Question

In: Other

You are provided with some weight of specimen data as a function of time following exposure...

You are provided with some weight of specimen data as a function of time following exposure of

an alloy specimen to oxygen at high temperature.

(i) Determine whether or not the alloy follows a particular oxidation rate law during the

initial one hour period; if so, specify which one and determine the oxidation rate constant.

(ii) Is there any change in the oxidation rate law in the following 20 hour period? If so,

specify the new law and estimate the oxidation rate constant.

(iii) Account for the change in oxidation rate after 25 hours exposure and calculate the

relevant oxidation rate constant in the period : 25 hours to 100 hours.

Total surface area of specimen : 10cm²

Initial weight of specimen : 1000 mg

Oxidation time Weight of specimen Oxidation time Weight of specimen

(mg) (mg)

1 minute 1000.1 15 h 1023.2

2 minute 1000.2 20 h 1026.3

5 minute 1000.5 25 h 1029.0

20 minute 1001.9 30 h 1029.5

40 minute 1004.1 40 h 1030.0

60 minute 1005.9 50 h 1025.0

2 h 1008.3 70 h 1015.0

3 h 1010.2 80 h 1010.0

4 h 1011.5 100 h 1000.0

10 h 1018.7

(iv) If the corresponding scale thickness data are as follows, plot the relationship between y and t for the full period: 0 to 100 hours.

Oxidation time Scale thickness (µm)

0 minutes 0

5 minutes 0.5

40 minutes 3.9

60 minutes 5.8

10 hours 18.9

20 hours 26.0

25 hours 28.0

30 hours 28.5

Expert Solution

4. Pls follow the plot of q4 of thichness vs time

Amanda K answered 2 years ago

The National Center for Health Statistics (NCHS) provided data on the distribution of weight (in categories)...

The National Center for Health Statistics (NCHS) provided data on the distribution of weight (in categories) among Americans in 2002. The distribution was based on specific values of body mass index (BMI) computed as weight in kilograms over height in meters squared. Underweight was defined as BMI< 18.5, Normal weight as BMI between 18.5 and 24.9, overweight as BMI between 25 and 29.9 and obese as BMI of 30 or greater. Americans in 2002 were distributed as follows: 2% Underweight,...

Calculate Mn & Mw, and the polydispersity index (PI) for the molecular weight data provided below...

Calculate Mn & Mw, and the polydispersity index (PI) for the molecular weight data provided below and graph. Repeat your calculations if the molecular weight data were changed by increasing the frequency (# of chains) of the following molecular weights by 500 for molecular weights of 600, 700, 800, 900, 1000, and 1100 and graph. Explain what happens to the PI and what this means in terms of molecular weight distribution. Input data and graph in Excel or similar graphing...

4. The following data were obtained from a creep test for a specimen having an initial...

4. The following data were obtained from a creep test for a specimen having an initial gage length of 2.0 in. and an initial diameter of 0.6 in. The initial stress applied to the material is 10,000 psi. The diameter of the specimen after fracture is 0.52 in. Length Between Gage Marks ( (in.) Time (h) Strain (in./in.) 2.004 0 0.002 2.01 100 0.004 2.02 200 0.006 2.03 400 0.008 2.045 1000 0.012 2.075 2000 0.020 2.135 4000 0.035 2.193...

Question 5: Data on the total tobacco exposure time (in seconds) for G-rated animated films with...

Question 5: Data on the total tobacco exposure time (in seconds) for G-rated animated films with tobacco use released between 1937 and 1997 produced by Walt Disney, Inc. are as follows: 223 176 548 37 158 51 299 37 11 165 74 92 6 23 206 9 Similar data for G-rated animated films with tobacco use produced by MGM/United Artists, Warner Brothers, Universal, and Twentieth Century Fox are as follows: 205 162 6 1 117 5 91 155 24 55...

2. The data of the velocity of a body is given as a function of time...

2. The data of the velocity of a body is given as a function of time in the table below. Determine the value of the velocity at t=16 seconds using: (this is the table) t(s) 0 15 18 22 v(t) 22 24 37 25 a) Newton’s divided difference first order polynomial method. b) Newton’s divided difference second order polynomial method. c) Newton’s divided difference third order polynomial method.

MLM Corporation, has provided you the following business operations data:

MLM Corporation, has provided you the following business operations data: Items Value Equipment cost $8,750 Salvage value, equipment, Year 4 $750 Opportunity cost $0 Externalities (cannibalization) $0 Units sold, Year 1 12,000 Annual change in units sold, after Year 1 13% Sales price per unit, Year 1 $1.65 Annual change in sales price, after Year 1 3% Variable cost per unit (VC), Year 1 $1.07 Annual change in VC, after Year 1 3% Nonvariable cost (Non-VC), Year 1 $2,120 Annual...

The following data have been provided to you: (all amounts are in dollars) ...

The following data have been provided to you: (all amounts are in dollars) April May Sales 150,000 157,500 Merchandise purchases 107,000 112,400 Operating expenses: Payroll 13,600 14,280 Advertising 5,400 5,700 Rent 2,500 2,500 Depreciation 7,500 7,500 End of April balances: Cash 30,000 Bank loan payable 26,000 Additional data: Sales are 40% cash and 60% on...

Suppose the government of a small nation has provided the following data: Adult Population 698,000 Full-time...

Suppose the government of a small nation has provided the following data: Adult Population 698,000 Full-time Workers 369,940 Part-time Workers 21,638 Unemployed workers actively looking for work 36,703 Unemployed workers who have become discouraged 7,678 Part-time workers under 16 4,886 Unemployed workers under 16 actively looking for work 2,094 Instructions: Round your answers 2 decimal places. What is the labor force participation rate? percent What is the unemployment rate? percent

QUESTION 2: You have been provided with a side showing the calculation of adjusted exposure. Assume...

QUESTION 2: You have been provided with a side showing the calculation of adjusted exposure. Assume XYZ Company enters into an interest rate swap contract with Omega Bank that provides that XYZ will pay a floating rate of interest (assume LIBOR + 1%) and receive a 5% fixed rate of interest. This interest rate swap is intended to be a hedge of an XYZ floating rate liability. Describe the methodology to calculate gross exposure for the interest rate swap. Hint:...

Your financial adviser provided you with the following data about combinations of a Technology and a...

Your financial adviser provided you with the following data about combinations of a Technology and a Utility fund: E(r) σ weight invested in Technology fund weight invested in Utility fund ORP 12 30 50 50 MVP 6 24 70 30 Your risk aversion coefficient is A=4 and the risk free rate is 2%. If you have $1000, how much money do you need to invest in the Technology fund to maximize your utility?