##### When corn starch is added with water at 2:1 ratio and you apply strong force, the...

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.

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##### Q. In the worst-case scenario related to casing collapse pressure, explain from a practical point of...

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)

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##### Please answer this question by typing. The answer should be one page A4. Reynolds experiment is...

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.

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##### One of the classical models of epidemics is due to Kermack and McKendrick (1927). The model...

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

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##### A liquid mixture contains 60.0 wt% ethanol (E), 5.0 wt% of a dissolved solute (S), and...

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

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##### answer these two questions 1. Recent developments made in packed and fluidized bed columns 2.Why natural...

1. Recent developments made in packed and fluidized bed columns

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

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##### For a creeping flow, find the viscosity of liquid. Given: solid sphere, 8.0mm=D, density= 1200 kg/m^3...

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

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##### 3. A 200 lbmol/hr stream that is 95 mole% methylformate and 5% methanol is to be...

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

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##### 1. A mixture is 15 mol% Benzene, 40 mol% Toluene and 45 mol% Xylene. Calculate the...

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

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##### 2. In crude oil refineries where the corrosion occurs are atmospheric and vacuum crude distillation and...

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

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##### Compute the pressure drop associated with the flowrate in the column using the Carman-Kozeny equation for...

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?

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##### At transform boundaries: Question 1 options: plates slide past one another along the surface of the...

At transform boundaries:

Question 1 options:

 plates slide past one another along the surface of the earth plates are moving away from each other plates are moving towards each other

Question 2 (1 point)

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

Question 2 options:

 divergent convergent emergent transform

Question 3 (1 point)

What type of plate boundary mainly surrounds the Antarctic Plate?

Question 3 options:

 convergent divergent transform -

Question 4 (1 point)

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

Question 4 options:

 older and more dense younger and more dense younger and less dense older and less dense

Question 5 (1 point)

At transform-plate boundaries ____________.

Question 5 options:

 earthquakes are common but volcanoes are absent volcanoes are common but earthquakes do not occur both earthquakes and volcanoes are common

Question 6 (1 point)

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

Question 6 options:

 convergent divergent transform

Question 7 (1 point)

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

Question 7 options:

 a second series of ridges, perpendicular to the main set deep-ocean trenches transform faults None of the above are correct.

Question 8 (1 point)

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

Question 8 options:

 ridge rocks are hot and therefore of relatively low density the lithospheric plates are thickest at the ridges so that they stand up taller rising ocean currents leave a vacuum above the ridge ridge rocks are mafic, whereas the ocean basin crust consists of ultramafic rock

Question 9 (1 point)

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

Question 9 options:

 divergent convergent emergent transform

Question 10 (1 point)

Which of the following features characterize a divergent plate boundary?

Question 10 options:

 a) mid ocean ridge system if boundary is in the ocean
 b) hydrothermal vents and/or volcanoes
 c) oldest rocks of the ocean crust
 d) shallow focus earthquakes
 e) all of the above
 f) a and b only
 g) a, b, and c only
 h) a, b, and d only

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)

Question 11 options:

 Peru-Chile Trench East African Rift San Andreas Fault System Iceland East coast of the United States

Question 12 (1 point)

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

Question 12 options:

 increases decreases

Question 13 (1 point)

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

Question 13 options:

 rise with respect to material located closer to the ridge axis sink with respect to material located closer to the ridge axis

Question 14 (1 point)

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

Question 14 options:

 The deeper ocean floor is below 1,280°C. The deeper ocean floor is older than 80 million years old. The deeper ocean floor is thick and dense. All of the above are correct.

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.

Question 15 options:

 convergent divergent transform

Question 16 (1 point)

Mid-ocean ridges are ____________.

Question 16 options:

 convergent-plate boundaries divergent-plate boundaries transform-plate boundaries

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##### A nickel block that weighs 30 kg and with an initial temperature of 200 ⁰C is...

A nickel block that weighs 30 kg and with an initial temperature of 200 ⁰C is dropped into an insulated tank that contains 150 L of water at 25 ⁰C.
a. Briefly state what the definition of entropy is. [2 marks]

b. State two relevant assumptions for this question. [2 marks]

c. Calculate the final equilibrium temperature for this system.

Assume that the density and specific heat of water at 25 ⁰C are ρ= 997 kg/m3 and cp = 4.18 kJ/kg·⁰C. [10 marks]

d. Determine the total entropy change for this system. [9 marks]

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##### In the production of ammonia, the amount of nitrogen fed is 50 mol hr-1 set by...

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

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##### In this task the student supposed to do research and identify a major industrial fire accident...

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

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