The resistance of a wire Essay Example for Free

The resistance of a wire Essay For my experiment I will use Constantan, This is because it gave me the widest range of results, so it makes it easier for us users to see and understand whats going on. The thickness I will use will be 32. This is also because it gave me the widest range of results. I also chose this type of wire because it did not get hot very easily. This is a good thing because it will be a fairer test (when temperatures stay relatively the same) and there is less hazards involved. The length of wire I will use- I will use the following lengths of wire-. I think these lengths of wire is suitable for the experiment. 10 lengths is good enough to show us a general pattern. Equipment- -Ammeter -A 1m ruler (to measure length of wire) -At least 8 electrical cables -Voltmeter -Power Supply unit -at least 600cm of Constantan -crocodile clips Method- 1. Connect the electrical circuit as shown in the preliminary work. Make sure all the wires all connected correctly. Note that the voltmeter has to be connected in parallel because it has a very high resistance, current will not be able to go through. 2. Before doing anything else, set the voltage of the power supply unit to 0V. Then turn on the power Supply unit (PSU). 3. Connect the piece of wire of desired length to the two crocodile clips (both ends) 4. Now set the PSU dial to 2. Turn on the Machine. Allow readings to settle then record readings from the ammeter and the voltmeter. 5. Turn of Machine. (avoid the wire getting hot) 6. Do the same adjusting the dial switched to 2, 4 and 6. Change the lengths of the wire each time using the following lengths- 20, 40 60, 80,100, 120,140,160,180,200cm. Record the readings from the ammeter and the voltmeter. 7. Once you have finished all the experiments you have to divide the volts by the current (amps) to find out the resistance. It is explained how to do this in the analysis later. Analysis Analyzing the Graph- From the pattern on the graph, we can tell that my prediction was correct. An increase of length gives you an increase in resistance. This can be seen because the line of best fit is moving upwards while the length of wire is increased. All the points on the graph are almost on the line of best fit, it was very easy to draw the line of best fit. There were one or two points that did not fit the line completely. These were the last two lengths. 180 and 200cm. This could have happened due to some experimental errors. The graph proves that as the length of the wire increases the resistance of the wire increases proportionally. This means that if we double the length of the wire we also double the resistance. How I calculated the results- Resistance = Voltage / Current So for example: Voltage = 0. 51V, current = 0. 15A. Therefore resistance = 0. 51 / 0. 15 = 3. 95? I then averaged all the results (readings on the dial 2, 4 and 6) to come up with a final pair of results which used to plot on the graph. Conclusion- From the graph we can tell that almost all the points are on the line of best fit. The length of wire and the resistance is directly proportion to each other, as in they rise together. If we double the length of the wire the resistance will too double. This proves that the resistance of the wire will vary according to the length and width of a wire. The longer the wire the higher the resistance. The length of the wire and the resistance rise together. The increase in voltage is increasing the amount of energy transferred every second in the circuit. My theory is, if length of the wire increases, there is less chance for the electrons to go through. Most of them bump into the atoms inside the piece of wire, therefore increases resistance. According to my graph my prediction was correct; a rise in length is a rise in resistance. Evaluation Problems encountered- The problems encountered were very mild except for when we were taking measurements for small lengths of wire. The wire got very hot; it was difficult to take readings because the readings on the meters kept on changing in high ranges. How accurate were my results- My results may not have been extremely accurate however when we draw the line of best fit we can see the pattern quite clearly. It is good enough for us to find and interpret a pattern from the line of best fit. The ruler we used may not have been entirely accurate. Also, the voltmeter and the ammeter is limited to 2 decimal places, and are not entirely stable (the readings are always changing). We can only measure an approximate reading. How ever as I said earlier I feel my results are good enough to show us a general idea of what is happening. Comment of the overall experiment- Overall, I feel that the experiment was done in a quite good state. Yes there were 1 or 2 anomalous results; however the line of best fit still turned out as expected. 10 results is good enough for us to draw a decent and accurate line. All in all most points lie very closely to the line of best fit. The line is quite reliable as it turned out as expected (i. e. it matches my prediction) and it also matches the research I had done previously. It shows us a general pattern of the length of wire and resistance being proportional. Things I could have done better- The experiment could have been done much more accurately. I could have used a more reliable ammeter and voltmeter so readings can be more accurate, they can be more stable and corrected to more decimal places, in this case there will be fewer errors in the graph. We could also have used fewer wires. The wires we use have a very slight resistance, therefore affecting the experiment slightly. Besides all this there is not much else we could have done. The experiment could have turned out better if the equipment used was much more advanced (explained above). However as said earlier the results are good enough to show me a general pattern and allow me to analyse what happens.

