000

C) $1,725,000

D) $1,787,500





8) Refer to
Instruction 10.1. If Plains States locks in the forward hedge at $1.38/euro,
and the spot rate when the transaction was recorded on the books was
$1.40/euro, this will result in a "foreign exchange loss" accounting
transaction of ________.

A) $0

B) $25,000

C) This was not a
loss; it was a gain of $25,000.

D) There is not
enough information to answer this question.





9) Refer to
Instruction 10.1. Plains States would be ________ by an amount equal to
________ with a forward hedge than if they had not hedged and their predicted
exchange rate for 6 months had been correct.

A) better off;
$43,750

B) better off;
$62,500

C) worse off;
$43,750

D) worse off;
$62,500







10) Refer to
Instruction 10.1. Plains States could hedge the Euro receivables in the money
market. Using the information provided, how much would the money market hedge
return in six months assuming Plains States reinvests the proceeds at the U.S.
investment rate?

A) $1,250,000

B) $1,724,880

C) $1,674,641

D) $1,207,371





11) Refer to
Instruction 10.1. Money market hedges almost always return more than forward
hedges because of the greater risk involved.



12) Refer to
Instruction 10.1. If Plains States chooses to implement a money market hedge for
the Euro receivables, how much money will the firm borrow today?

A) euro 1,201,923

B) $1,201,923

C) euro 1,196,172

D) $1,196,172



13) Refer to
Instruction 10.1. A ________ hedge allows Plains States to enjoy the benefits
of a favorable change in exchange rates for their euro receivables contract
while protecting the firm from unfavorable exchange rate changes.

A) forward 

B) call option

C) put option

D) money market







14) Refer to
Instruction 10.1. What is the cost of a put option hedge for Plains States'
euro receivable contract? (Note: Calculate the cost in future value dollars and
assume the firm's cost of capital as the appropriate interest rate for
calculating future values.)

A) $27,694

B) $26,250

C) euro 27,694

D) euro 26,250





15) Refer to
Instruction 10.1. The cost of a call option to Plains States would be ________.

A) $17,653

B) $16,733

C) $18,471

D) There is not
enough information to answer this question.



16) Refer to
Instruction 10.1. If Plains States purchases the put option, and the option expires
in six months on the same day that Plains States receives the euro 1,250,000,
the firm will exercise the put at that time if the spot rate is $1.43/euro.



17) The structure
of a money market hedge is similar to a forward hedge. The difference is the
cost of the money market hedge is determined by the differential interest
rates, while the forward hedge is a function of the forward rates quotation.





18) In efficient
markets, interest rate parity should assure that the costs of a forward hedge
and money market hedge should be approximately the same.




	

