Investigating Magnetic Pendulum Essay Example

Investigating Magnetic Pendulum Paper Every magnet has two poles, North and South. When it is hung freely, it always settles in the direction North and South of the Earth. The following experiment is about the properties of magnetic pendulum. In all experiments find the time period of oscillation, and find relation in the direction of vibration and the time period of pendulum. Hypothesis: The effect of changing the vibration direction of magnetic pendulum on time period of the 20 constant oscillations. Apparatus: 1. Color indicated lab magnets 2. Strings and threads 3. Solution Tape (Transparent) 4. Measuring Scale (1 feet) 5. Set of compasses 6. Lab stand 7. Stopwatch 8. Scissors Methodology: A For Single magnetic pendulum investigation: 1. Hang a bar magnet horizontally using the thread string, tied in balance with the lab stand. The thread should be strongly tied with the magnet stand. 2. Make sure the magnet is not rotating from its point of centre. This is done in order to allow precise timed readings, as the oscillation progresses smoothly. 3. Use two or more compasses to check the North. Keep the compasses at a 1 meter distance from the magnets to avoid unnecessary deflection 4. Vibrate it in the direction as shown in the diagrams below. 5. Repeat steps 1-2 for varying directions Note: The side view of all direction combinations is in the horizontal plane. The top view uses vertical and horizontal terms in its own respective sense i. e. the as viewed from the birds eye projection. Part 1: Constant: 20 oscillations Distance of the string i. e. from the tied knot of the stand to the magnet = 6 Variables: Time (seconds) and Direction (arrow) of magnet pendulum swings We will write a custom essay sample on Investigating Magnetic Pendulum specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Investigating Magnetic Pendulum specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Investigating Magnetic Pendulum specifically for you FOR ONLY $16.38 $13.9/page Hire Writer In part 1 of the investigation, the magnet will be swung across constant amplitude with the constant no. of 20 oscillations. With each changing direction, the time period for the 20 oscillations will be noted down on paper. Then, the readings will allow us to deduce if the changing direction of magnet has an effect on the time period or not. Below are the four directions, named A, B, C and D along their time period readings. As per the results of the investigation, the change in the direction of vibration of the magnet for 20 oscillations does not affect the time period of the oscillation. As we can see he comparison chart above, the values for directions A, B, C and D are almost same, with very minuscule micro second differences. The possible uncertainty here can be human error in timing the experiment and secondly, the quality of magnets i. e. minor change in size and weight. Moreover, the balance of the string attached was not at most in perfect form, hence the unnecessary rotating of the magnets from the point of tied knot must have affected the time period readings. Hence, the part 1 of the investigation comes to suggests that the change in direction of the vibration of the magnet does not affect the time period of the oscillations. Part 2: Pole Combination A Methodology: B For Dual magnetic pendulum investigation: 1. Hang a bar magnet horizontally with the help of two strings. 2. Now put another magnet just below the hanging magnet, in the same direction as the hanging magnet, with similar poles facing each others. 3. Using the thread string, tied in balance with the lab stand. The thread should be strongly tied with the magnet stand. 4. Make sure the magnet is not rotating from its point of centre. This is done in order to allow precise timed readings, as the oscillation progresses smoothly. 5. Change the distance between the two magnets, keeping the oscillations constant at 20 and then note the change in the time period. 6. Now, vibrate the magnet (for different directions) with small amplitude, first along the length then along with width. Measure the time period of vibration. Also find the rate of decrease in the amplitude of vibration. 7. Repeat 1-6 for varying direction combinations. As per the results for part 2 of the investigation, we put hanged a magnet of the same size as used in part 1 of the investigation by a tied string, making it a dynamic object. Then, we placed a stationery magnet of the same size below it. As we vibrated the dynamic magnet along its width, we slightly altered the distance between the stationery magnet and the dynamic magnet to see if had affect on the oscillations time period. Now, the interesting part of the investigation arises. As you can see from the comparison chart of the same pole combination of N-N to S-S, a slight change in distance between the two magnets, that is a (1.6 minus 1. 0 = 0. 6 cm) 0. 6 cm change brings a 2. 0+ second change. The increase in the distance between the two magnets increases the time period for the 20 oscillations. The theory behind this is simple. As the two magnets move closer to each other, they face a higher amount of N to N and S to S repulsion, so they are pushed with a greater force than they would be when they would be apart (as the case is for d=1. 6 cm). This in result decreases the time period, as the 20 oscillations are completed in a lesser time period.

