Astronomy:
6.What is a brown dwarf? Is it different from a proto-star? How?
7. What different types of gas do astronomers find in the interstellar medium?
8. Astronomers believe the Sun formed with other stars near the Orion Nebula. If that is true, why is the Sun here and not there?
9. Astronomers can tell the age of a star by the age of its cluster. How is this determined?
In: Physics
In: Civil Engineering
An extremely thin sheet of glass is being inspected at the factory. Illuminated by white light at near-normal incidence, the film-like sheet is 0.402 µm thick and has air on both sides. If the glass has a refractive index of 1.52, what wavelength of visible light (in nm) does it reflect most strongly? (The wavelengths of visible light range from 400 to 700 nm.)
In: Physics
Please prepare a PowerPoint presentation of the following case.
During the late 1980s, the decline in Akron’s tire industry, inflation, and changes in governmental priorities almost resulted in the permanent closing of the Akron Children’s Zoo. Lagging attendance and a low level of memberships did not help matters. Faced with uncertain prospects of continuing, the city of Akron opted out of the zoo business. In response, the Akron Zoological Park was organized as a corporation to contract with the city to operate the zoo.
The Akron Zoological Park is an independent organization that manages the Akron Children’s Zoo for the city. To be successful, the Zoo must maintain its image as a high-quality place for its visitors to spend their time. Its animal exhibits are clean and neat. The animals, birds, and reptiles are carefully looked after. As resources become available for construction and continuing operations, the Zoo keeps adding new exhibits and activities. Efforts seem to be working, because attendance increased from 53,353 in 1989 to an all-time record of 133,762 in 1994.
Due to its northern climate, the Zoo conducts its open season from mid-April until mid-October. It reopens for one week at Halloween and for the month of December. Zoo attendance depends largely on the weather. For example, attendance was down during the month of December 1995, which established many local records for the coldest temperatures and the most snow. Variations in weather also affect crop yields and prices for fresh animal foods, thereby influencing the costs of animal maintenance.
In normal circumstances, the zoo may be able to achieve its target goal and attract an annual attendance equal to 40% of its community. Akron has not grown appreciably during the past decade. But the Zoo became known as an innovative community resource, and as indicated in the table, annual paid attendance has doubled. Approximately 35% of all visitors are adults. Children account for one-half of the paid attendance. Group admissions remain a constant 15% of zoo attendance.
The Zoo does not have an advertising budget. To gain exposure in its market, the Zoo depends on public service announcements, its public television series, and local press coverage of its activities and social happenings. Many of these activities are but a few years old. They are a strong reason that annual zoo attendance has increased. Although the Zoo is a nonprofit organization, it must ensure that its sources of income equal or exceed its operating and physical plant costs. Its continued existence remains totally dependent on its ability to generate revenues and to reduce its expenses.
Source: Professor F. Bruce Simmons III, University of Akron.
|
YEAR |
ATTENDANCE |
ADMISSION FEE ($) |
||
|
ADULT |
CHILD |
GROUP |
||
|
1998 |
117,874 |
4.00 |
2.50 |
1.50 |
|
1997 |
125,363 |
3.00 |
2.00 |
1.00 |
|
1996 |
126,853 |
3.00 |
2.00 |
1.50 |
|
1995 |
108,363 |
2.50 |
1.50 |
1.00 |
|
1994 |
133,762 |
2.50 |
1.50 |
1.00 |
|
1993 |
95,504 |
2.00 |
1.00 |
0.50 |
|
1992 |
63,034 |
1.50 |
0.75 |
0.50 |
|
1991 |
63,853 |
1.50 |
0.75 |
0.50 |
|
1990 |
61,417 |
1.50 |
0.75 |
0.50 |
|
1989 |
53,353 |
1.50 |
0.75 |
0.50 |
Questions
In: Statistics and Probability
4. Using the popular Utility function U=E(r) - 0.5*A*Variance(r), what is the utility for an investor with risk-aversion index of 3, whose portfolio has an expected return of 7% and a standard deviation of 16%?
Report 2 decimals in your answer
6. South Park Company's stock has an expected Return of 6.56% while Quahog Company's stock has an expected return of 3.8%. What % of my wealth should I invest in Quahog Company's stock to have an expected return of 10.86%? Report you answer as a % with 2 decimals. If your answer is 3.56%, just enter/type "3.56"
In: Finance
5. When consumer demand for hotel rooms increases, the average selling prices for those rooms typically increase as well. In the foodservice business that has not historically been the case. Fluctuations in consumer demand (e.g., volume differences between high demand Saturday nights and lowervolume Sunday nights) in restaurants do not typically result in menu price changes. Given that both hotels and restaurants are part of the hospitality industry, how do you account for these fundamental differences in approach toward strategic pricing? As a customer, which approach do you believe sends you the better value message? Explain your position.
In: Operations Management
Tesco plc wants to expand but foresees little exponential growth in its current retail activities. The company has, therefore, decided to utilise their ability to raise funds and their cash generation ability to organically expand into the hotel industry. Tesco feels that the market is open to a new participant and that companies such as Intercontinental Hotels Group plc are not ready for a vibrant new competitor. Tesco could expand by undertaking ‘organic’ growth orcould undertake the indicated growth by acquisition. You are required to provide a critical analysis of the relative benefits of the two types of growth (i.e. ‘organic’ and acquisition) from Tesco’s point of view, with regard to the proposed expansion.
In: Finance
A 25.25 kg child is riding a playground merry-go-round that is rotating at 35.5 rev/min.
(A) What net force is acting on her if she is standing on the merry-go-round 1.4 m from its center in newtons? The net force in this situation is sometimes called "centripetal force".
(B) What net force (in N) is acting on her if she is standing on an amusement park merry-go-round that rotates at 3.2 rpm and she is 7.6 m from its center?
(C) How many times her weight is the force in part (a)?
(D) How many times her weight is the force in part (b)?
In: Physics
Edgewater Motels, Inc v Gatzke and Walgreen Company: Gatzke worked as a district manager for Walgreens. He was staying at the Edgewater Motel while he was working in Minnesota “on call 24 hours a day" for Walgreens. A fire occurred in his hotel room from a lit cigarette he dropped into the waste paper basket. The fire caused massive damage and Edgewater sued both Gatzke and Walgreens. Both were found liable for the damages.
Why do you think Walgreens would be responsible for the action of Gatzke. Was he still working when the fire took place? Can you make an argument that Walgreens is not liable?
In: Economics
In: Operations Management