1 The External Diameter Of An Inward Flow Reaction Turbine Is 0 5m The Width Of The 2766029

1)The external diameter of an inward flow reaction turbine is 0.5m. The width of the wheel at inlet is 150mm and the velocity of flow at inlet is 1.5 m/s .Find the rate of flow passing through the turbine. Document Preview:

The external diameter of an inward flow reaction turbine is 0.5m. The width of the wheel at inlet is 150mm and the velocity of flow at inlet is 1.5 m/s .Find the rate of flow passing through the turbine. Solution:- D1 = 0.5m B1 = 0.15m Vf1 = 1.5m/s Q = ? Discharge through the tubine, Q = p D1 B1 Vf1= p *0.5* 0.15*1.5=0.353 Q=0.353 m3/s (Ans)

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1 The Debeers Company Is A Profit Maximizing Monopolist That Exercises Monopoly Powe 3081283

1). The DeBeers company is a profit-maximizing monopolist that exercises monopoly power in the distribution of diamonds. If the company earns positive economic profits this year, the price of diamonds will:        

Exceed the marginal cost of diamonds but equal to the average total cost of diamonds. 

Exceed both the marginal cost and the average total cost of diamonds.      

Be equal to the marginal cost of diamonds.       

Be equal to the average total cost of diamonds.

2). Using 100 workers and 10 machines, a firm can produce 10,000 units of output; using 250 workers and 25 machines, the firm produces 21,000 units of output. These facts are best explained by:       

Economies of scope

Diseconomies of scale

Diminishing marginal productivity

Economies of scale

3). Suppose that college tuition is higher this year than last and that more students are enrolled in college this year than last year.  Based on this information, we can best conclude that:     

despite the increase in price, quantity demanded rose due to some other factors changing.

the demand for a college education is positively sloped.

the law of demand is invalid.

this situation has nothing to do with the law of demand.

4). A monopoly firm is different from a perfectly competitive firm in that:          

A monopolist’s demand curve is perfectly inelastic whereas a perfectly competitive firm’s demand curve is perfectly elastic.

A competitive firm has a u-shaped average cost curve whereas a monopolist does not.

A monopolist can influence market price whereas a perfectly competitive firm cannot.

There are many substitutes for a monopolist’s product whereas there are no substitutes for a competitive firm’s product.

5). The best example of positive externality is:         

Alcoholic beverages

Pollution

Education

Roller coaster rides

6). The theory that quantity supplied and price are positively related, other things constant, is referred to as the law of:  

supply

profit maximization

opportunity cost

demand

7). A reduction in the supply of labor will cause wages to:

Decrease and employment to decrease.

Increase and employment to increase.

Decrease and employment to increase.

Increase and employment to decrease.

8). Other things held constant in a competitive labor market, if workers negotiate a contract in which the employer agrees to pay an hourly of $17.85 while the market equilibrium hour rate is $16.50, the:

Quantity of workers demanded will exceed the quantity of workers supplied.

Quantity of workers supplied will exceed the quantity of workers demanded.

Supply of labor will decrease until the equilibrium wage rate is $17.85.

Demand for labor will increase until the equilibrium wage rate is $17.85.

9). Alex is playing his music at full volume in his dorm room. The other people living on his floor found this to be a nuisance, but Alex doesn’t care. Alex’s music playing is an example of:

Pareto externality

Positive externality

Negative externality

Normative externality

10). Oligopoly is probably the best market for technological change because:          

The typical oligopoly has the funds to carry out research and development and believe that its competitors are innovating, which motivates it to conduct research and development.

The typical oligopoly lacks the funds to carry out research and development and therefore will use basic research from universities.

Research and development occurs only if government subsidizes such activity, and government tends to subsidize oligopolies.

The typical oligopoly keeps price very close to average total cost because it fears the entry of new rivals if its profits are excessively high.

