12. Your friend with great excitement tells you about his newest idea to solve the energy crisis: He wants to use an electromotor to drive a generator and then use part of the electric power generated to power the electromotor while using the rest to power his home. What would you tell him?

1. can you please use your own words to tell me what is the difference between capital budgeting screening decisions and capital budgeting preference decisions?

2. use your own words to tell me what is meant by the term 'time value of money".

3. What is net present value (NPV)? Can it ever be negative? Explain in your own words.

4. How is the project profitability index computed, and what does it measure?

PHP programming language Circle Area, Circumference and ratio:  For a circle with a given radius, write a program to compute 1) area of the circle, 2) circumference of the circle and 3) the ratio of the circumference to its diameter.  You will use 3 different values of radius a) 10cm, b) 50 cm, and c) 100cm for your computations. The output should print or echo the following statements identifying the writer of the program and the computation for each value of the radius. Example: "This program was created by $Yourname. The area of the circle with radius 10cm is 314 square centimeters. Its circumference is 62.8cm and the ratio of its circumference to its diameter is 3.14" .  You will use variables to store the values of for each radius and for your computations along with your name.  Save the php file with yourlastnameCircle.php and also add your name in the comments section of the program. Following are the formulas needed for computation:

> How far in front of or behind the retina is the point of sharp focus for red light? Express your answer with the appropriate units. Enter positive value if the point of sharp focus is behind the retina and negative value if the point of sharp focus is in front of the retina.

Δs′red = ___ (value) ___ (units)

> How far in front of or behind the retina is the point of sharp focus for blue light? Express your answer with the appropriate units. Enter positive value if the point of sharp focus is behind the retina and negative value if the point of sharp focus is in front of the retina.

Δs′blue = ___ (value) ___ (units)

The authors of a paper describe an experiment to evaluate the effect of using a cell phone on reaction time. Subjects were asked to perform a simulated driving task while talking on a cell phone. While performing this task, occasional red and green lights flashed on the computer screen. If a green light flashed, subjects were to continue driving, but if a red light flashed, subjects were to brake as quickly as possible. The reaction time (in msec) was recorded. The following summary statistics are based on a graph that appeared in the paper.

n = 47      x = 53   s = 65

a) Construct a 95% confidence interval for μ, the mean time to react to a red light while talking on a cell phone. (Round your answers to three decimal places.)

(_________ , _________)

b) Suppose that the researchers wanted to estimate the mean reaction time to within 7 msec with 95% confidence. Using the sample standard deviation from the study described as a preliminary estimate of the standard deviation of reaction times, compute the required sample size. (Round your answer up to the nearest whole number.)

n = ?

• How has the U.S. economy been doing in recent years? Why do you think that is? Gather relevant economic statistics, such as the growth rate of real GDP, the unemployment rate, and the inflation rate, to support your case. (Hint: use the information we’ve covered and you’ve researched in the data project about GDP, business cycles, unemployment, and inflation to build your argument).
• Did any of the data from the project surprise you? Which data? Why? Does this data indicate a growing, stagnant or declining economy? What does this data tell you about the health of our economy? Why?
• Find a current news or journal article that describes our current economy and that supports your opinion. Summarize the article and indicate how it supports your opinion. Use sound economic reasoning.

Choice 1. You are the new software developer at work. You are brought into a meeting with clients that do not understand the idea of sorting data. Now you know, that you cannot use complex math to explain, but you can illustrate in diagrams. Basically, this group has been working with unsorted data and you must explain why their searches and reports will be so much faster with sorted data. You do not know anything specific about their data, but you want to sell them on the idea that their data should get sorted to quickly fulfill their current demands.

Illustrate how quicksort, insertion sort, and merge sort work. The idea of this is to show the clients that sorting is very common and beneficial.

Explain the following:

• Why sorting is beneficial to searching?
• How each sort works? What data type or structure does it work best on?
• The benefits or possible issues when the number of items being sorted increases (big 0, for non Big 0 people).
• Use for each sort a set of 9 numbers and diagram each set for each sort. So....that means you would have 3 sets of diagrams.
• Attach your files when you are finished.

Remember, you want to explain but not make it too complicated.

The use of social media as a marketing tool is only suitable for developed countries. It is not an effective tool for businesses in Small Island Developing States (SIDS) such as the Caribbean.” provide detail point agreeing with the statement and disagreeing with the statement.

1. screw pump test rig in detail

2. general use screw pump

3. identify its accuracy, precision and time respond in getting a reading.

4. the advantage and disadvantage of screw pump.