(a) In a dropping mercury electrode (dme), a new measurement is made on each drop. The drop size can be controlled by the diameter of the capillary which feeds the dme. Discuss advantages and disadvantages of using a small drop vs. a large drop.
(b) Discuss the differences between the hydrodynamic boundary layer and the diffusion boundary layer near the surface of a rotating disk electrode.
(c) Discuss advantages and disadvantages of linear vs. cyclic voltammetry.

Investor A makes a cash purchase of 200 shares of AB&C common stock for $60 a share. Investor B also buys 200 shares of AB&C but uses margin. Each holds the stock for one year, during which dividends of $6 a share are distributed. Commissions are 3 percent of the value of a purchase or sale; the margin requirement is 60 percent, and the interest rate is 10 percent annually on borrowed funds.

A.

What is the percentage earned by investor A if he or she sells the stock after one year for $45? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $45? Round your answer to one decimal places.
%

B.

What is the percentage earned by investor A if he or she sells the stock after one year for $60? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $60? Round your answer to one decimal places.
%

C.

What is the percentage earned by investor A if he or she sells the stock after one year for $65? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $65? Round your answer to one decimal places.
%

D.

What is the percentage earned by investor A if he or she sells the stock after one year for $75? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $75? Round your answer to one decimal places.
%

Now the question changes

If the margin requirement had been 40 percent, what would have been the annual percentage returns?

A.

What is the percentage earned by investor A if he or she sells the stock after one year for $45? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $45? Round your answer to one decimal places.
%

B.

What is the percentage earned by investor A if he or she sells the stock after one year for $60? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $60? Round your answer to one decimal places.
%

C.

What is the percentage earned by investor A if he or she sells the stock after one year for $65? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $65? Round your answer to one decimal places.
15% (I got this one right I am not sure how)

D.

What is the percentage earned by investor A if he or she sells the stock after one year for $75? Round your answer to one decimal places.
%

What is the percentage earned by investor B if he or she sells the stock after one year for $75? Round your answer to one decimal places.
%

Please show your work I want to learn this. Honestly if you just show me how to do the first few of both sections (part 1 &2) it would be greatly appreciated and help me learn this for my test later in the semester. Thanks.

Twenty-five wooden beams were ordered for a construction project. The sample mean and the sample standard deviation were measured: x¯=180 cm, s=1 cm⁢. Calculated confidence interval for the mean is [179.59;180.41].

Which confidence level was chosen? Assume distribution to be normal.

1. Conceptually describe how you would evaluate the initial grade of the new segmental culvert so that in its final condition (i.e. after all settlement is complete) it slopes with a 4% grade. The culvert will be installed prior to construction of the embankment (i.e. the embankment will be filled over the culvert).

Explain the procedure for construction of departmental income statement in an enterprise in which several separate departments function. Provide an example of a departmental income statement in which at least three shared indirect costs are divided according to three different appropriate allocation bases. Explain your example 

Crane stability is one of the major concerns to construction managers when it comes to site safety. There are several factors involved with the safety that you as a manager need to carefully consider. List at least three factors associated with the crane safety or stability issue and briefly discuss each of the factors.

Economics verses civics

The World Bank supported a project in Cairo to build a highway to rural agricultural communities so that they would be able to sell their produce in the city. The smog from the highway is deleterious to the sphinx, resulting in protests. What are the issues – would you support the highway’s construction ?

Concepts and connections 10.3 provides a sampling of motivational tactics employed by several companies (many of which appear on fortune’s list of the 100 best companies to work for in America). Discuss how rewards at SAS, Salesforce.com, DPR Construction and Hilcorp aid in the strategy execution of each company.