A piece of steel wire 100 feet long, with a cross-sectional area of 0.004 sq. in., must be
stretched with a pull of 16 pounds when in use. If the modulus of elasticity of steel is
30,000,000 psi:
a) What is the total elongation δ in the entire length of the wire?
b) What tensile stress is produced by the pull?
Hello,
I need someone who is experienced in using COMSOL software to help me with this assignment and the report. I have attached everything in the Bottom. You have to have COMSOL installed in your Laptop to do this assignment.
Motion sickness is a common ailment afflicting travelers. A transdermal patch is available on the market which prevents motion sickness. The small circular patch is applied to the hairless area behind the ear and it gradually delivers the drug scopolamine over a three-day period. A schematic of the patch is shown in the figure. The objective is to model the diffusion of scopolamine through the patch into the skin and look at the efficacy of the patch.
The patch is circular in shape and we can use axisymmetric assumption to formulate the problem. We will consider the computational domain in the skin to a symmetric region around the patch so that the problem remains axisymmetric. The patch consists of three layers: drug reservoir, microporous membrane, and adhesive layers. Dimensions are given in the figure. The Governing equation for this problem is
∂c 1 ∂ ∂c ∂ 2 c = D r ∂t r ∂r ∂r ∂z 2
where c is the concentration of drug scopolamine. Diffusivity of the drug scopolamine in different layers of the patch and the skin are given in table below. Note the molar mass of scopolamine is 303 g/mol. You need to convert it to mol/m 3 for data entry to COMSOL.
Steps:
1. Run the problem for 72 hours,
2. Perform a mesh convergence analysis
3. Plot the concentration profile in the domain after 72 hours
4. Change the diffusivity in the micro-porous membrane to 1 x 10 -8 cm2 /sec and solve the problem again.
Compare the concentration profile obtained with the new diffusivity and discuss the differences.
Diffusivity
cm2 /sec
Reservoir
1 x 10-7
Microporous membrane
1 x 10-10
Adhesive
1 x 10-7
Epidermis
1.45 x 10-9
Dermis
5.8 x 10-7
Initial Drug concentration
mg/mm3
Reservoir
0.08
Microporous membrane
0
Adhesive
0.04
Discussion and explain each 24 point for types of aluminum composite panel Properties forom (article )………………… Write and fill table for all 29 point , not less than 4 pages in Discussion and explain, font size 14 , condition not less artical before 2020>>>> 6 different types >>>> and I need article link or original source … and check my table
P6.1 In a steam-power plant, steam at 200 psia and 600 ° F enters a turbine and exits at 5 psia and 200 ° F. The steam enters the turbine through a 2.5-inchdiamateter pipe with a velocity of 11 ft/s and exits through a 9-inch-diamater. Find the power in kW produced by turbine.
Chapter 6 Problem 11 A hot exhaust gas is heating a boiler to produce superheated steam at 100 psia and 400 ° F. In the meantime, the exhaust gas is cooled from 2500 to 350 ° F. Saturated liquid water (stream 1) at 14.7 psia enters the boiler with a flow rate of 200 lb/h. Superheated steam (stream 2) is used in a turbine, and discharged as saturated steam (stream 3) at 14.7 psia. Assume that the surroundings are at 70 ° F, and the heat capacity of the flue gas is C p =7.606 0.0006077 T , where T is in Rankine and C p is in Btu/(lbmol R).Determine the molar flow rate in mol/s of the exhaust gas needed and the maximum work produced in kJ/s.
P6.19 A steady flow adiabatic turbine receives steam at 650 K and 8200 kPa, and discharges it at 373.15 K and 101.32 kPa. If the flow rate of the steam is 12 kg/s determine(a) The maximum work in kJ/s and
(b) The work loss in kJ/s if the surroundings are at 298.15 K.
P6.35 A steam power plant is using a geothermal energy source. The geothermal source is available at 220 ° C and 2320 kPa with a flow rate of 50 kg/s. The hot water goes through a valve and a flash drum. Steam from the flash drum enters the turbine at 550 kPa and 428.62 K. The discharged steam from the turbine has a quality of x 4 = 0.90. The condenser operates at 15 kPa. The water is a saturated liquid after passing through the condenser.Determine the net work output in kW.