BA3301 Class Presentation and Paper: Consumer law

Question
	
8.3 Class Presentation and Paper: Consumer law
The purpose of this presentation is to bring what we are studying alive & relevant to things that are actually happening around us. Make it Interesting. 
Presentations:
You must sign up for one presentation to be made before a chapter in class. Your presentation will be on an interesting newspaper article, current event, or court case relevant to the information contained in the assigned chapter and will be a Power Point and a paper. There is a link to the left entitled "Presentation Signup" If you choose the fist date you have extra time to turn in your paper. You will also be graded easier but your evaluation may be made public so other students will have clues of what not to do...
The Power Point will be approximately 5 minutes long(at least 10 slides+ Title page, bibliography, and introduction slide).Introduce yourself after the title page as you would in an in class presentation.Its title shall be "chapter x your name" if you want full credit. Make sure you review the Rubric.
It will be accompanied by a written paper in Word format. The paper must be afull3 page report(12 pt type, 1” margins, double spaced. with a separate cover page. No other header, title or marking on the paper that would increase or affect the page length or count.) The title of the paper will be " ChX your name". This may not seem important but it saves me many minutes in grading for it to be correct. You will lose point for failure to properly title your paper and power point.
It must have a separate bibliography not part of the page count.
All direct quotes from web sites or books, even our text must be cited. Copying part of an article with a few words changed is not aceptable as part of your paper and is plagerism. Any plagiarism will result in a 0. It will be turned in through "turn it in".
Do not try to teach us the entire chapter. Just pick one relevant, INTERESTING event, issue, case or news article and present on that. Please see my sample PowerPoint attached to the Ch 2 content area.
Do not use a case in the book unless you are at a complete loss and have notified me. I might have a better idea. If you do use a case from the book then you should bring in something from out of the book to give us something we could not garner on our own.
Also do not use a case in the book without prior approval. Provide the full case or a link to it and use it for your presentation.
Both your oral and your written report should summarize the case or event; tell us the connection to the issues covered in the chapter on which you are presenting; and current implications and updates on the status of the situation or law. But they should not be mirror images of each other. In your power point you should have an active link to your case or article so I may refer to it. You power point should be simple and easy to read. Cute colorful backgrounds usually make the presentation hard to read and follow. Do not be afraid to say "this case is connected to the chapter because...." Most points are lost for not enough pages and failure to either state the connection to the chapter and not giving either updates or future implications. (See the Rubric)
PP Presentation
Timely
20
Introduce yourself and your topic (just as you would in a live presentation) (Not part of your slide count)
 5
Paper and case/article turned in with presentation/link in presentation to article or case
5
Interesting
10
Current Event or Case or Landmark Case with Follow up
5
Enough information that we know what your message is.
10
5 minutes/average10 subject matter slides/proper form
10
Do not teach the entire chapter
5
Connection to Chapter(make clear )
10
Indicate ramification/future implications/developments in the case or law (something beyond the article)
10
Legible and readable/proper title
10
Bibliography(not part of the slide count)
10
Grammar Spelling construction, etc
15
 Paper
 On time
20
At least 3 full pages or more(12pt 1” margins, cover page, no header) TITLE OF FILE CORRECT
20
Bibliography(footnotes not necessary except for direct quotes)
10
Good grammar/proofed
20
Summarize the case/event
10
Connect to chapter
10
Reactions/Ramifications/go beyond the article
15
Expands on the Power Point
20

	

physics data bank

Question
	
Physics 9 Fall 2010

1. Light in air is incident on the surface of a transparent
substance at an angle of 58_ with

the normal. The reected and refracted rays are observed to
be mutually perpendicular.

(a) What is the index of refraction of the transparent substance?
Hint: Note that

sin (90_ ????
_) = cos _.

(b) What is the critical angle for the total internal
reection in this substance?

||||||||||||||||||||||||||||||||||||

2. A stationary naval destroyer is equipped with sonar that
sends out 40 MHz pulses of

sound. The destroyer receives reected pulses back from a
submarine directly below

with a time delay of 80 ms at a frequency of 39.959 MHz.

(a) What is the depth of the submarine?

(b) Based on the frequency shift, is the submarine ascending
or descending?

(c) If the speed of sound in seawater is 1.54 km/s, then
what is the vertical speed

of the submarine (remember that, since the pulse is reected,
it's going to be

Doppler shifted twice!).

||||||||||||||||||||||||||||||||||||

3. When electrons transition from one orbit to lower one,
they emit a photon of a speci_c

frequency (and so a speci_c color). In one of these cases
the electron jumps from the

third to second orbit, emitting a photon of frequency f =
4:57 _ 1014 Hz, which is in

the red region. In another case the electron jumps from the
_fth orbit down to the

second, and emits a photon of frequency 6:91 _ 1014 Hz,
which is in the blue region of

the spectrum. This light is then sent through a di_raction
grating with 4500 lines/cm.

(a) What are the wavelengths of the two spectral lines?

(b) What is the distance between the slits in the grating?

(c) What is the angular separation, __, (in degrees) between
the two m = 1 spectral

lines?

(d) What about for the m = 2 spectral lines?

||||||||||||||||||||||||||||||||||||

4. Suppose you have two in_nite straight line charges, of
charge per unit length _, a

distance d apart, moving along at a constant speed v. The
moving charge densities

constitute a current I = _v, and so the charges behave like
current-carrying wires.

Because the wires carry the same charge density, _, they
repel each other electrically.

But, because they are current-carrying wires, with currents
moving in the same di-

rection, they attract each other magnetically. How great
would v have to be in order

for the magnetic attraction to balance the electrical
repulsion? Work out the actual

number... Is this a reasonable sort of speed? (Hint - use
Gauss's law to get the electric

_eld, and Ampere's law to get the magnetic _eld of the wire.
Then determine the force

per unit length from each _eld, Felec=L = _E, and Fmag=L =
IB.)