11). A perfectly competitive firm facing a price of $50 decides to produce 500 widgets. Its marginal cost of producing the last widget is $50. If the firm’s goal is to maximize profit, it should:    

Produce more widgets

Produce fewer widgets

Continue producing 500 widgets

Shut down

12). Graphically, a change in price causes:

the demand curve to shift.

both supply and demand to shift.

a movement along a given supply curve, not a shift.

the supply curve to shift.

13). In 1997, the federal government reinstated a 10 percent excise tax on airline tickets. The industry tried to pass on the full 10 percent ticket tax to consumers but was able to boost fares by only 4 percent. From this you can conclude that the:

Supply of airline tickets is perfectly inelastic.

Supply elasticity of airline tickets is less than infinity.

Demand elasticity for airline tickets is greater than zero in absolute value.

Demand for airline tickets is perfectly inelastic.

14). In 2011, the Department of Justice sued AT&T to block its merger with the cell phone service provider T-Mobile. To defend itself against the charge, AT&T argued that the:

Combined company could raise prices, allowing it to survive in a rapidly changing market.

Government had no authority to block mergers in the telephone industry.

Government had guaranteed it exclusive control of cell phone service.

Merger would improve and expand cellular service to consumers.

15). The law of diminishing marginal productivity implies that the marginal product of a variable input:

Never declines

Always declines

Is constant

Eventually declines

16). Suppose OPEC announces it will increase production. Using supply and demand analysis to predict the effect of increased production on equilibrium price and quantity, the first step is to show the:

supply curve shifting to the right.

demand curve shifting to the left.

demand curve shifting to the right.

supply curve shifting to the left.

17). Many call centers that provide telephone customer services for U.S. companies have been established in India, but few or none have been established in China. Why?

China is at a more advanced stage of economic development than India.

China lacks the political infrastructure to support call centers.

Indian labor costs are equal to Chinese labor costs.

Chinese labor lacks the specific language skills needed to make call centers profitable in China.

18). Suppose people freely choose to spend 40 percent of their income on health care, but then the government decides to tax 40 percent of that person’s income to provide the same level of coverage as before. What can be said about deadweight loss in each case?

There is no difference because the total spending remains the same and the health care purchased remains the same.

Taxing income results in less deadweight loss because government knows better what health care coverage is good for society.

Taxing income results in deadweight loss, and purchasing health care on one’s own doesn’t result in deadweight loss.

There is no difference between goods that are purchased in the market in either case.

19). At one time, sea lions were depleting the stock of steelhead trout. One idea to scare sea lions away from the Washington coast was to launch fake killer whales, which are predators of sea lions. The cost of making the first whale is $16,000 ($5,000 for materials and $11,000 for the mold). The mold can be reused to make additional whales, and so additional whales cost $5,000 each. Based on these numbers, the production of fake killer whales exhibits:

Diminishing marginal product

Decreasing returns to scale

Constant returns to scale

Increasing returns to scale

20). There are many restaurants in the city of Raleigh, each one offering food and services that differ from those of its competitors.  There is also free entry of sellers into the market, and each seller serves a very small fraction of the total number of meals served each day.  The restaurant industry in Raleigh is best characterized as:

Perfectly competitive.

Monopolistically competitive.

A pure monopoly.

An oligopoly.

21). Suppose foreign shrimp prices drop by 32 percent and importers gain a 90 percent market share.  From this information, what would economists strongly suspect about this industry?

Foreigners have a comparative advantage in shrimping.

The large sales of foreigners indicate they are better strategic business bargainers than Americans are.

Americans have a comparative advantage in shrimping.

Foreign sellers probably are colluding on price to maximize profits.

22). For a monopolist, the price of a product:

Is less than the marginal revenue.

Exceeds the marginal revenue.

Equals the marginal cost.

Equals the marginal revenue.

23). When Ross Perot ran for president as a third party candidate in 1992, he argued that free trade with Mexico would result in massive job losses in the United States because Mexican wages were so low. Which of the following is the best explanation of why few economists agreed with Perot?

Although economics predicted that unemployment would rise, the increased profits of corporations would raise stock prices enough to compensate for the lost jobs.