Chapter 6 Problem 42 In a hydropower plant, a hydroturbine operates with a head of 33 m of water. Inlet and outlet conduits are 1.70 m in diameter. If the outlet velocity of the water is 4.6 m/sestimate the power produced by the turbine in kJ/s.
Chapter 6 Problem 46 A farm of windmills supplies a power output of 2 MW for a community. Each windmill has blades 10 m in diameter. At the location of the windmills, the average velocity of the wind is 11 m/s and the average temperature is 20 ° C.Estimate the minimum number of windmills to be installed.
Hello,
Please answer the following questions below in separate documents, follow the guidelines mentioned below
Assignment 7:
Reminder — Include problem Statements and units!
Part 1 :: Non-Textbook Problem
NT-1. (3 pts) It is easy to put off working on an assignment that is not due for a couple months even though we know that starting early results in us learning more and delivering a higher quality product. This homework problem is intended to help you get started on the article critique assignment.
Using your own words and a word processing software (i.e., type your answer), summarize the experiments that are described in the manuscript that is used for the article critique assignment. Include discussion of the following: The objectives of the study; Type of reactor system used; Type of feedstock; Type of microorganisms used; Operational and chemical conditions that were varied; Results and Conclusions (min 500 words).
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Part 2 :: M
(Refer to Chapter 10) I attached chapter 10 below !
You have just designed a tennis ball serving machine. You take it to the court, turn it on and quickly run to the other side of the net to wait for the first serve. The first serve right down the middle, and you return it with brilliance. The second serve is out to the left, the third serve is long, and the fourth serve hits the net.
a) Does your machine have an accuracy or variation problem?
b) Itemize some of the potential causes of each type of error. Consider some of the ‘noise’ discussed in Chapter 10.
Please write 500 words response to the following question … “Do you agree with Lewis’ proposal that there is a universal, time-defying ethical standard of right and wrong. If yes, why? If no, why not?” Note that both agreement and disagreement have significant consequences.
done
Seen
Oct 9th, 2022
Flight dynamics and control Please don’t take this work if you aren’t expert in Aerodynamics subject. First picture I need you to pre-phrase all 4 sentences as much as possible(they should be completely different sentences with the same meaning). for the Hw5 part, please sketch by hand as good as possible and add sentences to clarify the sketch if needed. Thanks.
please I need help with 7 slides of urban grains between Barcelona and Paris . See the attachment below of the rubric .. Assignment 1 |Elements of Urban Design
Course:
ARCH 344
Theories of Urban Design
Instructor:
Ms. Majd Melhim
Submission Mode:
Groups (4 students per group)
Submission Date:
Wednesday 5th Oct.
(due before 10:00 am)
Submission type:
PDF
Grade:
5%
Referring to Lecture 1 – Introduction to Urban Design, Elements of Urban Form were explained in general.
o Urban Structure
o Urban Grain
o Density Mix
o Height and Massing
o Streetscape Landscape
o Façade Interface
In your group, choose elements of the above and do an in-depth reading and searching about them providing a comprehensive comparative analysis on case studies as part of the group work.
→ A group of 4 will cover 4 elements. A group of 3 will cover 3 elements.
→ Give a coherent presentation summary. (25 – 30slides maximum).
Include the following:
1. For each element – A thorough explanation and definition.
2. For each element – choose 2 international examplesof cities to clarify the definition providing a description and explanation of the related urban qualities. Ideally the 2 examples should contrast in a way or another from the point of view you are studying. (Use maps, diagrams, photographs, and infographics).
3. As a group, choose 1 neighborhood or district in Riyadh city (it could be the neighborhood you live in or regularly visit). Provide an analysis of the neighborhood explaining and reflecting on all chosen elements. (Use maps, diagrams, photographs, and infographics).
4. Discuss how these elements influence lifestyle and human behavior within the different cities you studied.
5. Names of all group members should be included.
Flight dynamics and control Please don’t take this work if you aren’t expert in Aerodynamics subject. First picture I need you to pre-phrase all 4 sentences as much as possible(they should be completely different sentences with the same meaning). for the Hw5 part, please answer them carefully and sketch as good as possible. Thanks.