When corn starch is added with water at 2:1 ratio and you apply strong force, the mixture will behave like solid. However, when you apply slow and steady force on the mixture, it will behave like liquid. Describe how this mixture can behave as a solid and liquid when different force is applied? Mention the type of non-Newtonian fluid for this mixture.

Q. In the worst-case scenario related to casing collapse pressure, explain from a practical point of view why the casing internal pressure is considered partially or completely empty. In other words, under what conditions the casing string can be empty or partially empty.

(Note: This question needs to be answered in the context of Petroleum Drilling Engineering advance level)

Please answer this question by typing. The answer should be one page A4.

1. Reynolds experiment is used to study flow behavior of fluids by slowly and steadily injecting dye into a pipe. The state of fluid flow will be determined and compared with the results from the calculation of the Reynolds number.
   1. Discuss observations made in the Reynolds number.
   2. Analyze various factors which effect the flow of fluids.

One of the classical models of epidemics is due to Kermack and McKendrick (1927). The model considers three classes of individuals: at time t, I(t) is the number of infected people in the population, S(t) is the number of non-infected susceptible people, and R(t) is the number of “removed” people (either cured or deceased). This model is often referred to as the “SIR” model (where each letter is pronounced, or pronounced as the word “sir”). The equations of the model are

S’(t) = −r*S*I

I’(t) = r*S*I − γ*I

R’(t) = γ*I

5. (8 pts) Eliminate t from the S and I equations to give a single ODE relating S and I by dividing one equation by the other (and justifying this process by the chain rule). Solve this ODE and sketch the solution curves. Compare these solution curves to your direction field picture

A liquid mixture contains 60.0 wt% ethanol (E), 5.0 wt% of a dissolved solute (S), and the
balance water (W). A stream of this mixture is fed to a continuous distillation column
operating at steady-state. Product streams emerge at the top and bottom of the column.
The column design calls for the product streams to have equal mass flow rates and for the
top stream to contain 90.0 wt% ethanol and no S. (Hint: In order to solve this problem, you
will need to assume a basis for calculation (100 kg/hr), draw and fully label a process flow or
block diagram, and check to make sure that it can be solved for all unknown stream flows
and composition). What is the flowrate of the bottom stream (in kg/hr)?

A. 10-25 kg/hr
B. 26-50 kg/hr
C. 51-75 kg/hr
D. 76-100 kg/hr
E. 100 – 125 kg/hr

answer these two questions

1. Recent developments made in packed and fluidized bed columns

2.Why natural processes are irreversible, explain by taking real life examples.

For a creeping flow, find the viscosity of liquid. Given: solid sphere, 8.0mm=D, density= 1200 kg/m^3 is released in a liquid with density= 1100 kg/m^3 at a terminal velocity 9.00mm/s

3. A 200 lbmol/hr stream that is 95 mole% methylformate and 5% methanol is to be recovered from top of a distillation column. The feed to the column is 20 mole% methylformate and 80 mol% methanol, and 98% of the methylformate entering the column is contained in the distillate stream leaving the top of the column. (30 points) • Draw and label a flow chart of the process and do the degree of freedom analysis • Calculate the mass and mole fractions of methanol in the bottom stream and determine the molar flow rates of methanol and methylformate in the bottom and feed streams. Molecular weight of methanol = 32.04 g/mol Molecular weight of methylformate = 60.05 g/mol

1. A mixture is 15 mol% Benzene, 40 mol% Toluene and 45 mol% Xylene. Calculate the mass fraction of each compound. What is the average molecular weight of the mixture? What would be the mass (kg) of a sample containing 250 kmol of Toluene ? (20 points) Benzene (C6H6) – 78.11 g/mol Toluene (C7H8) – 92.13 g/mol Xylene (C8H10) – 106.16 g/mol

2. In crude oil refineries where the corrosion occurs are atmospheric and vacuum crude distillation and catalytic reforming. Corrosion also takes place in amine regenerators, boilers, sour water strippers, and hydrogen manufacturing units. Corrosion in these locations is caused either by contaminants present in the crude oil is introduced to the process equipment or by species generated by the different processes. Provide a suitable method to prevent the corrosion formation in the refinery units with a suitable process diagram and explain. (5.0

Compute the pressure drop associated with the flowrate in the column using the Carman-Kozeny equation for d = 0.1 mm. What are the assumptions associated with the application of this expression for the pressure drop? Can such assumptions be considered valid for this system, and why or why not?

At transform boundaries:

Question 1 options:

Question 2 (1 point)

Which of the following is a type of plate boundary where new sea floor is formed?

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Question 3 (1 point)

What type of plate boundary mainly surrounds the Antarctic Plate?

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Question 4 (1 point)

The farther from the mid ocean ridge, the ___________ the oceanic lithosphere

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Question 5 (1 point)

At transform-plate boundaries ____________.

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Question 6 (1 point)

The San Andreas Fault zone in southern California is an example of a ____________-plate boundary.

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Question 7 (1 point)

Segments of the mid-ocean ridge system are offset. Between the offset segments we observe ____________.

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Question 8 (1 point)

The mid-ocean ridges are elevated above the surrounding sea floor because ____________.

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Question 9 (1 point)

Which of the following is a type of plate boundary where new sea floor is formed?

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Question 10 (1 point)

Which of the following features characterize a divergent plate boundary?

Question 10 options:

Question 11 (1 point)

Examples of divergent boundary areas located on land (above sea level where we can see them!) include: (select all that apply)

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Question 12 (1 point)

The age of oceanic crust ____________ with increasing distance from a mid-ocean ridge.

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Question 13 (1 point)

As lithosphere cools to the sides of a mid-ocean ridge, it begins to ____________.

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Question 14 (1 point)

Why is the ocean deeper over older ocean floor than younger ocean floor?

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Question 15 (1 point)

Iceland is one of the few places in the world that is both above sea level and situated atop a ____________ plate boundary.

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Question 16 (1 point)

Mid-ocean ridges are ____________.

Question 16 options:

In the production of ammonia, the amount of nitrogen fed is 50 mol hr-1 set by the stoichiometric ratio of hydrogen to nitrogen for the feed stream (1). In addition, the fed nitrogen contains 0.2 mol hr-1 of inert gases (argon), which gradually build up in the recycle stream until the process is affected adversely. The single pass conversion is 20%. If all NH3 is removed in a separation step, and a purge stream (6) of 2 mol hr-1 is used to maintain the Ar mol percentage in the recycle stream at 10%. a. Calculate the composition of the purge stream. b. What is the mass% of the feed? (MW N: 14gmol-1 H: 1gmol-1Ar: 40gmol-1) c. Determine the production rate of ammonia in mol hr-1 d. Calculate the flowrate of N2 (entering the reactor). PLEASE EXPLAIN IN GREAT DETAIL

In this task the student supposed to do research and identify a major industrial fire accident in a chemical process plant or petroleum industry that resulted in huge loss of life and property. ASnd submit a report of about 2000 words on the critical analysis of the accident covering the following points –

(i) Detailed description about the accident including information on loss of life, damage to property and effect on environment.

(ii) Root cause analysis of the accident

(iii) Safety precautions that could have prevented the accident from happening

(iv) References