Sunday, October 13, 2019
Simple Voltage and Current Measurement :: essays research papers
Experiment I Simple Voltage and Current Measurement Objective The objective of this experiment was to measure the Voltage and Current. Upon completion of this experiment I was able to: 1)     Set the DC power supply to a specific voltage. 2)     Properly connect the voltmeter to measure voltage. 3)     Measure current with the ammeter. 4)     Measure resistance with the ohmmeter. 5)     Determine the accuracy of a given meter reading. Theory The theory required for this experiment was an understanding of Ohm’s Law. Ohm’s Law is the algebraic relationship between voltage and current for a resistor. Resistance is the capacity of materials to impede the flow of current or electric charge. Ohm’s Law expresses the voltage as a function of the current. It was also necessary that the concept of measurement accuracy be understood. This is discussed below. Accuracy is of primary importance in an experimental work. The tolerance quoted by the meter manufacturer allows us to calculate the accuracy of any reading taken with that particular meter. For example, assume that the dc voltage scale on a particular multimeter is rated at  ± 3% of full scale. This means that a reading on the 10V scale is accurate to ( ± 0.03%)(10) =  ± 0.3V. Thus, a reading of 9V on the10V scale indicates a true voltage, which lies between 8.7 and 9.3 V. A reading of 1V on the scale would indicate a true voltage between 0.7 and 1.3 V. At this point, the error is  ± 30%! Any reading less than 10% of full scale should be viewed with suspicion since most meters are very inaccurate n this range. Circuit Diagrams For this experiment we used a Power supply source, voltmeter/ammeter/ohmmeter. Fig 1.1 Power Supply and voltmeter in parallel Power Supply                    Voltmeter - Fig 1.2 Simple voltage measurement circuit. a                              a b               a          b                    a a d                          c                                   c                              d c                         d      Fig 1.3 Simple current measurement circuit Power Supply (Be sure current                                              I control is at maximum setting)           Fig 1.4 Circuit to measure resistance                               Procedure To measure the voltage output of the power supply, we connected the voltmeter as shown in Fig. 1.1. We made sure that the voltmeter is always connected in parallel with the voltage being measured. Before turning on the power, we set the voltmeter voltage range to a DC value higher than the highest voltage we expected to measure. This precaution must be observed with all meters in order to avoid the possibility of burning out an expensive instrument. We then set the current control to maximum current and adjust the output voltage of the supply to values of 2.5, 10, and 15.
Saturday, October 12, 2019
Set Theory in the Flesh :: Numbers Mathematics Essays
Set Theory in the Flesh The idea of infinity has been around for thousands of years. It it impossible to even conceive of this number or anything that pertains to the infinite. There is always one more. A billion is a fairly large number, 1 with 9 zeros after it. If one counted by seconds without breaks, it would take over 32 years to reach it. A Google, is a number written as 1 with one hundred zeros after it. One couldn't even count the number of lifetimes it would take to count to this number. Yet there are even much higher numbers such as a Googleplex. This number is one with a Google zeros. It would take far far too long to even write out the number. If the entire known universe was packed with quarks, the smallest known material, the number of quarks would not add up to a Googleplex. Compared to infinity, though, this number is as far away as the number one. Set theory is an area of mathematics that deals with inconceivable numbers, and bottomless concepts such as infinity. As it turns out there are many different kinds and orders of Hartmann 2 infinity that were documented by George Cantor, who opened up this area of math for the world. One way of describing these different levels of infinity is with Cantor's theoretical "Hotel Infinity" which is also an Allegory of his work and struggles in set theory. The story is interesting and also explains the fundamentals of infinity. Cantor and his assistant built a wondrous hotel that was made in such a way that there are infinitely many rooms. When he makes this hotel, his enemy Mr. Kronecker, criticizes itsaying that it's impossible and breaks the material of logic and should therefore be destroyed. Kronecker was a real person who criticized Cantor's works from the start trying to get it dismissed as not real mathematics. However, Cantor was able to publish his works, and in the story, his famous hotel was able to be printed in news paper advertisements. When the hotel finally filled up with an infinite number of people, Cantor's assistant didn't know what to do. Finally, Cantor told him to make everyone move from their room to a room that is numbered one higher than the previous one they were in. By doing this, Cantor was able to make room for one more person.
