Design an I-section purlin for an industrial building to support the galvanized
corrugated iron sheet roof with following details:
Spacing of the truss = 5.0 meter
Spacing of purlins = 1.5 meters
Inclination of main rafter to horizontal = 30o
Weight of galvanized sheets with bolts etc = 130 N/m2
Imposed snow load = 1.5 kN/m2
Wind load = 1.0 kN/m2

Consider the following reaction:

A(g)⇌2B(g)

Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate simplifying assumptions.

Kp = 2.0?

Kp = 1.4 x 10^4?

Kp = 1.2 x 10^5?

Captain Science, unmasker of fuzzy thinkers and proponent of cosmic truth, drops a 35 kg bowling ball on a stiff spring from a height of 1.0 m and finds that the spring compresses 2 cm.  If he drops the bowling ball from a height of 4.0 m, how much will the spring compress?

8 cm

1 cm

16 cm

2 cm

4 cm

A cyclone cluster is required to classify a slurry feed of 29wt% solids (SG_p = 2.9) at a solids flowrate of 410 tonnes per hour.

a. Determine the diameter of the cyclones required to operate at a d₅₀ of 70 micrometres. The cyclones are to be operated at a pressure drop of 150 kPa. The SG of the liquid phase water = 1.0.

b. Determine the number of cyclones that are required if the capacity of the cyclone found in question (a) is 75 litres/second.

A) A body falls on the ground from a height of 10 m and rebounds to a height of 2.5 m. Calculate the percentage loss of kinetic energy of the body during its collision with the ground.

B) A bomb explodes into two fragments of masses 3.0 kg and 1.0 kg. The total kinetic energy of the fragment is 6x10^4 joule. calculate the kinetic energy of the bigger fragment, and the momentum of the smaller fragment.

You are buying a house and the mortgage company offers to let you pay a​ "point" ​(1.0 % of the total amount of the​ loan) to reduce your APR from 6.50 % to 6.25 % on your $ 400000​, 30​-year mortgage with monthly payments. If you plan to be in the house for at least five​ years, should you do​ it? ​(Note: Be careful not to round any intermediate steps less than six decimal​ places.)

A firm had the following values for the four debt ratios

• Liabilities to Assets Ratio: less than 1.0
• Liabilities to Shareholders' Equity Ratio: greater than 1.0
• Long-Term Debt to Long-Term Capital Ratio: less than 1.0
• Long-Term Debt to Shareholders' Equity Ratio: equal to 1.0

1.Suppose the firm issued short-term debt for cash. Liabilities to Assets

• A. increased
• B. stayed the same
• C. decreased

2.Suppose the firm issued short-term debt for cash. Long-Term Debt to Long-Term Capital

A. increased

• B. stayed the same
• C. decreased

3.Suppose the firm issued long-term debt and used the cash proceeds to redeem short-term debt. Treat as a unified transaction. Liabilities to Shareholders' Equity

A. increased

• B. stayed the same
• C. decreased

4.Suppose the firm issued long-term debt and used the cash proceeds to redeem the short-term debt. Treat as a unified transaction. Long-Term Debt to Shareholders' Equity

A. increased

• B. stayed the same
• C. decreased

5.Suppose the firm redeemed (paid off) long-term debt with cash. Liabilities to Assets

A. increased

• B. stayed the same
• C. decreased

6.Suppose the firm redeemed (paid off) long-term debt with cash. Long-Term Debt to Long-Term Capital

A. increased

• B. stayed the same
• C. decreased

7.Suppose the firm issued short-term debt and used the cash proceeds to repurchase shares of its common stock (treat as a unified transaction). Liabilities to Shareholders' Equity

A. increased

• B. stayed the same
• C. decreased

8.Suppose the firm issued short-term debt and used the cash proceeds to repurchase shares of its common stock (treat as a unified transaction). Long-Term Debt to Shareholders' Equity

• A. increased
• B. stayed the same
• C. decreased

9.Suppose the firm issued $50 million of long-term debt and $50 million of common stock and used the proceeds to buy the building and equipment needed to produce a promising new product. Liabilities to Assets

• A. increased
• B. stayed the same
• C. decreased

10.Suppose the firm issued $50 million of long-term debt and $50 million of common stock and used the proceeds to buy the building and equipment needed to produce a promising new product. Long-Term Debt to Shareholders' Equity

A. increased

• B. stayed the same
• C. decreased

Compute and Interpret Liquidity, Solvency and Coverage Ratios
Selected balance sheet and income statement information for Nordstrom, Inc. for 2014 and 2013 follows.

