ESSAY PART:

A group of students of students wants to build an apparatus that produces a mirage of an object. For this purpose, they need to know the radius of curvature of the concave mirror they are using. Please explain how they can achieve their goal? Make sure to indicate variables, equipment necessary and possible procedure. (10pts) Also on the space labeled Experimental setup sketch your apparatus.

Experimental Setup: (5 pts)

1. The students completed their corresponding measurements and obtained the following data:

Complete the above table by manipulating the data so that you are able to determine the focal length of the mirror. (20pts)

2. Graph your manipulated data. (20 pts)

3. Write the mathematical equation describing the relationship. Explain the physical meaning of the slope and the y-intercept. (30 pts)

Mathematical Equation: ____________________    Meaning of the Slope:             Meaning of the y-intercept:

4. Determine the radius of curvature of the mirror: (5 pts)
5. The mirror has a radius of curvature of 14.8 cm. Determine the percentage error of the experiment. (5 pts)

. The learning styles of students in a university biology course were measured and the students were divided into two groups depending on their propensity towards visual learning (style 1) versustext-based learning (style 2). Severalteaching interventions aimed at visual learners were introduced into the course and the instructors scored the students as to whether or not they showed learning gains compared to the usual text-based materials. The results are given in the table below. Conduct a Chi-square analysis to determine if learning gains were contingent of learning style. Discuss the results and state your conclusions. LS1/Yes:28, LS1/No:10, LS2/Yes:48, LS2/No:114

SIU is a university in the UK catering for international students. There are currently 950 students. Fees were £16,000 for the last year and the president is concerned that adverse changes in the economic and educational environment are threatening the university’s future. The income of the market is expected to decline next year by 2%, and it is also expected that the average fee of competitive institutions will fall from £14,000 to £12,000. 10% of revenue is currently spent on promotion. The president does some research and estimates that the relevant demand elasticities are as follows:

PED = -1.6, YED = 2.2, AED = 1.8, CED = 0.8.

1. Briefly outline other marketing mix options for achieving the target (50 words).

SIU is a university in the UK catering for international students. There are currently 950 students. Fees were £16,000 for the last year and the president is concerned that adverse changes in the economic and educational environment are threatening the university’s future. The income of the market is expected to decline next year by 2%, and it is also expected that the average fee of competitive institutions will fall from £14,000 to £12,000. 10% of revenue is currently spent on promotion. The president does some research and estimates that the relevant demand elasticities are as follows:

PED = -1.6, YED = 2.2, AED = 1.8, CED = 0.8.

1. If fees are maintained at their current level, estimate the amount that would need to be spent on promotion to achieve the target.

Which of the following statements is FALSE? Select one: a. With a discount loan, the borrower is required to pay the interest at the end of the loan period. b. A bridge loan is another type of short-term bank loan that is often used to "bridge the gap" until a firm can arrange for long-term financing. c. Bridge loans are often quoted as discount loans with fixed interest rates. d. After a natural disaster, lenders may provide businesses with short-term loans to serve as bridges until they receive insurance payments or long-term disaster relief.

Which of the following statements is FALSE?

Select one:

a. Inventory helps minimize the risk that the firm will not be able to obtain an input it needs for production.

b. Firms may hold inventory because factors such as seasonality in demand mean that customer purchases do not perfectly match the most efficient production cycle.

c. Because excessive inventory uses cash, efficient management of inventory increases firm value.

d. If a firm holds too much inventory, stock-outs, the situation when a firm runs out of product, may occur, leading to lost sales.

Clear my choice

Identify these elements of your state and local budget process:

a. Does your state have an annual or a biennial budget? Does it appear to have a separate budget for acquisition of capital assets (buildings, roads, bridges, etc)? South Carolina or Georgia

b. What units direct the preparation of the executive budget/ (Not all states have an executive budget.)

c. How many appropriation bills are usually passed?

d. How much object-of-expenditure detail appears in these bills?

e. What item-veto power, if any, does the governor have? Can the governor change the amounts in appropriations bills or is the veto limited to total amounts?

f. Is the budget process described on a state website? Does the website have the budget instruction issued to state agencies?

g. Is the state budget easily accessible on the state website?

h. Does the website provide information on the agency requests, in additions to the executive proposal and adopted appropriations? The National Association of State Budget Officers provides much of this information in its publication Budget Process in the States, which may be accessed at its website [http://www.nasbo.org].

In 2003, London established a congestion charge for cars and vehicles entering the central London area. Today, motorists entering the charge zone area pay a flat rate of £11.50 (around $22AUD), debited through a scanner. Failure to pay the charge results in a penalty of £130. Currently, electric cars and some low-emmission hybrids receive free entry to the zone. Net revenue from the charge is used to invest in public transport, improved roads and bridges, and create walking and cycling paths. What economic problem (or problems) do you think the congestion charge is trying to solve? Explain how the congestion charge might help to solve these problems.

B)After the charge was introduced, the number of vehicles entering the zone fell by about one-third, riders on buses increased by 15%, and bicycle use increased by 30%. Using principles of microeconomics, what explanations can you give for these changes in the behaviour of drivers?

C)Suppose the charge is increased by 15%, and revenue from the charge scheme increases by 20%. Explain why revenue has increased at a faster rate than price in this case

Use the aggregate demand/aggregate supply framework to answer the following questions:

(a) A sharp decline in the stock market due to an increase in corporate bankruptcies leads to a decline in consumer and business confidence. What effect would you expect this shock to have on output and inflation in the short-run?
(b) The US government decides to lower military expenditures to reduce the budget deficit. What effect would you expect this shock to have on output and inflation in the shortrun?
(c) State and local governments increase infrastructure spending on highways and bridges boosting potential output. What effect does this shock have on output and inflation in the short-run? What effect does this shock have on output and the inflation in the long-run if monetary policy does not respond?
(d) A surge in violence in the Mideast causes a temporary spike in global oil prices. What effect would you expect this shock to have on output and inflation in the short-run?
(e) A temporary tax rebate is enacted by Congress in an effort to boost reelection prospects. What effect would you expect this shock to have on output and inflation in the shortrun?

Which off the following does NOT occur during skeletal muscle contraction?

Titin fibers compress

Actin and myosin shorten

Sarcomers shorten

2. Action potential propagated along the sarcolemma stimulate ___________ located on transverse tubules.2.

Nicotinic receptors

Ryanodine receptors

DHP receptors

3. Which of the following does not occur during the "Excitation" of a skeletal muscle?

Group of answer choices

The cell membrane depolarizes

ATPase on myosin heads split ATP

The myosin head binding site on actin is exposed

The passive force of contraction increases

4. What happens as an IMMEDIATE result of Ryanodine receptors on the sarcoplasmic reticulum being stimulate?

Ryanodine receptors simulate DHP receptors on T-tubules

Myosin cross bridges are formed

Calcium ions diffuse out of the saroplasmic reticulum

5. Why does lactic acid produced during anaerobic metabolism cause fatigue?

Because H+ from lactic acid interfers with crossbridge formation

Because lactic acid produced duirng anaerobic metabolism produces only 2 molecules of ATP

Because the myosin head is denature by lactic aci