The Mafia As A Corporation Essay -- essays papers

The Mafia As A Corporation Violence, blackmail and corruption as business terms, one would doubtfully consider them commonplace, but in the Mafia, nothing is. Looking at the history surrounding the Mafia, and the motivations apparent for its unconventional practices will lead one to realize that it is much more a union aimed at entrepreneurial success than the more common notion that it is simply a malicious group of amoral villains, anxious to wreak havoc. For decades the Italian-American Mafia has employed violent to achieve success in a capitalistic sense. â€Å"The Mafia has changed a great deal since the days of the peasant uprisings in sun-baked Sicily. It has found a place within its ranks for business-school graduates, and it has adopted modern banking methods and invested in legitimate corporate ventures.† The Mafia, also known as La Cosa Nostra, is generally composed of Italians or Italian-Americans that work together as entrepreneurial criminals. La Cosa Nostra literally means â€Å"T he thing ours† but is loosely translated as â€Å"our thing.† The Mafia traces its roots back to Sicily, Italy in the 9th century AD when its purpose was to guard the feudal estates of wealthy landlords. When members of the Sicilian Mafia immigrated to the United States they initially excelled in extortion, but soon adopted gambling and prostitution as business ventures. In order to understand the role the Mafia has played in the United States, it is first necessary to study the formation and role of the Mafia in Italy. The Sicilian Mafia is said to have formed around the ninth century when Arabic tribes invaded Sicily. Native Italians were forced into hiding, taking to the hills and mountains in order to stay safe. The Sicilian Mafia formed to protect Italians from the invaders, and eventually rid the region of its unwelcome foreign foes. At this point, Mafiosi (individual members of the Mafia) essentially became middlemen for business transactions in their particular city or town. In his book The Sicilian Mafia, Diego Gambetta describes the process â€Å"When the butcher comes to me to buy an animal, he knows that I want to cheat him. But I know that he wants to cheat me. Thus we need, say, Peppe [that is, a third party] to make us agree. And we both pay Peppe a percentage of the deal.† This method has many implications. â€Å"Peppe† is trusted by both the con... ...expertise into other fields. With this expansion came the fame and fortune that has made the American Mafia famous in the United States. In time, the Mafia honed their skills, and aligned them with common legitimate businesses practices, which has separated them from common criminals, and allowed themselves to excel. Bibliography 1.)Firoentin, Gianluca and Peltzman, Sam. 1995. The Economics of Organised Crime. The Press Syndicate of the University of Cambridge 2.)Gage, Nicholas. 1971. The Mafia is not an Equal Opportunity Employer. Nicholas Gage 3.)Gambetta, Diego. 1993. The Sicilian Mafia. The president and Fellows of Harvard College. 4.)Mangione, Jerre and Morreale, Ben. 1992. â€Å"Who’s afraid of La Mano Nera, ‘The Black Hand?’† New York, Harper Collins. http://organizedcrime.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.mindspring.com%2F%7Ehistoric-ny%2Fblackhand.htm 5.)Nelli, Humbert S. 1976. The Business of Crime: Italians and Syndicate Crime in the United States. Oxford University Press, Inc. 6.)Pitkin, Thomas M. and Cordasco, Francesco. 1977. The Black Hand: A Chapter in Ethnic Crime. Littlefield, Adams & Co. The Mafia As A Corporation Essay -- essays papers The Mafia As A Corporation Violence, blackmail and corruption as business terms, one would doubtfully consider them commonplace, but in the Mafia, nothing is. Looking at the history surrounding the Mafia, and the motivations apparent for its unconventional practices will lead one to realize that it is much more a union aimed at entrepreneurial success than the more common notion that it is simply a malicious group of amoral villains, anxious to wreak havoc. For decades the Italian-American Mafia has employed violent to achieve success in a capitalistic sense. â€Å"The Mafia has changed a great deal since the days of the peasant uprisings in sun-baked Sicily. It has found a place within its ranks for business-school graduates, and it has adopted modern banking methods and invested in legitimate corporate ventures.† The Mafia, also known as La Cosa Nostra, is generally composed of Italians or Italian-Americans that work together as entrepreneurial criminals. La Cosa Nostra literally means â€Å"T he thing ours† but is loosely translated as â€Å"our thing.