Economists did not believe any jobs would be lost in the United States.

Although economists believed that in some areas the United States would lose jobs, they expected the United States would gain jobs in other areas.

Economics believed that the U.S. unemployment would rise.

24). Mr. Woodward’s cabinet shop is experiencing rapid growth in sales. As sales have increased, Mr. Woodward has found it necessary to hire more workers. However, he has observed that doubling the number of workers has less than doubled his output. What is the likely explanation?

The law of demand

The law of diminishing marginal productivity

The law of supply

The law of diminishing marginal utility

25). Price elasticity of demand is the:

Change in the quantity of a good demanded divided by the change in the price of that good.

Percentage change in price of that good divided by the percentage change in the quantity of that good demanded.

Percentage change in quantity of a good demanded divided by the percentage change in the price of that good.

Change in the price of a good divided by the change in the quantity of that good demanded.

26). Which of the following statements is true about a downward-sloping demand curve that is a straight line?

The slope remains the same, but elasticity falls as you move down the demand curve.

The slope remains the same, but elasticity rises as you move down the demand curve.

The slope and the elasticity fall as you move down the demand curve.

The slope and elasticity are the same at all points.

27). Strategic decision making is most important in: 

Monopolistically competitive markets.

Monopolistic markets.

Oligopolistic markets.

Competitive markets.

28). Cartels are organizations that:

Encourage price wars.

Keep markets contestable.

Use predatory pricing to monopolize industries.

Coordinate the output and pricing decisions of a group of firms.

29). Microeconomics and macroeconomics are:

Interrelated because what happens in the economy as a whole is based on individual decisions.

Interrelated because both are often taught by the same instructors.

Not related because they are taught separately.

Virtually identical, though one is much more difficult than the other.

30). Microeconomics is the study of:

a firm's pricing policies

inflation

unemployment

business cycles

 

 
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1 The Demand Marginal Benefit Curve For Pizza Slices Per Month For A Small City Is A 2861629

1. The demand (marginal benefit) curve for pizza slices per month for a small city is as show in the graph below page. Its inversecan be described algebraically as: P= 4 – Q/2) (where P=price and Q=quantity in thousands of slices).
[Side Note: we call this the inverse demand curve,because the true demand curve says that quantity is a function of price, and that is because consumers are price takers. In other words, we consumers observe prices and then decide how much of a good to consume. In this case the true demand curve is Q = 8 – 2P. (Notice how we consume less at higher prices.) However, to make this an algebraic function where the amount on the Y axis (Price) is a function of the amount on the X axis (Quantity), we invertthe demand curve. Algebraically, we do that by adding 2P to both sides, subtracting Q from both sides, and then dividing through by 2. (Check that out for yourself.) We also call this a “marginal benefit” or MB curve as it describes the marginal or additional or incremental benefit a consumer obtains from consumption of one more unit (Q) consumed.]

a. Add the following supply curve to the graph: P= 1 + Q/4. [Note that this equation describes and inversesupply relationship. The regular supply curve would be Q = 4P – 4. But you will deal with the inverse curves here. This is also called the “marginal cost” or MC curve because it describes the incremental cost of producing one more unit.]
[Hint: remember this trick from algebra to get you going on drawing the MC curve: ask yourself what “P” would be when “Q” is zero. That’s your “y intercept”, or in this case, your “P” intercept, since our Y axis is where we put price. Then ask where the line goes from there, which you can figure out by plugging in Q=1, or Q=2, etc. It’s a straight line, so you only need to do the calculation for two “Qs”. “Q=0” is the easiest, of course.]
Please label the curves (or as in the case here, straight lines) with “MB” (your inverse demand curve) and “MC” (your inverse supply curve).

b. What are the “market-clearing” or “equilibrium” quantity and price for pizza slices? We’re going to call these Qmand Pmwith the “m” being for “market”. [Big hint: Markets clear when consumers and producers agree on a price, and that leads to an agreement on the quantity that will be produced and purchased. Also note the scale of the X (or Q) axis – it is THOUSANDS of slices. This will affect your later $ values as well, but you should be sure to do that conversion in your answer about Qm.]
Qm=___
Pm=___
Please use the graph to help determine these quantities. Mark the point on the X and Y axis, respectively, with Qmand Pm­­.

