Magnetism

What types of poles are there and how do they interact?

Explain three situations in which a magnetic force will interact. (hint: two poles, current carrying wire, moving

charge)

What affects the induced current of a coil in a magnetic field?

Marin Construction Company began work on a $424,000 construction contract in 2020. During 2020, Marin incurred costs of $279,500, billed its customer for $204,500, and collected $170,500. At December 31, 2020, the estimated additional costs to complete the project total $150,500. Prepare Marin’s journal entry to record profit or loss, if any, using (a) the percentage-of-completion method and (b) the completed-contract method. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No entry" for the account titles and enter 0 for the amounts. Round answers to 0 decimal places, e.g. 5,275.)

What is the most important characteristic of muscle architecture that dictates its maximal force production?

a.) Tendon length b.) Number of sarcomeres in series c). Anatomical cross-sectional area d). Physiological cross-sectional area

A chemist weighed out 1.654 g of a mixture containing unknown amounts of iron (Fe) and lead (Pb) and placed the sample in a 0.500 L flask containing O2 (g) at 24.0 C and 846 torr. After heating, the reaction to form Fe2O3(s) and PbO2(s) was completed, the vessel was cooled to 24.0 C and the pressure of O2 (g) remaining was 452 torr. Calculate the mass percentage of lead in the mixture. Molar masses (g/mol) : PbO2: 239.20; Fe2O3: 159.69; Pb: 207.20; Fe: 55.85

Question 21

1. Vibrios are bacteria that have.....

   	A.	Comma shape
   	B.	Rod shape
   	C.	All are correct
   	D.	Spiral shape

2.5 points

Question 22

1. Fungal hyphae in which two genetically distinct kinds of……………………occur together are said to be heterokaryotic

   	A.	Nuclei
   	B.	Chloroplast
   	C.	Parenchyma cells
   	D.	Flagella

2.5 points

Question 23

1. ............................occurs in vascular plants which have microspores and megaspores

   	A.	Algae
   	B.	Diatom
   	C.	Heterospory
   	D.	Bacteria

2.5 points

Question 24

1. The first plants clearly evolved from an organism that, if it existed today, would be classified as a multicellular…………………

   	A.	Cyanobacteria
   	B.	Bryophyte
   	C.	Green algae
   	D.	Meristematic tissue

2.5 points

Question 25

1. Chloroplasts are descended from

   	A.	Plasmid
   	B.	Fern frond
   	C.	Cyanobacteria
   	D.	Trypanosoma

2.5 points

Question 26

1. Shigella species causes

   	A.	Measles
   	B.	Pneumonia
   	C.	Bacterial descentry
   	D.	Chicken pox

2.5 points

Question 27

1. Which of the following statement is not true about protists?

   	A.	Protists have cuticle
   	B.	Photosynthetic protists are at the base of aquatic food chain
   	C.	Protozoan are the heterotropic unicellular protist
   	D.	Euglena is a photosynthetic protist

2.5 points

Question 28

1. Humankind's most prevalent diseases are caused by phylum apicomplexan which are protists consist of endoplasmic protozoan. Which of the following disease is caused by these protists?

   	A.	Head injury
   	B.	Malaria (by Plasmodium)
   	C.	Fungal infection
   	D.	Any physical trauma

2.5 points

Question 29

1. Which of the following is true regarding photosynthetic protists?

   	A.	They are called lichens
   	B.	They are called photoautotroph
   	C.	They are parasites
   	D.	They do genetic transduction

2.5 points

Question 30

1. What does Lichen mean?

   	A.	Helpful symbiotic relationship between blue/green algae (cyanobacteria)  with filamentous fungus
   	B.	It is an insect
   	C.	It is harmful for mankind
   	D.	All are correct

When exposed to air, aluminum metal, Al, reacts with oxygen, O2, to produce a protective coating of aluminum oxide, Al2O3, which prevents the aluminum from rusting underneath. The balanced reaction is shown here: 4Al+3O2→2Al2O3

What is the theoretical yield of aluminum oxide if 2.20 mol of aluminum metal is exposed to 1.95 mol of oxygen?

