Field and Flux

In: Computers and Technology

Submitted By cma078
Words 761
Pages 4
Magnetic Field & Flux: Ampere’s Law & Faraday’s Law
Physics 204, Yaverbaum John Jay College of Criminal Justice, the CUNY (The following consists of 4 problems)

I. A long coaxial cable, a section of which is shown above, consists of a solid cylindrical conductor of radius a, surrounded by a hollow coaxial conductor of inner radius b and outer radius c. The two conductors each carry a uniformly distributed current I, but in opposite directions. The current is to the right in the outer cylinder and to the left in the inner cylinder. Assume µ = µo for all materials in this problem. a. Use Ampere's law to determine the magnitude of the magnetic field at a distance r from the axis of the cable in each of the following cases. i. 0 < r < a ii. a < r < b b. What is the magnitude of the magnetic field at a distance r = 2c from the axis of the cable? c. On the axes below, sketch the graph of the magnitude of the magnetic field B as a function of r, for all values of r. You should estimate and draw a reasonable graph for the field between b and c rather than attempting to determine an exact expression for the field in this region.

II. The coaxial cable continues to carry currents I as previously described. In the cross section above, current is directed out of the page toward the reader in the inner cylinder and into the page in the outer cylinder. Point P is located between the inner and outer cylinders, a distance r from the center. A small positive charge q is introduced into the space between the conductors so that when it is at point P its velocity v is directed out of the page, perpendicular to it, and parallel to the axis of the cable. d. i. Determine the magnitude of the force on the charge q at point P in terms of the given quantities. ii. Draw an arrow on the diagram at P to indicate the direction of the force. e. If the current in the outer cylinder were…...

Similar Documents

Fields of Psychology

...Biopsychology: Biopsychology is a field of psychology that analyzes how the brain and neurotransmitters influence our behaviors, thoughts and feelings. This field can be thought of as a combination of basic psychology and neuroscience. Clinical Psychology: Clinical psychology is the branch of psychology concerned with the assessment and treatment of mental illness, abnormal behavior and psychiatric problems. Cognitive Psychology: Cognitive psychology is the branch of psychology that studies mental processes including how people think, perceive, remember and learn. As part of the larger field of cognitive science, this branch of psychology is related to other disciplines including neuroscience, philosophy, and linguistics. Comparative Psychology: Comparative psychology is the branch of psychology concerned with the study of animal behavior. Modern research on animal behavior began with the work of Charles Darwin and Georges Romanes and has continued to grow into a multidisciplinary subject. Today, biologists, psychologists, anthropologists, ecologists, geneticists and many others contribute to the study of animal behavior. Counseling Psychology: Counseling psychology focuses on providing therapeutic treatments to clients who experience a wide variety of symptoms. It is also one of the largest specialty areas within psychology. The Society of Counseling Psychology describes the field as " a psychological specialty [that] facilitates personal and......

Words: 791 - Pages: 4

Business Field

...Business Field uncompleted this is not my own work Career Information & Resources Career Profiles and GuidesCareers-in-Business - Information on various business areas including nonprofit, general management, entrepreneurship and strategic planning.Vault Guides - Insider's information about careers in this area. Features include "Day in the Life" career profiles, employee reviews of careers and companies, and detailed information about key employers in the field. Available through Callisto.Career Center Collection - Career guides, directories, and other publications related to this career field. Available in the Career Center.InsideJobs - Provides descriptive profiles, insightful videos, and helpful career information for thousands of jobs within Business Career Fields and Functions. Accounting * Accountants and Auditors * CalCPA - California Society of Certified Public Accountants * Careers-in-Accounting * Directory of US and International Accounting Associations * Institute of Management Accountants Consulting * Association of Management Consulting Firms * Careers in Consulting * Careers in Management Consulting * Institute of Management Consultants * Management Analysts Entrepreneurship / Small Business * East Bay Chapter of SCORE (Service Corps of Retired Executives) * Kauffman Foundation * US Small Business Administration Finance * Association for Financial Professionals * Becomming A Financial......