Now please show how to determine these same quantities (Qmand Pm­­) using algebra.
Please put your algebra here and remember that your conclusions will be equations that say “Qm= [something]” and “Pm=[something]”.

c. What is the net [social] benefit at this optimal level of pizza slices? Your answer will be expressed as a number of dollars. Please shade an area in your graph that corresponds to this NET benefit.
To get the number of dollars, you may interpolate the relevant figures for your graph and then calculate the amount, or you can use algebra to get those figures.
[Hint: Net benefit for each slice of pizza is the excess of what consumers are willing to pay for the slice (otherwise known as their marginal benefit) over the cost of producing it (otherwise known as the marginal cost, or the supply curve). You are looking for the area of a triangle that has two parts: Consumer Surplus, and Producer Surplus.]
[Calculations here, if you go the algebra route.]

d. What if government requires pizza makers to charge $3/slice? How many slices will be sold, and what will be the net social benefit?

e. How does this change affect consumers, and how does it affect producers?
[Hint: We will use “consumer surplus” (CS) and “producer surplus” (PS) to make such comparisons. CS the areas between the demand curve and the price line. PS is the area between the price line and the supply curve. (Together they make up the net benefit you calculated in part d (for the optimal case) and part e (for the case with the price restriction). So you can answer the question by calculating* the change in CS and the change in PS due to the price restriction. *You can also look at areas on the graph that represent pre- and post-change CS and PS and eyeball whether each (or either) is bigger (or smaller) after the change. I am more interested in your qualitative answer than I am in the dollar figures involved.]

f. Another important quantity is the “Deadweight loss” associated with this policy.
Deadweight loss (DWL) is the cost to society of being stuck at a price-and-quantity combination that is different than the socially optimal combination.
DWL is typically a TRIANGLE, and if you think about the triangle as an arrowhead, the tip of the arrowhead will always point to the social optimum.
So, please shade and label the DWL triangle on your graph.
How many dollars does the DWL area represent? [Remember, the area of a triangle is “one half the base times the height”. Turn your head (or your paper) 90 degrees to turn the key vertical line into the “base” of that triangle (i.e. the base will be a difference you can measure on the Price/Y axis. The height will be a quantity you can measure along the Quanity/X axis.]

g. Assuming that the pizza pricing policy is not entirely arbitrary, what possible justification for it might you suggest? That is, why would the government agency even want to have such a policy?

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1 The Correspondence Principle Provides An Understanding Of How The Services Or Publ 3309457

1 ) The correspondence principle provides an understanding of how the services ( or public goods ) of government may be organized and delivered . Please describe this principle , and using examples , explain how it can be used in understanding which level of government provides a specific public good

 
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1 The Culture Of A Company Is Conveyed Through A Rites B Myths C Rituals D All Of Th 2846858

1-The culture of a company is conveyed through a.Rites b.Myths c. Rituals d. All of the above 2-A specialty product is ________ intensively distributed than a shopping product a.More b.Less c. Both of the above 3-The demand for a product is ________ when price cut causes revenue to increase. a. Income elastic b. Price elastic c. cross elastic d. None of the above 4-Contact awarded to lowest bidder is known as a. Negotiated contract b. Open bid c. Closed bid d. Open contract 5-Carrying the line of only one manufacturer is known as Exclusive assortment Open bid Negotiated contract Deep assortment

 
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1 The Chapter Stresses The Idea That The Firm Straddles Input And Output Ma 1770612

1. The Chapter stresses the idea that the firm straddles input and output markets. Explain this notion. What role does the firm’s cost function play as it straddles input and output markets?