(a) Compute the following liquidity, solvency and coverage ratios for both years. (Round your answers to two decimal places.)
2014 current ratio = Answer
2013 current ratio = Answer

2014 quick ratio = Answer
2013 quick ratio = Answer

2014 liabilities-to-equity = Answer
2013 liabilities-to-equity = Answer

2014 total debt-to-equity = Answer
2013 total debt-to-equity = Answer

2014 times interest earned = Answer
2013 times interest earned = Answer

2014 cash from operations to total debt = Answer
2013 cash from operations to total debt = Answer

2014 free operating cash flow to total debt = Answer
2013 free operating cash flow to total debt = Answer

(b) Which of the following best describes the company's credit risk?

Both the quick and current ratios for 2014 increased in the past year and are higher than 1.0, implying Nordstrom is relatively liquid. However, interest coverage ratios are high, indicating it may have difficulty making interest payments on its debt.

Both the quick and current ratios for 2014 decreased in the past year but are higher than 1.0, implying Nordstrom is relatively liquid. Interest coverage ratios are strong, indicating it has the ability to cover interest payments on its debt.

Both the quick and current ratios for 2014 decreased in the past year and are higher than 1.0, implying Nordstrom is would have difficulty converting assets to cash, if needed. However, interest coverage ratios are strong, indicating it has the ability to cover interest payments on its debt.

Both the quick and current ratios for 2014 decreased in the past year but are higher than 1.0, implying Nordstrom is relatively liquid. Interest coverage ratios are weak, indicating it may have difficulty making interest payments on its debt.

Question 35

A professor in the Accountancy Department of a business school indicated that there is much more variability in the final exam scores of students taking the introductory accounting course as a requirement than for students taking the course as part of their major. Random samples of 16 non-accounting majors and 10 accounting majors taken from the professor's class roster in his large lecture and the following results are computed based on the final exam scores:

Using  =5%, the test and critical F-values, for the hypothesis test to support the professor's statement, respectively are:

Select one:

a. 5.7589 and 3.77 respectively

b. 0.1736 and 3.77 respectively

c. 5.7589 and 3.01 respectively

d. 2.3998 and 3.01 respectively

Question 42

An electrical engineer is interested in the effect on the tube conductivity of five different types of coating for cathode ray tubes used in telecommunications system display device. The following conductivity data are obtained:

                        Coating Type                         

                                    1                      143      141      150      146

                                    2                      152      149      137      143

                                    3                      134      133      132      127

                                    4                      129      127      132      129

                                    5                      147      148      144      142

At 5% level of significance, is there any difference in conductivity due to coating type? What is the value of test statistic?

Select one:

a. 16.35

b. 19.0

c. 15

d. 3.06

Question 43

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 400 students taken from this year's student body showed the following number of students in each classification.

We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals

Select one:

a. .54.

b. .65.

c. 2.063.

d. 2.664.

Question 46

An electric company operates a fleet of trucks that provide electrical service to the construction industry. Monthly maintenance cost has been $75 per truck. A random sample of 16 trucks provided a sample mean maintenance cost of $82.50 per month, with a sample standard deviation of $30. Using a 5% level of significance, you like to see whether the mean monthly maintenance cost has increased. Set the appropriate hypotheses and calculate the test statistic

Select one:

a. Z = +/- 1.0

b. t = +/-1.0

c. Z = 1.0

d. t = 1.0

Question 4

1. The list of all means you would compute from all possible samples you could draw of a given size from a given population is called the:

Question 5

1. The larger the sample size, the _______ the standard error of the mean.

What does the central limits theorem tell us about the mean of the sampling distribution of means?

Question 7

What does the central limits theorem tell about the standard deviation of the sampling distribution of means, or standard error?

Question 7

What does the central limits theorem tell about the standard deviation of the sampling distribution of means, or standard error?

A. The standard error is equal to the standard deviation of the overall population divided by the square root of the sample size.

B. The standard error is equal to either 1.97 or 2.57.

C. The standard error is equal to the sample mean times the sample size.

D. The central limits theorem tells us nothing about the standard deviation of the sampling distribution of means, or standard error.

Question 8

Which of the following symbol labels is NOT correct?

    A. σ Standard Deviation of the Population

    B.    s   Standard Deviation of the Sample

    C.    n Sample Size

    D.     μ Mean of the Sample

Question 9

If the mean of a sample is 50 and the standard deviation of the sample is 15, what Z score corresponds to a raw score of 35?

a. +1.5

b. -1.5

c. +1.0

d. - 1.0

Question 10.

Use the interactive website to determine what percent of the cases in the variable distribution described in Question 9 (Mean = 50 SD = 15) fall below the raw score of 35.

a. .1586%

b. 15.86%

c. .7344%

d. 73.44%

Question 11

Given the variable distribution described in Question 9 (Mean = 50 SD = 15), what z score corresponds to a raw score of 65?

a. +1.5

b. +.5

c. +1.0

d.-1.0