Words: 568 - Pages: 3

Field Study

...HOME ECONOMICS: AN INSTRUMENT TO THE FUTURE LIFE OF STUDENTS Home Economics is the profession and field of study that deals with the economics and management of the home and community. Home economics is a field of formal study including such topics as consumer education, institutional management, interior design, home furnishing, cleaning, handicrafts, sewing, clothing and textiles, cooking, nutrition, food preservation, hygiene, child development, and family relationships. It prepares students for homemaking or professional careers. Home Economics is also known as Family and Consumer Sciences. It is study at all levels of education concerned with training for effective home and family living. This includes educating the individual for family life; improving services and goods used in home; and conducting research to discover the changing needs of individuals and families and the means of satisfying those needs. (Colliers Encyclopedia, V.12). In the 1800s, home economics classes were intended to ready young women for their duties in the home. Classes were first in the United States, Canada and Great Britain, followed by Latin America, Asia and Africa. International organizations such as those associated with the United Nations have been involved in starting home economics programs around the world. (, 2013) Home economics is taught at the junior secondary level while senior secondary school introduces students to the rudiments of Home management and......

Words: 884 - Pages: 4

Flux Innovative Chair

...Evaluation & Recommendations The company Flux has grown rapidly since the launch of the Flux chair. The last two years they managed to elaborate their product portfolio for both the consumer market as the business market. Evidently the company’s success is partly due to successful diffusion of their first product -the Flux chair. Flux chair is positioned as a new foldable chair with unique characteristics and visual appearance; a mass producible foldable design chair. This position enabled them to quickly diffuse in the niche market of design furniture. Therefore, their focus was more on the high-end market with an interest in design. Accordingly the chair is highly priced. Both reasons might have made the Flux chair more appealing to businesses than to consumers. The benefits for both targets slightly differ and this could have been communicated better from the start. A better emphasis on the practical benefits for the consumer such as the space saving and weather-proof aspect could have increased the rate of adoption. It is likely Flux has picked up on this issue as they started to better define the consumer market. Likewise they now distinguish a home and garden segment. In addition overall a slight shift in strategy can be detected which enables them to reach the early majority. Such as additional accessories and products to offer a more complete solution set. This will decrease uncertainty among late adopters (Rogers, 1995) (Hoyer & MacInnis, 2001). Also the......

Words: 639 - Pages: 3

Field of Dreams: Citi Field

...Field Of Dreams: Citi Field A road trip to a Mets game is always filled with anticipation of fun. The one and a half hour drive seems to take an eternity. Citi Field can be seen halfway over the Whitestone Bridge. Resembling Ebbets Field, its stunning architecture takes my breath away. In the parking lot, you realize just how enormous the stadium is. It looks so much larger than it is portrayed on television. Right outside the stadium, the song Meet the Mets is usually playing through the speakers. A loop of the PA announcer listing all the things that are not allowed in the stadium is played overtop the song. A security person gently pats your pockets and then signals for you to go through the turnstile. Inside, the Jackie Robinson Rotunda is beautifully designed with staircases and escalators to bring you to field level seats. To the right is the Mets Hall of Fame and team store. The hall of fame is filled with archival pictures and memorabilia. Straight ahead is a sculpture of Jackie Robinson’s number 42. First timers race to the sculpture to take pictures with it. At the top of the escalator, you finally get the sense that you’re at a ballpark. The aromas of hot dogs, burgers, and fresh roasted peanuts fill the air. The field comes into sight after you walk a little bit to the left or right. The scoreboards glisten from the sunlight. The dirt looks as soft as a pillow, and the freshly cut grass smells almost fragrant. The foul lines are pristinely...

