Blue light of wavelength 470 nm is used to illuminate a pair of narrow slits that are 0.020 mm apart and 1.60 m from a screen.

(a) What is the angular position of the second-order minimum (dark spot)?

(b) What is the distance on the screen between the central maximum and the second-order

minimum?

(c) The reason there is a dark spot at this location on the screen is because light from one slit has

to travel further than light from the other slit. What is this extra distance in terms of wavelengths

(or half wavelengths)?

(d) Circle one word from each underlined pair:

If you wanted a narrower interference pattern (i.e. you wanted to decrease the angle and distance

you found in parts (a) and (b)), you could use yellow / violet light instead of blue light, or you

could increase / decrease the distance between the slits.

A portfolio consists of two assets, Investment A and Investment B.

Market Value of Investment A at beginning of period: $600

Market Value of Investment B at beginning of period: $300

Investment A has an expected return of 8%

Investment B has an expected return of 3%

Investment A has a standard deviation (volatility) of returns 15%

Investment B has a standard deviation (volatility) of returns of 6%

The correlation of returns for Investment A and Investment B is 20%

Word or Excel spreadsheet items.

1. Calculate the portfolio standard deviation (volatility) of returns. Show your work.
2. If the correlation of returns was negative 20%, i.e., -20%, what is the portfolio standard deviation (volatility) of returns? Show your work.
3. Did risk increase or decrease when the correlation declined from 20% to -20%? Why? Briefly explain your answer using non-mathematical terminology.

1. A search using the Web search engine Bing^TM for "asteroid" yielded 24.8 million Web sites containing that word. A search for "comet" yielded 95.0 million sites. A search for sites containing both words yielded 3.8 million sites. How many Web sites contained either "asteroid" or "comet" or both? HINT [See Example 1.]
million sites

2. On a particularly boring transatlantic flight, one of the authors amused himself by counting the heads of the people in the seats in front of him. He noticed that all 26 of them either had black hair or had a whole row to themselves (or both). Of this total, 23 had black hair and 8 were fortunate enough to have a whole row of seats to themselves. How many of the black-haired people had whole rows to themselves?
people

POST #1 (ANSWER ONE OF THE QUESTIONS)

I POST IT TWICE, DONT ANSWER TO BOTH POST. DO NOT COPY YOUR ANSWER TO BOTH POSTS. I NEED TWO DIFFERENT VIEW. Thanks

**DO NOT UPLOAD PHOTOS TO ANSWER MY QUESTION

*****DO NOT COPY FROM ANY WEBSITE. USE YOUR OWN WORD. DO NOT ANSWER IF YOU ARE NOT COMFORTABLE FOR ANY RESON.

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***PLEASE JUST ANSWER THE QUESTION. IT NEED TO BE 150 WORDS.

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Instructions:

Watch the following videos, then answer ONE of the questions below: (150 WORDS)

https://www.youtube.com/watch?time_continue=15&v=9Os7LDOOJao

https://www.youtube.com/watch?time_continue=1&v=BzWWL2LXoNk

Discussion Questions:

How was America affected by the Cold War?

Why did the policy of “containment” develop and what were its goals?

How did the fear of Communism and the “red scare” affect American society during the 1950s?

Option 1 – the Reference Letter

Background

You need a reference letter from someone to accompany a resume and job application. When you ask the referee to write you a letter of reference, they state they would be happy to, but they are very busy. They ask you to draft a letter of reference that they will review, revise, and sign.

Your Assignment

Draft a 250-word (maximum) reference letter for yourself. Write it as if someone else is writing about you.  

Use proper business letter format with FULL BLOCK formatting. If you need to make up any details such as addresses, that is fine. You may address your letter to me if you wish.

Remember you will be writing about yourself. Think about the best qualities you have that would recommend you for a job in your chosen field. What would you like to have highlighted for a specific potential employer?

Please answer the following question in your own words in 450 word count. Please cite 5 academic/professional references published in last 5 yrs.

You work for a health care organization that frequently needs to share information with other providers. Your organization has a very important relationship with a diagnostics center in particular where you frequently need to share patient information such as lab results, X-rays, and other diagnostic information. You have been asked to review your company's protocols on sharing and receiving patient information for outside providers to ensure that your organization is in compliance with the latest standards and regulations.

Write an executive summary that examines the compliance procedures and practice guidelines that these organizations would need to establish to achieve optimum operational effectiveness while complying with federal, state, and local laws governing patient information security and records retention.

"Measuring Firm performance."

Then, each of you pick a firm, and do out the following:

Find and report its current P/E ratio.

Calculate and report on any two of its ratios: its ROE, CR, D/E ratio or TAT for two years. Ideally use 2016 and 2017, and if 2017 numbers are unavailable, use 2015 and 2016.

Write a brief (100 word) paragraph comparing its performance over the two years:2016 and 2017 (or 2015 and 2016).

Everyone please use a different firm, if a teammate has used it, you cannot. The firms are:

AMD

Apple

Bank of America

Berkshire Hathaway

CVS (Caremark)

Disney

Exxon-Mobil

Facebook

Ford

GM

Google

Home Depot

Intel

Lowes

Microsoft

New York Times (NYTCO)

Pfizer

Proctor & Gamble

Twitter

Viacom

Walmart

Yahoo

Everything we do on this planet leaves a mark. An ecological footprint is the degree of human impact on our ecosystems. Americans are at the top of the list for their detrimental footprints on our ever-increasing fragile planet. How does your personal footprint compare to others in America or others around the world? Do you personally do things which should help to lessen your footprint? Have you within recent years changed your habits or actions to help the planet? Do you think that global warming and destruction of our planet is severe, or do you think it is all public hype? Are the Earth's forests disappearing? Does it matter if they are? Is there any hope for our planet? What are your suggestions or concerns? List at least one source from your research. MUST BE IN YOUR OWN WORDS.

WORD COUNT 250

A client at a software design company wants assistance processing
their documents.  After interviewing the client you find that their
documents consist of a one sentence title, a date, and a series of
paragraphs.  Each paragraph is a simple list of sentences.  Paragraphs
are separated by new lines.  Each document also has an author (first
and last name) and a document access level (open, internal or
confidential).

 At a minimal level the client would like the software to be able to:
* Count the number of words in the document (with or without the
  title)
* Count the number of characters in the document
* Print out a document
* Print out the date of the document
* Print out the author of the document

Additional desirable features:
* Count the number of a particular type of word (noun, verb, proper
  noun or other) 
* Given a title, date, author and a string for the remaining document,
  create a document file
* Spell check the document 

QUESTION 2

1. Company ABC produces a single product. This year the company produced 20,000 units but only sold 15,000 units at the price of $40 each. Variable manufacturing costs (including direct materials, director labor, and variable manufacturing overhead) total $10 per unit. Variable selling and administrative cost is $5 per unit. Fixed manufacturing overhead cost is $100,000 each year. Fixed selling and administrative cost is $80,000 each year. There is no inventory at the beginning of this year.

Required: (Please note that you should answer the questions in Word offline and please do NOT answer in the Blackboard!!!)

1. What is the net operating income this year using the absorption costing method? Please prepare the absorption costing income statement.
2. What is the net operating income this year using the variable costing method? Please prepare the variable costing income statement.