Friday, October 11, 2019
Teenage Smoking
There are many teenage smokers in the Philippines and there are several causes and effects to this issue. Introduction I. Peer Pressure, Curiosity, Habit and Depression are the causes of teenagers that has been smoking cigarette. Based on my experience, Peer Pressure is one of the influential factors to teenage smokers. It occurs when a non-smoker joins a group of teenage smokers. When teenagers have been influenced most likely he or she will start smoking. The behavior and choices in their peer group that can influence others may have a negative impact.And for some reasons, teenage smokes in order not to be bullied and just to fit in with their peer group. According to Better Health Channel ( Feb.. 14, 2013), nowadays, teenagers smoke because Of curiosity. Examples Of their curiosity are media appearances to imitate the actors or models of their behavior or looks, cigarette advertisements and also on what they seen on adults or group of people who smokes cigarette that they become c urious of what cigarettes taste and feels like and why some people are addictive to it.So, curiosity as their question will be answered by trying or experiencing smoking. In this ease, parents lack to teach discipline and to warn their children of the negative effects of smoking cigarettes. So, teenagers are the one who seeks answer for their curiosity. Based on what I've seen to my brother, habit IS also a cause of smoking on teenagers because smoking everyday has already become part of their daily routine, they don't want cigarette but sometimes they need it. As a matter of fact, he smoke every after meal because he say that smoking helps him digest his food.Additionally, many of the teenagers or even adults who smoke minute by minute and they can consume or finish up to two or more cigarette sacks a day. They are already detached to it as their smoking habit that cannot be stop or quit. According to J. Cowlings (2011 Teenage smokes when they are depress due to some problems that they encounter. They smoke cigarettes as their pastime, such as making a round circle in the air and do crazy tricks that makes them relax, calm and relief stress while working.Also, it can help them think clearly when doing a decision making to their own problems. But as a result, in the article of J. Cowlings (2011), researchers said, â€Å"this evidence is consistent with the conclusion that there is a cause and effect relationship teen smoking and depression in which cigarette smoking increases the risk of symptoms of depression. †Therefore, teenage smokers don't know the real effect that it can still cause much more depression to them penthouse they said that it is an antidepressant. II. Effects of Smoking Colonization is one Of the effects Of smoking.Because, this is one Of their way to socialite to the other people. Some smokers usually gathered in one place there called it â€Å"Tambala†in this place there smoke cigarettes together while talking and after the y eat. If they smoke cigarette expect the most of heir friend is smokers because, one does not simply smoke cigarette alone. It's very boring when they smoke alone so to avoid these they find their friends via going to a â€Å"Tambala†to introduce themselves. Cigarette smokers became addicted because of the nicotine that cigarettes contain.According to news at Salaams Doc, one of the ABS-CB shows, that nicotine is the worst compared to marijuana and other drugs because of the long lasting effect. When they inhale the smoke of cigarette one of the chemicals passes thru their body is nicotine, after it spread to the body it attacks the brain and the user feel relaxation and increase of alertness. The worst of this chemical it is hard to remove to the body because of the brain is addicted to nicotine so if the body did not intake a nicotine the brain is craving. That's why they feel like uncomfortable if they don't smoke cigarettes.According to the book Biology concepts and app lication, smoking cigarettes has harmful effects to teenage smokers that can lead to bad health. Because, if they Start to smoke cigarette at early age they are prone to disease and easy to get sick because of their weak immunity due to smoking habit. According to the research teenage smokers are weak when it comes to sports because the lungs cannot function properly. Teenage smokers that start at early years are short people because the development of the body is stop and destroy of this cigarettes.They can die 10-20 years earlier than the non- smokers. Smoking a cigarettes is a very expensive habit. Addicted smokers can't stop a day without cigarette because they said that it is the thing that makes them happy. It's okay for them that they will not eat food just to smoke cigarette because they said that if you are hungry and you smoke you will feel full. According to research if they compute all expenses in buying cigarette over a year, they can buy a new motorcycle or to down pay ment a brand new car.
