Billiard balls of identical mass roll on a table, and we can ignore the small friction between the balls and the table. The cue ball travels east at a speed of 10 m/s and hits the 8 ball which is initially stationary. After the collision the cue ball travels at a speed of 3 m/s 10 degrees south of its initial eastward heading. What is the magnitude of the velocity of the 8 ball after the collision in m/s? Enter only the number to two significant figures.
In: Physics
In a park: a 75 kg bicyclist rides 5.8 m/s north; a 24 kg dog runs 3 m/s east chasing a 3.3 kg squirrel running 2.6 m/s the same way; 200 kg park bench remains stationary; and a 43 kg child runs 1 m/s 45◦ south of east. What is the magnitude of the total momenta of this park system?
Report the value in kg*m/s rounded to the nearest whole number.
In: Physics
In: Statistics and Probability
most developing countries such as South Africa, Zambia,Tanzania,Mozambique, Nigeria etc, are battling to contain inflation at a desirable levels. on the other hand, some developed economies are battling with deflation. using relevant macroeconomic theories to support your arguments:
a) write a detailed review of the challenges posed by deflation within an economy. your answer should cover all sectors including the business,government and the society as well as other macroeconomic indicators (GDP, unemployment, interest rate etc).
In: Economics
In an attempt to escape from a deserted island, a castaway builds a raft and sets sail for the sea. The wind changes a lot during the day and flies along the following straight lines: 2.60 km and 45.0 ° north of west, then 4.80 km and 60.0 ° south of east, then 1.60 km and 5.00 ° east of north, and finally 2.70 km and 13.0 ° north of the east. Use the analytical method to find the resulting vector of all its displacement vectors. What is its magnitude and direction?
In: Physics
Problem 9.41
A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular to each other, at 20 m/s . The third piece has twice the mass as the other two.
Part A
What is the speed of the third piece?
Express your answer using two significant figures.
Part B
What is the direction of the third piece? Give the direction as an angle east of north.
Express your answer using two significant figures.
In: Physics
There is a high level of uncertainty in the global economy as a result of COVID-19, which has negatively affected global trade. The impact of this pandemic has left even the most developed economies crippled.
B
In light of the above statement critically discuss the benefits that would have accrued to Nigeria and South Africa, had the two countries been able to take full advantage of the African Continental Free Trade Agreement (AfCFTA) as they both offer large export markets for agricultural products.
[25 Marks]
In: Operations Management
Question 1 (Inflation and the Macroeconomy)
Distinguish between demand-pull inflation and cost-push inflation
and then use an AD-AS (aggregate demand/aggregate supply) model to
illustrate the theoretical effects of these two types of inflation
on the price level (P), employment (L) and economic growth (real
GDP) in the short run. Now identify the various factors that have
contributed towards demand-pull inflation and cost-push inflation
in South Africa and critically analyse whether they are consistent
with the predictions of the AD-AS model.
In: Economics
Selected operating data for two divisions of Outback Brewing, Ltd., of Australia are given below:
| Division | ||||
| Queensland | New South Wales | |||
| Sales | $ | 864,000 | $ | 2,016,000 |
| Average operating assets | $ | 540,000 | $ | 630,000 |
| Net operating income | $ | 60,480 | $ | 80,640 |
| Property, plant, and equipment (net) | $ | 247,000 | $ | 197,000 |
Required:
1. Compute the rate of return for each division using the return on investment (ROI) formula stated in terms of margin and turnover.
2. Which divisional manager seems to be doing the better job?
In: Accounting
1. During an ‘economic contraction’, why is it likely that the federal government budget will move into deficit?
2. Identify and discuss whether each of the following is: an expansionary fiscal policy; a contractionary fiscal policy; or not a fiscal policy.
i. The personal income tax rate is lowered.
ii. The government increases spending on defence due to a change in spending priorities.
iii. The company income tax rate is lowered.
iv. New South Wales builds a new tollway to expand employment and ease traffic congestion.
In: Accounting