2. Expressions (2.1) and (2.7) provide equivalent descriptions of the profit maximizing firm’s behavior. Why is a cost function present in expression (2.7) but not in expression (2.1)? What purpose is served by the firm’s cost function?

3. We insisted in notation ally describing the firm’s cost curve with C(q; P) as opposed to simply C(q). Explain.

 
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1 The Bolt Making Industry Has 20 Identical Firms Each One Has A Short Run Total Cos 3445875

1. The bolt-making industry has 20 identical firms, each one has a short-run total cost function TC(q) 16 + q2 (a) What is the short-run supply of each firm? (b) The market demand is QD(p) = 110-p. What is the short-run equilibrium price and quantity supplied by each firm? Calculate each firm’s profit. (c) Suppose that the number of firms increases to 25. What is the short-run equilibrium price and quantity supplied by each firm? Calculate each firm’s profit

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1 The Largest Source Of Household Income In The U S Is Obtained From A Stock Dividen 3081304

1) The largest source of household income in the U.S. is obtained from

A. stock dividends

B. wages and salaries

C. interest earnings

D. rental income

2) The market where business sell goods and services to households and the government is called the

A. goods market

B. factor market

C. capital market

D. money market

3) Real gross domestic product is best defined as

A. the market value of intermediate goods and services produced in an economy, including exports

B. all goods and services produced in an economy, stated in the prices of a given year and multiplied by quantity

C. the market value of all final goods and services produced in an economy, stated in the prices of a given year

D. the market value of goods and services produced in an economy, stated in current-year prices

4) Underemployment includes people

A. who work “-off-the-books”- to avoid tax liabilities

B. who are working part time, or not using all their skills at a full-time job

C. who are tired of looking for a job, so they quit looking, but still want one

D. whose skills are not in demand anymore

5) The Bureau of Economic Analysis is responsible for which of the following?

A. Setting interest rates

B. Managing the money supply

C. Calculating U.S. gross domestic product]

D. Paying unemployment benefits

6) The Federal Reserve provides which of the following data?

A. Federal funds rate

B. Stock price of GE

C. Bond yields of corporations

D. Debt to GDP of Ireland

7) Consider if the government instituted a 10 percent income tax surcharge. In terms of the AS/AD model, this change should have

A. shifted the AD curve to the left

B. shifted the AD curve to the right

C. made the AD curve flatter

D. made the AD curve steeper

8) If the depreciation of a country’-s currency increases its aggregate expenditures by 20, the AD curve will

A. shift right by more than 20

B. shift right by less than 20

C. shift right by exactly 20

D. not shift at all

9) Aggregate demand management policies are designed most directly to

A. minimize unemployment

B. minimize inflation

C. control the aggregate level of spending in the economy

D. prevent budget deficits or surpluses

10) Suppose that consumer spending is expected to decrease in the near future. If output is at potential output, which of the following policies is most appropriate according to the AS/AD model?

A. An increase in government spending

B. An increase in taxes

C. A reduction in government spending

D. No change in taxes or government spending

11) According to Keynes, market economies

A. never experience significant declines in aggregate demand

B. quickly recover after they experience a significant decline in aggregate demand

C. may recover slowly after they experience a significant decline in aggregate demand

D. are constantly experiencing significant declines in aggregate demand

12) The laissez-faire policy prescription to eliminate unemployment was to

A. eliminate labor unions and government policies that hold real wages too high

B. strengthen unions and government regulations protecting unions and workers

C. increase real wages so that people are encouraged to work

D. have government guarantee jobs for everyone

13) In the AS/AD model, an expansionary monetary policy has the greatest effect on the price level when it

A. increases both nominal and real income

B. increases real income but not nominal income

C. increases nominal income but not real income

D. doesn’-t increase real or nominal income

14) The Federal funds rate

A. is always slightly higher than the discount rate

B. can never be close to zero

C. may sometimes have to be targeted at zero

D. is an intermediate target

15) What tool of monetary policy will the Federal Reserve use to increase the federal funds rate from 1% to 1.25%?