† The Mafia traces its roots back to Sicily, Italy in the 9th century AD when its purpose was to guard the feudal estates of wealthy landlords. When members of the Sicilian Mafia immigrated to the United States they initially excelled in extortion, but soon adopted gambling and prostitution as business ventures. In order to understand the role the Mafia has played in the United States, it is first necessary to study the formation and role of the Mafia in Italy. The Sicilian Mafia is said to have formed around the ninth century when Arabic tribes invaded Sicily. Native Italians were forced into hiding, taking to the hills and mountains in order to stay safe. The Sicilian Mafia formed to protect Italians from the invaders, and eventually rid the region of its unwelcome foreign foes. At this point, Mafiosi (individual members of the Mafia) essentially became middlemen for business transactions in their particular city or town. In his book The Sicilian Mafia, Diego Gambetta describes the process â€Å"When the butcher comes to me to buy an animal, he knows that I want to cheat him. But I know that he wants to cheat me. Thus we need, say, Peppe [that is, a third party] to make us agree. And we both pay Peppe a percentage of the deal.† This method has many implications. â€Å"Peppe† is trusted by both the con... ...expertise into other fields. With this expansion came the fame and fortune that has made the American Mafia famous in the United States. In time, the Mafia honed their skills, and aligned them with common legitimate businesses practices, which has separated them from common criminals, and allowed themselves to excel. Bibliography 1.)Firoentin, Gianluca and Peltzman, Sam. 1995. The Economics of Organised Crime. The Press Syndicate of the University of Cambridge 2.)Gage, Nicholas. 1971. The Mafia is not an Equal Opportunity Employer. Nicholas Gage 3.)Gambetta, Diego. 1993. The Sicilian Mafia. The president and Fellows of Harvard College. 4.)Mangione, Jerre and Morreale, Ben. 1992. â€Å"Who’s afraid of La Mano Nera, ‘The Black Hand?’† New York, Harper Collins. http://organizedcrime.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.mindspring.com%2F%7Ehistoric-ny%2Fblackhand.htm 5.)Nelli, Humbert S. 1976. The Business of Crime: Italians and Syndicate Crime in the United States. Oxford University Press, Inc. 6.)Pitkin, Thomas M. and Cordasco, Francesco. 1977. The Black Hand: A Chapter in Ethnic Crime. Littlefield, Adams & Co.

Classroom Community Investigative Paper Essay

Feeling a sense of community is important for almost anyone. Even now, in college, the students in the Elementary Education Program at Utah Valley University are in cohorts. Why? To help us find others who we have common interests with, and who can help us learn and grow into great teachers. Because being in an environment where we feel safe as well as feeling a sense of belonging is important. Developing a classroom community for elementary students is imperative. A student who feels comfortable in the classroom will be able to learn and grow because they will not be afraid to make mistakes in front of others, and they will learn to appreciate the opinions of others. The sooner a child learns to work with and value others, the better. This not only benefits a person during their school years, but is an important part of success later in life. One tool we have learned about this semester to improve classroom community is morning meetings. Though I have not personally seen an elementary classroom morning meeting in action, the evidence of its success that I have seen and heard from our guest speaker, Sylvia Allan, as well as what I have read in our text books and researched online, has convinced me to try morning meetings in my own classroom. Our morning meeting packet states that morning meetings build a classroom community, which may improve student test scores. That is great reason to try them. Earlier in the semester when we were introduced to morning meetings, I was so excited. My goal as a teacher has always been to value every student. I was thrilled to have been given a tool that would do just that. My focus for morning meetings will be to help each child in my classroom realize how important and irreplaceable they are. Morning meetings will help to create an atmosphere of trust, which is essential for optimal student learning. The responsive classroom. org states that morning meetings â€Å"Build community, increase student investment, and improve academic and social skills. † That is exactly what I hope to do with them. Using the morning meeting tool in our own college classroom has been an effective tool for me as a student. Because I transferred from another cohort this semester, I did not know anyone else in our cohort. Participating in morning meeting has given me the opportunity to learn more about the other people in our class. Learning about the similarities I share with these people has allowed me to make connections with some of the students in my class, and has made me feel more comfortable and more willing to participate. I plan to use the morning meeting format as it is presented in the morning meeting packet with a few modifications. The greeting, sharing, group activity, and news and announcements portions are all important for the children to get to know one another and feel comfortable in the classroom. However, I will probably just write the news and announcements on the board and briefly go over it with the class because I plan to be teaching older grades. I would also like to add memorization of a poem each day, as well as a fun saying a la Silvia Allan. I like these ideas because it gives me the