Six Measures of Solvency or Profitability

The following data were taken from the financial statements of Gates Inc. for the current fiscal year.

Assuming that total assets were $4,471,000 at the beginning of the current fiscal year, determine the following. When required, round to one decimal place.

Write a program, which will act as a simple four-function calculator. That is, it will read a number, read an operator, read another number, then do the operation. The calculator works with integers and uses four functions: +, -, *, and /. After the first operation is completed, the program will read another operator and uses the result of the previous operation as the first value for the next operation. If the user enters either an upper- or lower-case C the result is cleared and then the user starts entering a new number. If the user enters an X, the calculator is turned off. The various input values (i.e. numbers, operators, commands) will be followed by the ENTER key. Your program should prompt the user on what the user is to do. The commands C and X may be entered in place of an operator.

NOTES:

The person using the calculator has a terrible time using a keyboard and may not always enter a valid operator. If this happens the program should ask for another operator. Regardless of the math operation attempted, the program must not die. If the math operation would cause a fatal error in your program you should check for it and issue an error message rather than attempting the operation.

Please write the code for C programming, not C++ or Java

USE PYTHON ONLY

Please write a Python program to let you or the user play the game of rolling a dice and winning/losing money. Initially, you have 100 dollars in your account. You place a bet to roll the dice. The game will be stopped if your bet is zero. First, dealer would roll the dice and get a number from random.randint(1, 6). Then, you would roll the dice and get a number from random.randint(1, 6). Now, compare your number with dealer’s number to see whether you won or lose the bet. If you lose, the bet would be deducted from your account. If you won, the bet would be added to your account. If it’s a tie, your account is not touched. Then, continue the game of putting your bet until your bet is zero. The game is to continue even when you have zero or negative amount of money. You must test your game program 3 times with at least 10 rounds for each game. The output of your test case #1 may like as follows: Welcome to the Rolling Dice Game of TM

1 =============================================. Now, you have 100 dollars to play the game.

2 =============================================. Enter your bet to roll the dice (enter 0 to quit): 10 Dealer got 1 , and you got 5 . You won 10 dollars. Now, you have 110 dollars.

3 =============================================. Enter your bet to roll the dice (enter 0 to quit): 5 Dealer got 5 , and you got 3 . You lost 5 dollars. Now, you have 105 dollars.

4 =============================================. Enter your bet to roll the dice (enter 0 to quit): 30 Dealer got 3 , and you got 3 . It's a tie. Now, you have 105 dollars.

5 =============================================. Enter your bet to roll the dice (enter 0 to quit): 200 Dealer got 3 , and you got 4 . You won 200 dollars. Now, you have 305 dollars.

6 =============================================. Enter your bet to roll the dice (enter 0 to quit): 100 Dealer got 4 , and you got 1 . You lost 100 dollars. Now, you have 205 dollars.

7 =============================================. Enter your bet to roll the dice (enter 0 to quit): 205 Dealer got 2 , and you got 6 . You won 205 dollars. Now, you have 410 dollars.

8 =============================================. Enter your bet to roll the dice (enter 0 to quit): 400 Dealer got 3 , and you got 6 . You won 400 dollars. Now, you have 810 dollars.

9 =============================================. Enter your bet to roll the dice (enter 0 to quit): 500 Dealer got 4 , and you got 1 . You lost 500 dollars. Now, you have 310 dollars.

10 =============================================. Enter your bet to roll the dice (enter 0 to quit): 310 Dealer got 6 , and you got 2 . You lost 310 dollars. Now, you have 0 dollars.

11 =============================================. Enter your bet to roll the dice (enter 0 to quit): 10 Dealer got 3 , and you got 6 . You won 10 dollars. Now, you have 10 dollars.

12 =============================================. Enter your bet to roll the dice (enter 0 to quit): 40 Dealer got 3 , and you got 1 . You lost 40 dollars. Now, you have -30 dollars.

13 =============================================. Enter your bet to roll the dice (enter 0 to quit): 0

14 =============================================. Thank you for playing the Rolling Dice Game of TM

15 =============================================.

