Questions
Rank the locations A to F on the basis of the electric potential at each point.

In the figure there are two point charges, \(+q\) and \(-q\). There are also six positions, labeled A through \(\mathrm{F}\), at various distances from the two point charges. You will be asked about the electric potential at the different points (A through F).

A.) Rank the locations A to \(\mathrm{F}\) on the basis of the electric potential at each point. Rank positive electric potentials as higher than negative electric potentials.

For Part A.) Rank the locations from highest to lowest potential. To rank items as equivalent, overlap them.

In: Physics

In the figure there are two point charges, +q and -q.

In the figure there are two point charges, +q and -q. There are also six positions, labeled A through F, at various distances from the two point charges. You will be asked about the electric potential at the different points (A through F).


A.) Rank the locations A to F on the basis of the electric potential at each point. Rank positive electric potentials as higher than negative electric potentials.

For Part A.) Rank the locations from highest to lowest potential. To rank items as equivalent, overlap them.

In: Physics

A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm,

A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.23×105 Pa . The speed of sound in air is 344 m/s.

Part A

What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit?

    
f =   Hz

In: Physics

You possess the following three securities in a portfolio with their respective Beta values noted. Name...

You possess the following three securities in a portfolio with their respective Beta values noted.

Name

Beta

Percentage of portfolio

OKA Ltd

1.7

25%

Techno Ltd

0.9

37.5%

Dynamic Ltd

1.1

37.5%

Analyse and interpret the Beta values of each of the companies offering insight into the risk of each firm as represented by their Beta values. Which firm has provided the highest returns historically when the market has been performing well, all things being equal?

In: Finance

A firehose must be able to shoot water to the top of a building 28.0 m...

A firehose must be able to shoot water to the top of a building 28.0 m tall when aimed straight up. Water enters this hose at a steady rate of 0.500 m3/s and shoots out of a round nozzle. Neglect air resistance.

A) What is the maximum diameter this nozzle can have? Express your answer with the appropriate units.

B) If the only nozzle available has a diameter twice as great, what is the highest point the water can reach? Express your answer with the appropriate units.

In: Physics

Suppose a brewery has a filling machine that fills 12-ounce bottles of beer. It is known...

Suppose a brewery has a filling machine that fills 12-ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.10 ounces and a standard deviation of .04 ounces. The company is interested in reducing the amount of extra beer that is poured into the 12 ounce bottles. The company is seeking to identify the highest 1.5% of the fill amounts poured by this machine. For what fill amount are they searching? Round to the nearest thousandth. Please demonstrate with TI84 steps.

In: Statistics and Probability

Your boss has just contacted you about an inventory decision. It seems she is going to...

Your boss has just contacted you about an inventory decision. It seems she is going to expand the business by selling products along with providing consulting services. Your boss' questions are emailed to you as follows:

  • Which inventory costing method will provide the highest net income for the company?
  • The company definitely plans to sell the oldest inventory first; does this affect the inventory costing method? Why?
  • Are there any other considerations in making this decision?

Which method would you recommend and why?

In: Accounting

“The South African economy expanded an annualized 2.5 percent on quarter in the three months to...

“The South African economy expanded an annualized 2.5 percent on
quarter in the three months to June of 2017, ending two quarters of
contraction and beating market expectations of a 2.1 percent rise. It is
the highest growth rate in the year, with agriculture, forestry, and fishing
making the largest upward contribution..”

Although this growth rate is low it has managed to break the technical
recession in South Africa.
Use the AD-AS model to illustrate the effect of such growth on the
general price level and the level of aggregate output in the South
African economy.

In: Economics

Question 4 A. Show that a dominant bidding strategy in an English auction is to continue...

Question 4

A. Show that a dominant bidding strategy in an English auction is to continue bidding as long as the price in the auction is less than your true value of the good.

B. Suppose that there are six bidders in an English auction for an antique 1950s Vaporizer. Each has his or her own private value for the vintage machine. In ascending order, these values are $50, $60, $70, $80, $90, and $100.

a. What will be the winning bid?

b. What will be the winning bid if the highest three bidders collude?

In: Economics

According to economic theory, if a resource is scarce then it should bring a high return...

According to economic theory, if a resource is scarce then it should bring a high return in its use. Capital and technology are scarce in the world and given economic theory, should flow to the place of highest return. Since capital and technology are most scarce in the developing world relative to the developed world, capital should flow from the developed world to the developing world. However, if the data is examined, capital seems to flow from the developing world to the developed world. Is this a violation of economic theory? Explain

In: Economics