Thursday, October 10, 2019
How Far Do You Agree with the Opinion That the Boer Was Acted as a Spur to Much Needed Reform in Britain
How far do you agree with the opinion that the Boer war acted as a spur to much needed reform in Britain? The Boer war acted as a catalyst to reform in many ways. It had considerable impact politically and socially. Many changes were put in place, from improving the army to public health care. Initially what acted as a spur was the amount of deaths and the cost of the war, 22,000 were killed costing ? 200 million therefore this led to a wake up call for the Army.However one may argue that it was not just the Boer war that induced reforms to be made in Britain; individuals such as Richard Burton Haldane who was appointed war minister could have implemented changes without the Boer war being a significant factor. The Committee of Imperial defence was set up in 1903 addressing that critical reform was needed in regards to the way Britain defended itself and strategy of planning.This was introduced to learn lesson from the Boer war furthermore Lord Salisbury established the Royal Commiss ions under Lord Elgin, some of the changes that were implemented was the abolition of the post of Commander in Chief, this was highly significant as it allowed other posts to be introduced and the elite class did not buy there way into the Army and posts were given by merit hence allowing more competent individuals to run the Army. Source B shows that inefficiencies of the armed forces and the how important the Esher Report was in reforming it.The source highlighted that there was much needed reform in the army and much of these reforms that were introduced were due to the Boer war, â€Å"it coolly analysed the confusions and ineffectiveness of military administration†considering the provenance I can see that it is from a Book by the historian Corelli Barnett who studied English military history and it was published in 1970 hence implying that Barnett must have collected a wide range of sources over a long period of time and judged them fairly before coming to a rational con clusion.Source A suggests that Britain has had â€Å"an imperial lesson†and will learn from it and will strengthen the Empire. The nature of the source is an extract from a poem by Rudyard Kipling. The provenance could be challenged as it was written by Kipling who was pro Empire, so it may have an exaggerative nature however one may argue that the idea of reform as a result of the Boer war was widespread and accepted at the time, moreover source B which is reliable also accepts the viewpoint.There were huge numbers of men that were deemed unfit for military service; this was made apparent when they led an investigation into why it took so long and why it was so expensive just to defeat 50 000 farmers, from this investigation they saw that they had to make changes hence why the Committee on Physical Deterioration was established; it was set up in 1903 and found that it was not physical deterioration regarding physical health but there was a growing need to improve living, wo rking and education conditions.This produced the need for national efficiency. Many different groups wanted to improve Britains social system by making the Empire efficient and putting more children into Education for longer to allow the spread of social mobility. A meritocracy was also introduced thus allowing individuals to embark of a career based on qualifications and not social class. This could only have been put in place because of the Boer war. Source D evidently shows the need for national efficiency, it shows that 26. % of people were rejected out of 3600 recruits in Sheffield, York and Leeds. â€Å"3 out of 5 volunteers were rejected†this was astonishingly high and highlighted the pressing need to change Britain socially. Free school meals were introduced in 1906 and provision of medical inspections of children. The National Insurance Act of 1911 which provided free medical health for the working class. As a results of the many deaths that occurred in the Second B oer war, new administrative structures were put in place.From acknowledging the fast reactions, skills and talented nature of the Boers, the British needed to put some hard reforms in place. Firstly they removed the traditional bright scarlet uniform for the khaki which allowed a better disguise, new weaponry was introduced such as the Lee Enfield rifle and quick firing guns were produced which were learned from massacres like the one at spion kop. Hence showing that all these changes were due to the learning of mistakes from the Boer war.Source C is an extract from a memorandum from Haldane on military reform published in 1907 this was written by Haldane who was appointed the war minister thus implying that this source is accurate as a war minister would not make exaggerated claims on reforming the military, therefore the provenance of this source is reliable, this source explains the mobilisation of the territorial or home force. However some may say that it was not largely due to the result of the Boer war but because of political changes that were inevitably going to take place.Whenever a new party comes into power is it understandable that they would make important decisions on how to run the country, nevertheless one may argue that the Boer war had an impact on decision making. Furthermore judging from the sources most of them all are in agreement with each other Sources B, C and D are written by reliable people, Historian and politicians were are Source A is a poem written by an individual who is pro empire however there is substantial evidence to support what is written in this poem. Hence why I agree with the view that the second Boer war resulted in much needed reform in Britain.