opportunity to prove to my principal that morning meetings are not only effective in building a classroom community, they are academic as well. I plan to initiate full morning meetings into my classroom on the first day of school. Because I have not actually used them in an elementary classroom setting yet, I am not sure if I will do every component every day. For example, the greeting may have to be on Mondays only due to time constraints. I also may not do a group activity every day. I may use this time as an opportunity to work on a concept I noticed the entire class had a hard time with. For example, if most of the class had a difficult time learning a math concept the day before, I would have a student with a good understanding of the concept explain it to the class while we are in morning meeting while the positive classroom community juice is flowing. Hopefully, the students who are having a difficult time with the concept will feel less threatened because we are working on the concept during morning meeting time, not math time. So how does a classroom community lead to differentiation in the classroom? Having a classroom where students feel accepted and accepting allows the teacher to be able to make accommodations for students who need it because the rest of the class understands why they need it. One of my favorite â€Å"Hallmarks of a Differentiated Classroom† that describes this in detail is â€Å"shared responsibility for the classroom between teacher and students, in the goal of making it work for everyone†. When students feel comfortable in the classroom and care about their fellow classmates, students are willing to share their strengths with the rest of the class for the betterment of others. They also realize their limits and are willing to strengthen them by learning from other students. A classroom community is a very important part of a successful classroom. It gives students a place where they feel comfortable and are not afraid to make mistakes. Students who feel comfortable in the classroom are more willing to make mistakes and learn from them, thus giving them a better opportunity to achieve their full potential. I am excited to use morning meetings in my classroom to build a successful classroom community.

Essay about Video Game Influence - 1830 Words

Do you play video games? Or maybe your friend, your sibling, your child plays video games? From the earliest games, Pong and Pac-Man, to the most recent games, Star Craft II and Halo Reach, it has been about 40 years. Evolving with our technology, video games originally played on big arcade machines have moved to small consoles we see today, making it available to all those that can afford it. With the wide variety of old and new video games, it has become one of the most popular entertainment in the world, especially with the recent rise of social gaming made available by social website like â€Å"Facebook†, allowing video games to reach a much more broad audience from the very young to the very old. With so many people playing video games,†¦show more content†¦It’s a record that would surpass the standards of expert marksmanship in the military. But Michael is not a marksman, so how does he shoot with such accuracy? He has never held a real gun in his life b efore. So, many people argue that Michael received his â€Å"training† from the violent shooting games that he plays. Lt. Col. David Grossman, a former psychology Professor at U.S Military Academy explains Michael’s behaviors: Michael Carneal†¦ had fired thousands of bullets in the video game â€Å"murder simulators.† His superhuman accuracy, combined with the fact that he â€Å"stood still,† firing two-handed, not wavering far to the left or far to the right in his shooting â€Å"field,† and firing only one shot at each target, are all behaviors that are completely unnatural to either trained or â€Å"native† shooters, behaviors that could only have been learned in a video game†¦. These kind[s] of video games provide the â€Å"motor reflexes† responsible for over 75% of the firing on the modern battlefield. (6) Grossman also argue that US Army and Marine use the same techniques as violent video games to train to train the soldiers for combat, to allow children to play these kind of games is the same as training them like a soldier for combat, to kill or in lesser cases, makes them more violent than the children that does not playing these video games. But is this true?Show MoreRelatedThe Influence Of Video Games On Teenagers3039 Words   |  13 PagesOctober 2014 The Influence of Video Games on Teenagers The long-standing controversial issue of the correlation between aggressive video games and violence committed by adolescents has been debated and researched since the early 1980’s. The video gaming business has become a multi-billion dollar business which has great influence on our society. Due to the financial gains and the technological advances, video games have become more realistic over time. Some current popular video games are so realisticRead MoreViolent Video Games And Its Influence On Behavior1187 Words   |  5 PagesViolent Video Games and Its Influence on Aggressive Behaviors What images