Exercise goals: Be able to solve the profit maximization problem of a monopolist with third-degree price discrimination.
Understand the differences between 3DPD and single-pricing. You own a monopoly that produces cars to be sold in two countries: Freedonia and Sylvania. Demand for cars in Freedonia is given by PF = 16,000-20Q_F, while demand in Sylvania is given by P_S = 20, 000 - 10QS. You own a single plant in Sylvania that produces cars for both countries. Your cost function is C (Q) = 8, 000Q, where Q = Q_F + Q_S.

1. (1 point) Initially, these two countries have a peaceful relationship, and free trade exists between them, therefore you can only charge a single price between the two countries. What price do you set? How much profit do you collect? [Hint: it may be easier to solve this maximization problem in terms of P. To do so, you can first obtain the demand functions (i.e. Q(P) = . . .), and then write the cost function in terms of P using the demand functions]

2. (1 point) How much consumer surplus is generated in each country?

3. (1 points) The Freedonian government finds out that Sylvania is secretly plotting to invade Freedonia. This discovery leads to an interruption in free trade between the two countries. That’s good news for you: it means you can now sell cars in Freedonia at a different price than in Sylvania. However, in order to do so, you have to build a factory in Freedonia as well. Suppose that you can build a factory for free (the Freedonian government is giving you a generous handout because they like your cars). The plants are identical, so you have the same cost function in both countries (C (Q) = 8, 000Q). What prices do you set? How much profit do you collect?

4. (1 point) How much consumer surplus is generated for each country in this new scenario? Comment on whether you think 3DPD is good or bad for society as a whole (i.e. Freedonia + Sylvania) in this case.

5. (1 point) Suppose that the cost of building a factory is 300,000. Does it make sense for the Freedonian government to subsidize the plant? Why or why not? [When answering this question, assume that the Freedonian government only cares about the well-being of its citizens]

For the diprotic weak acid H2A, Ka1 = 2.8

You are camping in a tent, you have some very hot water (700C) in a water bladder, but you realize that in fact you do not have enough drinking water. Your plan is to melt the block of ice you have seen in front of your tent using the boiling water you have and then treat the entire quantity. You estimate that the ice block has about 1 kg and is at a temperature of about -200C. How much water do you need to melt the ice and rise its temperature to 50C?

As a recently hired MBA intern, you are working in a consulting capacity to provide an analysis for Al Dente's Italian Restaurant. A financial income Statement is presented below: Sales $2,698,000 Cost of sales (all variable) $1,557,563 Gross Margin $1,140,438 Operating expenses: Variable $277,975 Fixed $213,675 Total operating expenses: $491,650 Administative expenses (all fixed) $564,375 Net operating income $84,413 This income statement presents the sales, expenses and pre-tax operating income for a local eating facility. At Al Dente, the average meal cost for lunches and dinners are $20 and $40 respectively. Al Dente serves both lunch and dinner 300 days per year and serves twice as many lunches as dinners. As the MBA intern you are to prepare a managerial accounting focused report to the owners of Al Dente's Italian Restaurant, to include the following:

2. Compute the break-even volume of the number of lunches and dinners. Assume that the CM% for each meal category is the same as the average CM% as calculated in #1. Hint: To solve a break even sales mix, use the horizontal formula:

Net operating income = ($Sales – $Variable costs) – $fixed costs

Net operating income = $CM – $fixed costs

At Breakeven, NOI = $0

Therefore, $CM = $ Fixed costs

Now solve for the unit $CM for each item. Let X be the number of dinners, 2X the number of lunches. $CM is the combined total of the $CM for dinners, and the $CM for lunches.

How a California company’s domestic policies might have to be adapted or changed to be successful in a new domestic (think USA southern state) or international market?

How a California company’s strategies might have to be adapted or changed to be successful in a new domestic (think USA southern state) or international market?

Network Analysis and Theory

a) In your opinion what are the biggest threats to a network in terms of security and why?

b) Describe what you would do to protect a network from attack, mention any appliances or products you can recommend.