Words: 466 - Pages: 2

Health Field

...tremendous experience from working within multiple settings in the health field. She provided vital information during the interview from her past experiences which will enable me to learn and grow from. I provided my mother with background information regarding the purpose of the interview assignment. I began the interview by asking her how she came about her career in the healthcare field, she responded, “What got me started in this field is that I had prior experience at MassMutual Financial group overseeing a team of associates and reviewing their work loads and assignments. When I saw the opportunity to be a staffing coordinator, at Wingate of Wilbraham, it seemed to be a much less stressful job than the one at MassMutual. I never received a degree but the combination of college courses that I took which included pre-med, pre-nursing, counseling psychology and then business management and all the jobs I had within those related fields subsequently gave me a variety and a mix of experience and knowledge for my current position.” This really showed me how valuable work experience, coupled with academic experience, can be helpful when applying for jobs or deciding what type of jobs to apply for. The interview discussion then moved onto the work environment she dealt with and her daily duties. I asked her about her previous working conditions as well and what skills were utilized and necessary in her field. She responded by stating, “My daily duties are to insure that a 24......

Words: 1587 - Pages: 7

The Helping Field

...There are so many wonderful reasons why someone chooses to become part of the helping field. For me, it’s because I have a big heart and helping others bring me joy. I love helping others. I have no clue where it came from. I was born to druggies and became a mom at two years of age to my brothers and sisters. So taking care of others is all I have ever known. I tried twice to leave this field and I ended up getting injured. Helping others is what I do best and it is what I love, it’s who I am. My peers also choose the helping field for reason of their unique own. Jason Hudson has a lot to bring to the human service field with his background, his medical background (from the Army) can help him better understands a person’s needs and wants. Jason chooses to leave the medical field and switch to human service due to getting burnt out. Jason can also relate to those who need help from human services because in his past. There was a time in his life where he needed help. Having had help in the past, Jason is able to see the flaws in this field and can better help others void the hassle when getting services. Nicole Brandenburg chose the human service field because it is something she is passionate, energetic and empathic to those who really need help. She has a caring heart. It also brings her great excitement to help others. Jennifer chooses the helping field because she has been threw and experiences a lot in her life time and she wants to give back to others who......

Words: 427 - Pages: 2

Electric Fields

... ELECTRIC FIELDS Laboratory No. 6 Written By: Ali Al-Qubbej Lab Section: 04 Lab Partner: Braden Jople Date Performed 09/03/14 Instructor: Dr. Huh ABSTRACT The main objective of this experiment was to map lines like those of the electric filed around charged objects, each having a different shape ranging from 1 V, 1.5V, 2V, 2.5V, 3V, 3.5V, and 4V. Positive charge means that the electric field is going away, while the negative charge means that the electric field is going in to the other side of the map. The apparatus provided during the experiment was, field mapping apparatus, special coated paper, “Energy One” variable power supply (model XP-4), digital multimeter (DMM), probes and graph paper. The theory behind this experiment is described in the form of: Es = - ΔV / Δs, where Es is the electric field related to the potential V, ΔV is the difference in potential between two adjacent lines of equipotential, and Δs is the distance between the same two equipotential lines. DATA ANALYSIS This experiment was to record the values and record them on the special coated paper to determine the electric field direction and the strength of the charge. Figure 1 shows the first section of the laboratory experiment, there were two circles both on the negative and positive coordinate; those circles have a charge of 0V and 5V respectively. The maximum and minimum electric field in figure 1 was 62.50......

Words: 527 - Pages: 3

Right Field

...potential future, can lead to reminisce of lost opportunities. Many don’t realize the opportunities they failed to benefit from, when constructing their lives for success. The most common barrier in these kinds of situations is yourself; whether or not you have the willpower and motivation to pursue your abilities. In the game of baseball the outfielders are resembled as loners, specifically the right fielders. This particular fielder is usually entitled as the worst of the team. Dybek says “He didn’t necessarily choose right field as much as accept it” (Dybek, 1). This quote refers to the indolence of many people of our society. Nothing in life comes easy, without hard work. Once people are positioned in upsetting circumstances, they no longer put forth the effort to overcome them. The decisions they make now to not apply themselves, will have a negative results in the long run. When the boy was found he was laying face down in the field, Stuart then says “His mitt had been pinned under his body and was coated with an almost luminescent gray film” (Dybek, 3). I feel as though the mitt in this scenario is in demonstration of someone’s life, and the imagery of the film represents how your past can look, when reminiscing on the chances missed. Circumstances like this happen to people countless times, but only few learn from and hear of these experiences. The story says “ Perhaps he wanted the new right fielder, whoever he’d be, to notice and wonder about who......