pop up in your head when you hear the word aggression? Have you ever thought whether violence portrayed in different forms of media make people more aggressive? The immediate reaction to such a word is fighting or violence. Many issues are determinants of aggression but media violence has played a huge role in influencing aggressive behavior. Over the past years, aggression has been tied to numerous video games thatRead MoreVideo Game Violence And Its Influence On Maladaptive Behavior Essay1934 Words   |  8 PagesVideo Game Violence and Its Influence on Maladaptive Behavior†¨Ã¢â‚¬ ¨ Video Game Violence has been a controversial topic for many years, dating back to even the most simple classic video games like Ms. Pac-Man, Centipede and Space Invaders, eventually pushing into more modern games like Grand Theft Auto V and Call of Duty: Black Ops. This investigation attempts to expand and analyze the idea that due to the historical trend of video game violence being accused of blame for seemingly related violentRead MoreNintendo s Influence On The Video Game Market Essay1840 Words   |  8 Pagesmost successful games in all of video gaming history. Super Mario Brothers; released for the Nintendo NES, became on of the best selling games in the world, and put Nintendo on the map as the â€Å"Grandfather of Modern Video Gaming† (Nintendo, 2016). Nintendo has seen a dozen of its products dominate the market—from the Gameboy to the Wii, the company’s products are iconic and unique to the industry and are easily accessible worldwide. Despite Ninte ndo’s stronghold on the video game market, the companyRead MoreEssay on Positive Influence of Violence in Video Games832 Words   |  4 Pagesâ€Å"Violent video games make kids more violent†. Video games affecting youth is a very debatable topic. Most people just come to that conclusion without acquiring any evidence or reason, but there are some reasons why this is a wrong assumption. I believe that violent video games are actually good for people. They allow them to have an escape from real life which is positive, the violence allows people (young people in particular) to think morally about what they are doing, and most violent games letRead MoreDo Violent Video Games Influence Youth Violence?772 Words   |  3 Pagesof the video games rated yearly. The debate of whether the aggressive nature of these video games influences youth violence in our country has been heatedly battled for decades. Since the mid 1980’s, it has been suggested that high profil e cases of violence are due to an aggressor’s excessive video game use. However, much like a cold case the type of connection between video game use and youth violence remains without a definite answer. Most believe that video game use negatively influences childRead MoreBlame Games: Does Violence in Video Games Influence Players to Commit Mass Shootings?2025 Words   |  9 PagesDoes the famous video game Pac Man influence its players to abuse the use of prescription pills? It may sound ridiculous, but that is how news media specializes in the alteration of false information. By arriving at conclusions without providing accurate research and facts to back it up, news media blames extreme video games for causing violence in our society. They ignore factors such as population, mental health, and home life as they quickly jump to conclusions that violence portrayed throughRead MoreVideo Games Have Become A Real Influence On The Curriculum Of The Modern Entertainment Industry Essay1472 Words   |  6 Pagesdecades, the video game industry has rapidly improved the technology to home gaming. Video games have become a real influence on the curriculum of the modern entertainment industry. Video game campaigns have a very strategized, but hidden way of luring people to buy their product. I believe that the way that they use social influence like Facebook or twitter to spread the word that their new video game is coming. Social influence is a huge way to advertise and seduce the video game obsessed populationRead MoreVideo Games: Their Negative Influence on Childrens1288 Words   |  6 PagesAs a video game and computer game lover, the thought that negative effects ever being present in these enjoyable past time devices never crossed my mind. Over this past summer I was able to spend countless hours improving my skills on different games. I of course made multiple visits to video game stores such as Game Stop and Game Crazy. As I entered one these stores to purchase a new game, I noticed two boys, probably about eight or nine years of age, were playing one of the latest war games on aRead MoreInfluence Of Halo On The Video Game Industry905 Words   |  4 PagesInfluence of Halo on the Video Game Industry Topic: Influence of Halo on the Video Game Industry. Specific Purpose: To give a general overview of the ways Halo has influenced video games. Introduction I. Some priming questions so I know what I’m working with, how many of you have actually sat down to play a video game in the past few years, and how many of you would say you play video games regularly, say once a week at least, and this can be phone apps, consoles, computers, etc. II. I personally