Wednesday, October 9, 2019
Jahrod
Textbooks vs. Tablets Jahrod Meyers Central Carolina Technical College Topic:Should tablets replace textbooks in K-12 schools? Specific Purpose:Explaining the advantages and the disadvantages Thesis Statement:Publishing for the K-12 school market is an $8 billion industry, with three companies – McGraw-Hill, Pearson, and Houghton Mifflin Harcourt – capturing about 85% of this market. Tablets are a $35 billion industry with roughly one in three adults owning a tablet. As tablets have become more prevalent, a new debate has formed over whether K-12 school districts should switch from print textbooks to digital textbooks on tablets.Introduction A 4GB tablet filled with 3,500 e-books weighs a billionth of a billionth of a gram more than if it were empty of data – a difference that is approximately the same weight as a molecule of DNA. The same number of physical books would weigh about two tons. In San Francisco, New York, and Los Angeles, robberies related to intern et-enabled handheld devices (including tablets) have accounted for 50, 40, and 25 percent respectively of all robberies in 2012. Manufacturing one tablet requires the extraction of 33 pounds of minerals, 79 gallons of water, and 100 kilowatt hours of fossil fuels resulting in 66 pounds of carbon dioxide.Students who used an interactive, digital version of an Algebra 1 textbook for Apple's iPad in California's Riverside Unified School District in 2012 scored 20 percent higher on standardized tests vs. students who learned with print textbooks. During the 2011-12 school year more than 13,700 US children, aged 5 to 18, were treated in hospitals and doctors' offices for backpack-related injuries such as contusions, sprains, fractures, and strains to the back and shoulders. Transition:getting into the pros and cons. Body I. PRO Tablet a. Tablets help students learn more material faster. b.Tablets can hold hundreds of textbooks on one device, plus homework, quizzes, and other files, elimi nating the need for physical storage of books and classroom materials. c. E-textbooks on tablets cost on average 50-60% less than print textbooks. d. Tablets help students better prepare for a world immersed in technology. II. CON Tablet a. Tablets have too many distractions for classroom use. b. Many students do not have sufficient home internet bandwidth to use tablets. c. The average battery life of a tablet is 7. 26 hours, shorter than the length of a school day. d. Tablets shift the focus of learning from the teacher to the technology. * Transition:In closing, â€Å"Computers are getting smarter all the time. Scientists tell us that soon they will be able to talk to us. (And by ‘they’, I mean ‘computers’. I doubt scientists will ever be able to talk to us. )†Dave Barry. Conclusion I. Opponents of tablets say that they are expensive, too distracting for students, easy to break, and costly/time-consuming to fix. They say that tablets contribute t o eyestrain, headaches, and blurred vision, increase the excuses available for students not doing their homework, require costly Wi-Fi networks, and become quickly outdated as new technologies are released.II. Proponents of tablets say that they are supported by most teachers and students, are much lighter than print textbooks, and improve standardized test scores. They say that tablets can hold hundreds of textbooks, save the environment by lowering the amount of printing, increase student interactivity and creativity, and that digital textbooks are cheaper than print textbooks. III. 43% of Americans read online books, magazines, or newspapers. Amazon announced in July 2010 that e-books were outselling paper books, and a July 2012 report by the Association of American Publishers showed that e-book revenue IV. xceeded that of hardcover books for the first time ever. 80% of publishers now produce e-books. While e-books sales rose 117% from 2010 to 2011, the print book business declin ed 2. 5% in 2011 to $27. 2 billion from $27. 9 billion in 2010. However, over 90% of educational textbooks are still read on paper, and only 30% of textbook titles are available electronically. V. I feel that transfer to tablets isn't a bad idea. Considering you will only have to keep up with the tablet and not 5-6 different books for one class. It will also help the children in K-12 to learn and soon master technology