A. Open-market operations

B. The discount rate

C. A change in reserve requirements

D. Margin requirements

16) If the Federal Reserve increases the required reserves, financial institutions will likely lend out

A. more than before, increasing the money supply

B. less than before, decreasing the money supply

C. more than before, decreasing the money supply

D. less than before, increasing the money supply

17) Suppose the money multiplier in the U.S. is 3. Suppose further that if the Federal Reserve changes the discount rate by 1 percentage point, banks change their reserves by 300. To increase the money supply by 2700 the Federal Reserve should

A. reduce the discount rate by 3 percentage points

B. reduce the discount rate by 10 percentage points

C. raise the discount rate by 3 percentage points

D. raise the discount rate by 10 percentage points

18) If the Federal Reserve reduced its reserve requirement from 6.5 percent to 5 percent. This policy would most likely

A. increase both the money multiplier and the money supply

B. increase the money multiplier but decrease the money supply

C. decrease the money multiplier but increase the money supply

D. decrease both the money multiplier and the money supply

19) A country can have a trade deficit as long as it can

A. purchase foreign assets

B. make loans to other countries

C. borrow from or sell assets to foreigners

D. produce more than it consumes.

20) A weaker dollar

A. raises inflation and contracts the economy.

B. reduces inflation and contracts the economy

C. raises inflation and expands the economy

D. reduces inflation and expands the economy

21) In the short run, a trade deficit allows more consumption, but in the long run, a trade deficit is a problem because

A. the country eventually will consume more and produce less

B. the country eventually will sell all its financial assets to foreigners

C. the domestic currency will appreciate

D. the country eventually has to produce more than it consumes in order to pay foreigners their profits

22) Considering an economy with a current trade deficit and considering only the direct effect on income, an expansionary monetary policy tends to

A. decrease the exchange rate and increase the trade deficit

B. increase the exchange rate and increase the trade deficit

C. decrease the exchange rate and decrease the trade deficit

D. increase the exchange rate and decrease the trade deficit

23) The balance of trade measures the

A. difference between the value of imports and exports

B. share of U.S. imports coming from various regions of the world

C. share of U.S. exports going to various regions of the world

D. exchange rate needed to make imports equal exports

24) When a country runs a trade deficit, it does so by:

A. borrowing from foreign countries or selling assets to them.

B. borrowing from foreign countries or buying assets from them.

C. lending to foreign countries or selling assets to them.

D. lending to foreign countries or buying assets from them.

25) Expansionary fiscal policy tends to

A. raise U.S. income, increase U.S. imports, and increase the trade deficit

B. raise U.S. income, increase U.S. imports, and lower the trade deficit

C. lower U.S. income, reduce U.S. imports, and increase the trade deficit

D. lower U.S. income, reduce U.S. imports, and lower the trade deficit

26) In considering the net effect of expansionary fiscal policy on the trade deficit, the

A. income effect offsets the price effect

B. price effect offsets the income effect

C. income and price effects work in the same direction, so the trade deficit is decreased

D. income and price effects work in the same direction, so the trade deficit is increased

27) If U.S. interest rates fall relative to Japanese interest rates and Japanese inflation falls relative to U.S. inflation, then the

A. dollar will lose value in terms of yen

B. dollar will gain value in terms of yen

C. dollar’-s value will not change in terms of yen

D. change in the dollar’-s value cannot be determined

28) Expansionary monetary policy tends to

A. lower the U.S. interest rate and increase the U.S. exchange rate

B. lower the U.S. interest rate and decrease the U.S. exchange rate

C. increase the U.S. interest rate and decrease the U.S. exchange rate

D. increase the U.S. interest rate and increase the U.S. exchange rate

29) The U.S. has limits on Chinese textile imports. Such limits are an example of

A. a tariff

B. a quota

C. a regulatory trade restriction

D. an embargo

30) Duties imposed by the U.S. government on imported Chinese frozen and canned shrimp are an example of

A. tariffs

B. quotas

C. voluntary restrictions

D. regulatory trade restrictions

 

 
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1 The Base Of Machine Is Supported By Four 4 Two 2 Leg Supports Like A Shipping Cont 3951371

1. The base of machine is supported by four (4) two (2) leg supports (like a shipping container crane) consisting of 2.4m long steel struts pinned at each end. The machine must remain level and aligned at all times. Due to a maintenance issue, one of the 20mm square struts is replaced with a 20mmx50mm titanium one.