Words: 346 - Pages: 2

In Flanders Field

...During World War One, poet John McCrae wrote many pieces of literature. He published many short stories but was most famous for his poem In Flanders Fields. This poem uses many instances of symbolism and imagery to convey the main idea to the reader. In the first line it says "In Flanders Fields the poppies blow". The poppy is known as a symbol of sleep. The last line "We shall not sleep, though poppies grow / In Flanders Fields" point to this fact. Some kinds of poppies can be used to derive opium, from which morphine can be made. Morphine is one of the strongest painkillers and was often used to put a wounded soldier to sleep. Sometimes medical doctors used it in a higher dose to put the incurably wounded out of their misery. Poppies were also the only plant that grew in the western front during the war, and during that time poppies were constantly being blown into the author's face, which gave him reason enough and the inspiration to include them in the poem. Other symbols in this poem include the larks, sited in lines four and five. The idea McCrae conveys in this stanza is the fragility of human life "The larks, still bravely singing, fly / Scarce heard amid the guns below." The lark (bird) is known for its careless free spirit that symbolizes the oblivious people living in areas free from war. Meaning while life is being snatched away from the soldiers, people like us are carrying on with our carefree lives oblivious to the horrors of the battlefield. The last stanza...

Words: 339 - Pages: 2

Field of Tears

...Field of Tears - genaflevering Are the horrible memories from the Irish Civil War still lingering in the grass on the field? What does the tears of the grandfather symbolize? “Field of Tears” is a short story written by Declan J. Connaughton in which he tells the story about an old man and his granddaughter called Rita. She frequently comes to visit him at the nursing home where he has to stay against her will, simply because he is too old and weak. She knows this and it’s also one of the reasons why she goes to see him that often, to spend time with him before it’s too late which makes every second she has with him precious. Rita wants to take him out for a drive and the grandfather guides her to a field he remembers from when he was stationed during the Civil War. As he sits in the car facing the sea, he starts to recall a memory from the field and suddenly Rita isn’t there anymore but his comrades from the war are. “Field of Tears” is a historical fiction short story that follows a man who took part in the Irish Civil War which followed the Irish War of Independence, where the Irish people fought for the right to be an Irish Republic. England wouldn’t let them have their will but they made a treaty that ended the British rule in most of Ireland. This wasn’t satisfying enough for some of the Irish republicans that didn’t want to take part in the “Provisional Government”, who supported the treaty and this lead to a civil war between these two opposing groups. The......

Words: 1125 - Pages: 5

Magnetic Field Charateristics Report

...P7/P8 Magnetic Field Characteristics report. Magnetic Flux and Flux Density- The magnetic flux of a material is the amount of magnetic field or magnetic flux density passing through a surface. You can calculate this by finding the average magnetic field times the perpendicular area. Magnetic flux is given the symbol Φ and is measured in units called Webers (Wb). For a closed surface, the sum of magnetic flux is always equal to zero. The magnetic flux density can also be known as the density of magnetic lines of force that pass through specific area. The flux density is measured in the units of ‘tesla’. 1 T is equal to 1 Wbm -2 . After analysing the B/H graph below you can see that the more magnetic field strength the greater flux density, if we look at the steel, when it reaches a flux density value of 1.5 then it reaches its magnetic saturation this is when it can’t  increase the magnetization of the material further, this means that the flux density will more then likely level off. The flux density increases highly as the field strength increases than when it reaches the magnetic saturation point then it won't increase much more. The magnetic saturation point puts a limit on the maximum effective strength to drive your coil. There will be no benefit at all if you exceed this, only wasted heat. Excess heat on the coil can also cause it to fail. The material permeability maximum point is when the graph starts to curve and go away from the straight positive correlation......