The Essay Sample

The Essay SampleWhen I was in school, we were required to take an essay in a test. It was an hour long and the subject was about two hundred words and my experience in us essay sample.That essay sample was a wonderful resource for people who have experience in teaching, but not much more. It is somewhat similar to the question and answer format used in advanced placement exams. The difference is that the first paragraph of the test and our essay sample both had one main subject, which was written on page one.The essay sample only had one heading, the essay. It wasn't until after I took the test that I realized that they were giving me the same test over again. Not to mention the fact that my overall score would not be very good. My entire score was basically from the first paragraph on.If you don't know what this is, then you might as well call it the essay, although we do teach different subjects in that order. It is a review of our previous work.The difference between our assignmen t and a test is that the test we were writing was related to an area of study, which is not really taught at a regular college or university. We had used some articles in the past in our course work, but not in our college courses.Therefore, the essay sample was necessary to help me get the information I needed to complete the essay. Without that I doubt if I would have been able to make any progress or completed it.That kind of essay sample was a great resource for me. I can't imagine having to write an essay without one, especially if you have experience in teaching. If you have no experience with writing a test, or even a paper, then be sure to look into it.

Black Majority; Book Review essays

Black Majority; Book Review essays Peter Woods Black Majority is a social history examining the cause and effects, both explicit and implicit, of the black majority that emerged in colonial South Carolina. His study spans the time period from the settlement of Carolina through the Stono Rebellion, which took place in 1739. He also takes into consideration and examines certain events that took place in the years immediately preceding the settlement of 1670, as well as those that immediately followed, as a direct result of, the Stono Rebellion and their respective relationships to the black majority that existed in the colony. Wood introduces the book as possibly the first real study of this black majority and its impact on the colony in its earliest years. Wood also proposes that many preceding social-historical studies of colonial South Carolina generally ignore or discredit the significance this overwhelming segment of the population played in the most developmental years of the colonies establishment. Through his studies of various contemporary documents, Peter Wood illustrates a South Carolina that was largely shaped by the numerical majority of the population far more than previous studies have acknowledged. Furthermore, he also suggests a South Carolina that was, in fact, shaped more by the majority of the population than by the whites who, while in the minority, had considerably more power within the social order of the colony. Wood begins his examination of the black majority in colonial South Carolina by explaining the development of the colony itself as a business venture led by a group of men known as the Lords Proprietors. The Proprietors both initially encouraged the use of slave labor and later organized a headright system which would grant land to men bringing servants, black and white alike, with them to the colony. As a result of this headright system, many of the first slaves brought into the colony were forced to migrate along with th...

FOOD SERVICE RESERCH PAPER Research Example | Topics and Well Written Essays - 2250 words

FOOD SERVICE RESERCH - Research Paper Example This includes a number of routines that should be followed to avoid potentially severe health hazards. Food safety policies and actions need to cover the entire food chain, from production to consumption. Food service research aims at analysing and evaluating the problem of food safety as related to food service systems and management. In some food service systems there is less control over food safety. The research on food safety helps to identify weaknesses in these systems. Once weaknesses are identified, modifications can be done such as quality control and implementation of â€Å"Hazard Analysis Critical Control Point† program. Vaclavik and Christian have argued that, there are several pathogenic causes of food borne diseases (52). They also reveal that through conducting research, several problems are identified and this helps to reduce food borne maladies that affect the public. Brief summary of the importance of subject and the need for the research a) Describe the gen eral area to be studied Food service research, aims at analysing and evaluating food safety problems in relation with food service systems and management. The study will be conducted on several restaurants and schools food service providers. The aim will be to analyse their service systems and how they manage them to ensure food safety. ... b) Explain why this topic or area is important to dietetics, FSSM, school nutrition, or the school district in general The research on food service will help to identify the kind of diet that consumers are engaged with and the important of food quality control in schools. The research is important in dietetics, FSSM and school nutrition because the data collected would help to reduce food related diseases and improve the health of consumers (John and Dennis 77).It will also help to improve the performance of students in school due to good health. Objective or purpose of the study The study in food services has a number of objectives. The first one is to identify challenges related to food safety in food service systems and how they affect consumer diet. The second one is to identify the measures taken by food service providers to ensure quality control. The last one is to find out what caution consumers take, to ensure provision of quality goods and services from food providers (Burk e and Turner 81). Hypothesis – what you expect to find or what you expect your results to be Lehmann and Ramao have defined a hypothesis as uncertain explanation for an observation, a scientific problem or experiment, or a phenomenon that can be tested by investigation (12). From the interviews being conducted, we expect less people to be negatively affected by the food they take in restaurants or from fast foods. For example, less cases of food poisoning would indicate that, there are better standards of quality food and more efficient food service systems.Most restaurants should have efficient food service systems that offer the best quality services to consumer. The restaurants must