1a. What is the result of this on pin “C”

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2. A 500ft length of 3/4”-6×37 class bright wire rope EIPS IWRC (steel cable) is to be used to suspend some lights across a football field. It is attached to adjustable eye bolts at each support. Each eye bolt has 12 inches of adjustment available. The bolts are exactly 500 ft apart to start.

2a. How far do you need to loosen the eye bolts to initially hang just the cable? (Note: it may help to treat the distributed load as a point load at the middle with the cable acting as two thin rods initially 250 ft long)

2b. What is the final position of the bolts in order to have the cable “sag” less than or equal to 6 inches after the light) is attached?

Note Hibbeler Mechanics of Materials 10th Edition R3-4 and R3-5 may help you. Attached.

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3. A steel process component is mad by welding three (3) pipes to two (2) pre drilled steel end plates. Due to a serious lack of caffeine, the center pipe is cut 0.35mm short. The worker decides to fix the problem by forcing the ends together in a large vice and then welding the center pipe (B).

3a. What is the stress in each pipe after it is removed from the vice? (Neglect any welding stress)

Note that triangle thing (all connections) on C is a welding symbol for a 6mm fillet.

3b. Discuss/explain what this did to the capacity of the finished part.

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© 2017 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. *R3–4.1The wires each have a diameter of in., length of 2D2 ft, and are made from 304 stainless steel. If P = 6 kip, Cdetermine the angle of tilt of the rigid beam AB.2 ftP2 ft 1 ftBASolutionEquations of Equilibrium: Referring to the free-body diagram of beam AB shown in Fig. a,+S M = 0; F (3) – 6(2) = 0 F = 4 kipA BC BC+ cSM = 0; 6(1) – F (3) = 0 F = 2 kipB AD ADNormal Stress and Strain:3F 4(10 )BCs = = = 20.37 ksiBC2Ap 1BCa b4 23F 2(10 )ADs = = = 10.19 ksiAD2AAD p 1a b4 2Since s 6 s and s 6 s , Hooke’s Law can be applied.BC Y A Y3 -3s = EP ; 20.37 = 28.0(10 )P P = 0.7276(10 ) in.>in.BC BC BC BC3 -3s = EP ; 10.19 = 28.0(10 )P P = 0.3638(10 ) in.>in.AD AD AD ADThus, the elongation of cables BC and AD are given by-3d = P L = 0.7276(10 )(24) = 0.017462 in.BC BC BC-3d = P L = 0.3638(10 )(24) = 0.008731 in.AD AD ADReferring to the geometry shown in Fig. b and using small angle analysis,d – d0.017462 – 0.008731 180°BC AD-3u = = = 0.2425(10 ) rad a b = 0.0139° Ans.36 36 p radAns:u = 0.0139°177This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted.© 2017 Pearson Education, Inc., Hoboken, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. R3–5.1The wires each have a diameter of in., length of 2D2 ft,…

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1 The Midnight Hour A Local Nightclub Earned 100 000 In Accounting Profit Last Year 1040006

1)The Midnight hour, a localnightclub, earned $100,000 inaccounting profit last year. Thisyear the owner, who had invested $ 1million in the club, decided toclose the club. What can you sayabout economic profit (and the rateof return)in the nightclub business?ANSWER:Economic Profit = TR(total revenue)-TC(total economic cost)EP = $100,000 – $1,000,000EP = -$900,000Since EP is a negative number thefirm should shut down, the output isnot positive, therefore the companyoperates at a loss, the managerneeds to determine how long theywant to continue with this lossprocess.Does this sound like the correctanswer?Thanks,EY

 
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