Words: 1206 - Pages: 5

Mrs. Fields

...Overview Mrs. Fields Cookies was founded by Debbi Fields in the late 1970s. She and her husband Randy Fields opened their first store in 1977 in Palo Alto, California, selling homemade-style cookies which quickly grew in popularity. Products Mrs. Fields Cookies came in 14 varieties. All baked products were made on premises in the individual stores and the company especially focused on the fresh cookies. If the cookies are not sold within two hours, they were given away and discarded. Competitors Mrs. Fields competitors included New York’s David’s Cookies, Atlanta’s Original Great American Chocolate Chip Cookie Company, and the Nestle Company’s Original Cookie Co. Challenges 1. Low barriers to entry and mall locations competition In the early 1980s, cookies were cheap to make and the barriers of sweet snack industry to entry were low. There were many cookies producers and many consumers in the market, and no business had total control over the market price. Because some 80% of Mrs. Fields outlets were in shopping malls, so the competition for the most favorable mall locations was fierce. 2. Franchising Financing and performance of exchange market Mrs. Fields had consistently refused to franchise their stores, because “she viewed franchising as a loss of control over the end product and loss of touch with the customers”. To find bank financing and additional capital for expansion, Mrs. Fields tried to go public and made initial public offering on the London......

Words: 772 - Pages: 4

Field Analysis:

...FIELD ANALYSIS: UNDERSTANDING THE KEY PARTIES AND THEIR ROLE IN A NEGOTIATION Instructions: For purposes of this assignment, assume that you are the negotiator who is tasked with a salary (on call time, step increases, overtime for captains and majors) and benefits (insurance while employed, insurance after retirement, accrual of leave time, retirement multipliers) dispute between a large municipal county with a strong mayor and the sheriff’s department for the county. You are negotiating the contract on behalf of the sheriff’s office. The purpose of this activity is to give you an opportunity to construct a field analysis on your relationship with a specific other negotiator. This tool should be helpful when negotiators have to consider multiple parties—on their own side and on the other side—who can affect a negotiation outcome, and whose needs and interests must be considered. The metaphor for this planning tool is a soccer field (see diagram below). On the field would be members of your team and members of the other team (A, B). On the sidelines are backup players, coaches, trainers and other team personnel (C). In the stands are “fans” who are watching the negotiation, members of the media, and other direct observers (D). Finally, the elements outside the stadium--the location of the stadium, the weather, and other “context factors” which can shape how the game evolves and is played (E) YOU/YOUR TEAM | OTHER/OTHER’S TEAM | 1. Who is on my team on the field...

Words: 480 - Pages: 2


...your decision? : What are your intellectual influences? What writers, books, professors, concepts in college have shaped you? : How has your undergraduate academic experience prepared you for graduate/professional school? : What are two or three of the academic accomplishments which have most prepared you? : What research have you conducted? What did you learn from it? : What non-academic experiences contributed to your choice of school and/or career? (work, volunteer, family) : Do you have specific career plans? How does graduate or professional school pertain to them? : How much more education are you interested in? : What's the most important thing the admissions committee should know about you? : Think of a professor in your field that you've had already and that you like and respect. If this person were reading your application essay, what would most impress him or her? :: Do . . . : Answer all the questions asked. If you are applying to more than one program, you may find that each application asks a different question or setof questions, and that you don't really feel like writing a bunch of different responses. However, you should avoid the temptation to submit the same essay for different questions—it's far better to tailor your response to each question and each school. If you do find yourself short on time and must tailor one basic essay to fit a number of different questions from a number of different schools, target your essay to your first-choice......

Words: 1287 - Pages: 6