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5. The galactic magnetic _eld in some region of interstellar
space has a magnitude of

1:00_10????9
T. A particle of dust has mass 10:0 _g and a total charge of 0:300 nC. How

many years does it take for the particle to complete a
revolution of the circular orbit

caused by its interaction with the magnetic _eld? You can
assume that the orbit is

perpendicular to the magnetic _eld.

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6. Inchy, an inchworm, is inching along a cotton
clothesline. The 5 meter long clothesline

has a mass of 0.2 kilograms, and is pulled tight under 100 N
of tension. Vivian is

hanging up her swimsuit 0 meters from one end when she sees
Inchy 2.54 cm (one inch)

from the opposite end. She plucks the clothesline sending a
terrifying 3 centimeter high

wave pulse toward Inchy. If Inchy crawls at 1 inch per
second, will he get to the end

of the clothesline before the pulse reaches him? If so, how
much time does he have to

spare? If not, how far does he make it before the pulse
kicks poor Inchy o_ the line?

(Note: don't forget that Inchy is running away from the
pulse, so the time for it to

reach him is not just his distance divided by the wave
velocity!)

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Extra Credit Question!!

The following is worth 15 extra credit points! The _gure to
the right shows the actual produc-

tion of the antimatter partner to the electron, the
positron, in a bubble chamber immersed in

a uniform magnetic _eld. The positron has ex-actly the same
mass as an electron, but opposite

charge. The di_erent tracks show the trajecto-ries of the
di_erent particles. In the reaction at

the top, a high-energy gamma ray (just a high- frequency
light wave) is absorbed by an electron,

which scatters away to the right, producing an electron-positron
pair though the reaction

 + e ! e???? + e+ + e????; where is the incident gamma ray. A similar ef-fect
occurs in the bottom 

reaction, but the original electron very likely had littlenal
velocity. Let's see what we can tell about 

this reaction.

(a) Is charged conserved in this reaction? Explain.

(b) Why do the electrons and positrons curve in di_erent
directions?

(c) In what direction (into or out of the page) is the
magnetic _eld? How can you

tell?

(d) How does the velocity of the spiraling electron compare
to that of the spiraling

positron? How can you tell?

(e) Accelerating charges radiate energy. Explain why this
leads to the spiraling mo-

tion for the particles.

(f) Positrons and electrons can come together and
annihilate, releasing two photons

in the process e???? +
e+ ! + :

Explain why we get two photons, and not one. Hint: consider
the the two particles

initially at rest right next to each other.

||||||||||||||||||||||||||||||||||||

 

A more colorful picture is seen to the right, where the
positrons are shown in red, and the electrons

in green. 

(a) Initially we have an electron and a photon. Since the
photon isn't charged, the initial charge is just that on the electron, ????e. After the reaction, we've produced an electron and
positron pair. The net charge of the pair is ????e+e
= 0, and since we still have an electron the net charge after the reaction is ????e, and so charge is conserved.

(b) The electrons and positrons are oppositely charged, and
so experience opposite forces in the

magnetic _eld. This leads to motion in di_erent directions.

(c) The electron is curving in the counterclockwise direction,
while the positron is curving in the

clockwise direction. From the magnetic force law, ~F = q~v _
~B , for the positively charged positron

the velocity is down, and the force is initially to the
left, and so the direction of the magnetic _eld

is out of the page.

(d) The faster the speed of the particle, the bigger the
radius of the curve. Since the positron has a

bigger spiral, it has a bigger speed.

(e) As the charges radiate, they lose energy. The only place
that they can lose it from is their kinetic energy, and so, they slow down. The
slower they move, the smaller the radius of their curvature. So, the curve
tightens as they slow down, leading to the spiral.

(f) Suppose we had an electron and a positron at rest and
just brought them together.

In this case the initial momentum is zero, but the photon
carries momentum. So,

a single photon would violate momentum conservation. Two
photons, emitted

back-to-back, would conserve momentum. This means we need
two photons.

	

ECO 550 Week 2 Chapter 3 and 4 problems

Question
	ECO 550 Week 2 Chapter 3(P-3,4,7) and 4(P-5,6,7)

Chapter 3: Problems 3, 4, and 7

3. The Olde Yogurt Factory has reduced the price of its popular Mmmm Sundae from $2.25 to $1.75. As a result, the firm’s daily sales of these sundaes have increased from 1,500/day to 1,800/day. Compute the arc price elasticity of demand over this price and consumption quantity range.