The Importance of Loss Prevention, and Security within Businesses Essay

The Importance of Loss Prevention, and Security within Businesses - Essay Example From my earliest involvement in loss prevention and security it held a special interest for me. In part this was due to how closely it aligned with the values that I had grown up with, and in part I was fascinated by the level of detail and observation that was required. Theft is an important issue in any industry or setting, such as within hospitals, bars, schools, retail or manufacturing. As a consequence of this the field of loss prevention has developed and has become important in almost every setting. Since beginning my job at Best Buy I have learned a lot about the role that loss prevention plays in retail, as well as methods of being effective in my role. I am currently the manager of the Security and Loss Prevention department at Best Buy. This role has provided me with many opportunities and challenges and it has allowed me to understand the challenges that are associated with security as well as its importance. I have also had the opportunity to do a summer internship at a County Prosecutors Office and to work part time for them following the internship. This gave me the chance to see the police in action and to understand some of the process that occurs. This essay will examine some of the concepts that I have learned in my role Loss is an important aspect of any business. The term refers to the loss of profits due to a wide range of situations such as credit fraud, shoplifting, internal theft, or package theft where some or all of the contents of a package are stolen but not the package itself. Package theft can refer to stealing the contents of the package within the store, or more organized, broader applications such as stealing small packages from shipping containers. Because of this, within any retail store security is extremely important as a method to minimize loss through this means. Different businesses use different methods and strategies of approaching this, and there is no single, universal method of maintaining security. This is because security can be broken in a number of ways, most notably through credit fraud, corporate corruption, and through theft. Theft can occur in a number of different ways and can be the consequence of actions of either staff or customers. As such it is important to have adequate measures of security in place and to ensure that these remain working at their full functionality. Two important parts of loss prevention are avoiding loss that occurs from customers through theft and decietful behavior as well as internal loss from staff and those that have access to business information. Both forms of loss are important, and as a consequence security is important for the functioning of any business. This essay will examine the use of physical security, security actions plans and internal investigations as means of detecting and regulating theft and fraud. Specific examples of types of theft will be examined, as well as a case example of how security is managed in a large business firm. Losses i n retail contribute to significant decreases in the profit a store is able to make. Theft plays a significant role in this, with $107.3 billion lost globally in 2010 as a result of theft . The National Retail Security Survey in 2009 reported that an average of 1.44% of all sales nationwide are lost as a consequence of shrinkage . The term shrinkage refers to the amount of products that are lost between the point of purchase or manufacture, and the point of sale. This loss occurs in a number of ways such as through damaged products and misplaced items. Store managers and those in authority look at many ways of reducing shrinkage of all forms. In 2008, around 35% of this shrinkage was attributed to shoplifting, while 44% was attributed to theft by employees .