Tuesday, October 8, 2019
Economics of the U.A.E Essay Example | Topics and Well Written Essays - 2000 words
Economics of the U.A.E - Essay Example A regional trade bloc with important economic objectives including the eventual establishment of a common currency, the Gulf Cooperation Council is a regional actor in the Middle East with increasing political leverage and diplomatic sway. Initially created to further the economic integration of Bahrain, Qatar, Kuwait, Oman, Saudi Arabia and the United Arab Emirates, the Gulf Cooperation Council fosters a sense of Arab community within the Gulf context and represents Arab multilateralism in the region. This analysis aims to be in-depth and comprehensive and will conclude with a concise analysis of the means through which the Gulf Cooperation Council will help the economic development of the UAE in the next 15 years and discuss important regional issues including the dream of a unified currency for the Arab states of the Persian Gulf region. A regional trade bloc which includes some of the fastest growing economies in the world, the Gulf Cooperation Council was devised and implemented in 1981 under the auspices of a unified economic agreement which established a unique social and economic bond between the Arab countries of the Persian Gulf region. The current six members of the GCC, Bahrain, Qatar, Kuwait, Oman, Saudi Arabia and the United Arab Emirates, were the original parties to the document creating the GCC and although expansion of this regional body may occur in the future, the membership of the GCC has remained unchanged for more than twenty seven years. During these years, the region has witnessed incredible growth, rising gross national product throughout the region and an undeniable boom in natural resources including oil and natural gas. The Gulf Cooperation Council was established as a multilateral organization almost thirty years ago with the intent of fostering economic and social integration among the Arab countries of the Gulf region.
Monday, October 7, 2019
The chassis of a typical motorcycle Essay Example | Topics and Well Written Essays - 2500 words
The chassis of a typical motorcycle - Essay Example dy components are made from cast-able aluminum, we will discuss here, the characteristics for aluminum casting with reference to its various grades, as this is the best non-ferrous casting alloy and Accordingly, the proper aluminum grade is to be selected, depending on the type of casting. In most of the cases, â€Å"Twin Spar†type aluminum is used for the manufacture of a motorbike frame. The further techniques and processes for the manufacture of this chassis involve welding, tube manipulation and profiling, sheet metal work and Jigging, tooling. These are described here in brief This process is involved when the product turnover is huge .As indicated above, the sand casting or die-casting techniques are used for the manufacture of a motorbike chassis. However die-casting is the technique mostly used for the aluminum chassis manufacture. The process can be either hot chamber or cold chamber die casting methods. The molds involved are required to be quality tested frequently due to their high ware and tear. Various casting processes have their respective advantages and limitations. Some of them are detailed below Apart from the nonferrous metals like aluminum, which are used for die-casting to manufacture the motorbike chassis, other non-metal materials are used currently. These include high resistance and strong polymer based compounds that may need a different casting procedure. The road-going version of Norton featherbed frame was manufactured using electric arc welding process only. However, the technology has advance a lot since then and it is now found that electric arc welding may not be suitable for the chassis building as the requirement of the tubing wall thickness here is more than 2mm, which makes the material expensive. This is also called CO2 gas welding. The weld material is in the form aof a wire or electrode and the gas fed as a shroud is the mixture of carbon dioxide and argon. While, the process is used mostly for steel tubing and other
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