4. The subway fare in your town has just been increased from a current level of 50 cents to $1.00 per ride. As a result, the transit authority notes a decline in rider-ship of 30 percent.

a. Compute the price elasticity of demand for subway rides.

b. If the transit authority reduces the fare back to 50 cents, what impact would you expect on the ridership? Why?

7. In an attempt to increase revenues and profits, a firm is considering a 4 percent increase in price and an 11 percent increase in advertising. If the price elasticity of demand is ?1.5 and the advertising elasticity of demand is +0.6, would you expect an increase or decrease in total revenues?

Chapter 4: Problems 5, 6, and 7

5. General Cereals is using a regression model to estimate the demand for Tweetie Sweeties, a whistle-shaped, sugar-coated breakfast cereal for children. The following (multiplicative exponential) demand function is being used:

6. The demand for haddock has been estimated as log + b log P + c log I + d log Pm

where of haddock sold in New England per pound of haddock

measure of personal income in the New England region

index of the price of meat and poultry

a. Determine the price elasticity of demand. 

b. Determine the income elasticity of demand.

c. Determine the cross price elasticity of demand.

d. How would you characterize the demand for haddock? Apparently the Haddock is plentiful since it a white fish. New England has lots of ocean access to fish.

e. Suppose disposable income is expected to increase by 5 percent next year.

7. An estimate of the demand function for household furniture produced the following results:

 1.08 .16 -.48

Y R P 

where expenditures per household

personal income per household

of private residential construction per household

of the furniture price index to the consumer price index

a. Determine the point price and income elasticities for household furniture.

b. What interpretation would you give to the exponent for R? Why do you suppose R was included in the equation as a variable?

c. If you were a supplier to the furniture manufacturer, would you have preferred to see the analysis performed in physical sales units rather than dollars of revenue? How would this change alter the interpretation of the price coefficient, presently estimated as ?0.48?
	

general business data bank

Question
	

 

 

 
What is the model called that
 determines the present value of a stock based on its next annual dividend,
 the dividend growth rate, and the applicable discount rate?

 zero growth

 dividend growth

 capital pricing

 earnings capitalization

 discounted dividend 
 
 

 
 
 

 

 

 
Which one of the following is
 computed by dividing next year's annual dividend by the current stock price?

 yield to maturity

 total yield

 dividend yield

 capital gains yield

 growth rate 
 
 

 
 
 

 

 

 
Which one of following is the rate
 at which a stock's price is expected to appreciate?

 current yield

 total return

 dividend yield

 capital gains yield

 coupon rate 
 
 

 
 
 

 

 

 
Which one of the following types
 of stock is defined by the fact that it receives no preferential treatment in
 respect to either dividends or bankruptcy proceedings?

 dual class

 cumulative

 non-cumulative

 preferred

 common 
 
 

 
 
 

 

 

 
You cannot attend the
 shareholder's meeting for Alpha United so you authorize another shareholder
 to vote on your behalf. What is the granting of this authority called?

 altering

 cumulative voting

 straight voting

 indenture agreement

 voting by proxy 
 
 

 
 
 

 

 

 
What are the distributions to
 shareholders by a corporation called?

 retained earnings

 net income

 dividends

 capital payments

 diluted profits 
 
 

 
 
 

 

 

 
Which one of the following is a
 type of equity security that has a fixed dividend and a priority status over
 other equity securities?

 senior bond

 debenture

 warrant

 common stock

 preferred stock 
 
 

 

 

 

 

 
Callander Enterprises stock is
 listed on NASDAQ. The firm is planning to issue some new equity shares for
 sale to the general public. This sale will occur in which one of the
 following markets?

 private

 auction

 exchange floor

 secondary

 primary 
 
 

 
 
 

 

 

 
The secondary market is best
 defined by which one of the following?

 market in which subordinated shares are issued and resold

 market conducted solely by brokers

 market dominated by dealers

 market where outstanding shares of stock are resold

 market where warrants are offered and sold 
 
 

 

 

 

 

 
An agent who maintains an
 inventory from which he or she buys and sells securities is called a:

 broker.

 trader.

 capitalist.

 principal.

 dealer. 
 
 

 
r