Kantian ethics Essay Example for Free

Kantian ethics Essay Kant argued for the use of a normative ethical theory based around the idea that all men have a similar common goal; his theory was absolute (meaning one must follow a common set of rules no matter the scenario) and deontological (focused on actions themselves rather than the outcome of said actions). Kant advised the use of this theory despite it being a priori, meaning he had no observations or experience of the theory in practice. Kant believed that all men have duties which they ought to fulfil, not to gain a desired outcome or avoid a less desirable outcome, but simply because it is their duty. For example, if we can assume it is always wrong to kill people, it would be considered immoral to kill someone even if that action saved the lives of hundreds of people. Similarly, if you consider a foetus to be ‘alive’ then it would be immoral to terminate it no matter the affect it would have on the mother’s physical or mental health. Nearly everyone would find fault in the former, notably fewer for the latter, yet I would hope that the majority would still disagree. David Gauthier suggested that as morality is an agreed concept, designed so that people cannot run amok doing as they please with no consideration for others, an absolutist theory cannot function as rules are subject to interpretation. Let us briefly consider the foetus example once more, if the rule states that it is immoral to take a life, what should be considered a life? Does life start at conception or at birth, or maybe somewhere in between. For this reason, though an absolute theory should be applied to every situation, the rules do not necessarily mean the same thing for every single person. Kant said that in order to create a duty one had to pass it through three tests, the first of which being the law of nature. This law states that in order for something to become a duty it must be capable of being universalised, so everyone must be able to follow said duty ad infinitum. So, for example: ‘jump the queue’ could not become a duty as if everyone jumped the queue there would be no queue to jump. Though this seems sensible, it is possible that immoral acts could be universalised. For example ‘lie to people’ could be universalised even though it is a traditionally immoral act. Not only that but the rule could easily be manipulated by phrasing things differently, for instance ‘everyone called Hector Benjamin Stellyes can jump the queue’ could be universalised as it would most likely only apply to me. To counteract these faults Kant put in place a second law, the law of wills. This stated that for something to become a duty it must be desirable for the population. This rule however, also has faults. In order for a rule to satisfy an entire population (and if this theory was applied worldwide that would be nearly 7.5 billion at the time of writing) it would have to be extremely broad, leaving it open to being interpreted in drastically different ways. If the rule said that one simply had to please the majority, what happens to those who disagree? As all duties are absolute and universal, one would have to do something they disagreed with in order to be moral citizens. Kant attempts to rebuttal this with his argument that all humans still have free will, even though they should follow their duty they don’t have to; humans remain autonomous. However, some would suggest that though humans are nearly always capable of independent thought, it is human nature to be moral. A psychological study by Yale in 2013 on a number of babies that were as of yet unaffected by modern culture (they couldn’t read, speak etc.) making them almost purely instinctual showed that it is human nature to be ‘good’. If society tells you that there are a set list of moral acts, most people will conform to these acts to the best of their ability. So far, we have a set of rules and how this set of rules are constructed, so now I ask: why should anyone follow this philosophy? If we should not consider consequences when doing our duty, what reason do we have to do so? Kant believed there to be two separate reasons to perform any action: the hypothetical imperative and the categorical imperative.

Heathen and Christian Elements in the Wanderer Essay -- Wanderer

Heathen and Christian Elements in the Wanderer      Ã‚  Ã‚   The modern word 'weird' bears only a superficial resemblance to its etymological descendent, wyrd.   What now stands for 'strange' and 'queer' only has an archaic connection to its classical meaning of 'Fate'.   During the process of evolution, however, the word went through many phases, especially during the formation of the English language by the Anglo-Saxons.      Ã‚  Ã‚  Ã‚  Ã‚   Wyrd appears fairly often in Old English poetry and prose, indicating a certain importance in Germanic society.   By following the changes the word undergoes, it is also possible to follow some of the changes that the culture undergoes as well.   A fine example of Old English poetry that employs wyrd on four separate occasions - with four separate meanings - is The Wanderer.      Ã‚  Ã‚  Ã‚  Ã‚   What began as a word firmly rooted in what can only be termed 'heathen' culture eventually began to take on much more religious overtones.   The word wyrd, though originally pagan in meaning, had found an entirely Christian colouring by the time of its use in The Wanderer.      Ã‚  Ã‚  Ã‚  Ã‚   Before beginning an analysis of a single word that appears four times in this poem, it is important to establish a few assumptions about the nature of the piece itself.   Many an article and essay have been written about The Wanderer, trying to define its theme, genre, even its narrator.   Yet the wonderfully ambiguous nature of the poem defies any single explanation, so it remains up to the critical reader to develop his own opinion.      Ã‚  Ã‚  Ã‚  Ã‚   For the purpose of this paper, it is believed that The Wanderer is, in essence, a heathen/pagan poem, rooted firmly in the Germanic culture from whence it hails.   H... ...y Exile of the   Ã‚  Ã‚   Wanderer."   Neophilologus 73 (1989): 119-129.    Dunning, T.P., and A.J.Bliss, eds.   The Wanderer.   London: Methuen   Ã‚  Ã‚  Ã‚   & Co, 1969    Lochrie, Karma.   "Wyrd and the Limits of Human Understanding: a    Thematic Sequence in the Exeter Book."   JEPG 85 (1986): 323-331    Timmer, B.J.   "Wyrd in Anglo-Saxon Prose and Poetry."     Ã‚  Ã‚  Ã‚   Neophilologus 26 (1941): 213-128.    Timmer, B.J.  Ã‚  Ã‚  Ã‚  Ã‚   "Heathen and Christian Elements in Old English Poetry."   Neophilologus 29 (1944): 180-185.      Ã‚  Ã‚   1Due to the lack of punctuation in The Wanderer, it is nigh impossible to know who is narrating, or to whom he/she is referring to at any given time.   Ã‚  Ã‚   2The actual meaning of "sundor à ¦t rune" remains ambiguous.   Though "apart in meditation" seems the most likely, interpretations such as "reading runes" have been put forward.