Watergate and American Foreign Policy free essay sample

An analysis of how American foreign policy caused and was affected by the Watergate scandal. This paper examines the Watergate break-in scandal in 1972. The author discusses the political motive behind the act, the figures involved in the scandal, and attempts to understand why President Nixon would authorize the illegal act and jeopardize his future. The cause of the Watergate scandal lays in the split between the containment and new world order factions within the Nixon administration. Through 1972, Richard Nixons presidency had been a successful one. He had begun to remove the United States from Vietnam , opened relations to China , achieved detente with the Soviets, and brought the allies back under tighter control through higher energy prices, all of which helped strengthen containment. Henry Kissinger and the other members of the Rockefeller establishment needed to find some way to gain leverage over Nixon in order to promote their new world order agenda. We will write a custom essay sample on Watergate and American Foreign Policy or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Watergate would become their tool for wresting power from Nixon and changing the grand strategy of American foreign policy.

Jefferson on Slavery essays

Jefferson on Slavery essays Thomas Jefferson was born on April 13, 1743 in Albermarle County, Virginia, inheriting from his father, some 5,000 acres of land, and from his mother, a Randolph, high social standing. He attended the College of William and Mary where he studied law. In 1772 he married Martha Wayles Skelton, and took her to live in his partly constructed mountaintop home, Monticello. Jefferson achieved several accomplishments throughout his lifetime. At age 33, he drafted the Declaration of Independence. In years following, he labored to make its words a reality in Virginia. Most notably, he wrote a bill establishing religious freedom, enacted in 1786. He succeeded Benjamin Franklin as minister to France in 1785. As a reluctant candidate for President in 1796, Jefferson came within three votes of election. Through a flaw in the Constitution, he became Vice President. In 1801 Jefferson assumed the Presidency. Once in office, he slashed Army and Navy expenditures, cut the budget, eliminated the tax on whiskey, yet reduced the national debt by a third. He also sent a naval squadron to fight the Barbary pirates, who were harassing American commerce in the Mediterranean. Further, although the Constitution made no provision for the acquisition of new land, Jefferson suppressed his doubts over constitutionality when he had the opportunity to acquire the Louisiana Territory from Napoleon in 1803. During Jefferson's second term, he was increasingly preoccupied with keeping the Nation from involvement in the Napoleonic wars, though both England and France interfered with the neutral rights of American merchantmen. Jefferson's attempted solution, an embargo upon American shipping, worked poorly and was very unpopular. When Jefferson was born in 1743, slavery had existed in Virginia for nearly 75 years. He grew up on a plantation with enslaved workers, and as an adult, owned nearly 200 slaves. Jeffersons views on slavery and blacks are co...

The Beveridge Approach versus The Workfare Approach Essay

The Beveridge Approach versus The Workfare Approach - Essay Example Nevertheless, it is cautioned that matters are not that straightforward. Often left-wingers favour practices that disable institutional support that may affect their broader ideology and there are right-wingers who may favour it as it positively affects their broader policies. This is only a particular instance. (An Introduction to Social Policy, Undated). In November, 1942, Sir William Beveridge presented his report entitled "Social Insurance and Allied Services" to His Majesty the King. In it he mentioned that there were three guiding principles that he had used to formulate his policy of public social service. These are as follows. Sir Beveridge asserted that any experiences gleaned in the past must be used to build opportunities to the future. Such experience should not be restricted on the basis of any sectional interests vested in its gathering. He personally remarked of this - "A revolutionary moment in the world's history is a time for revolutions, not for patching." (The Beveridge Report, 1942) The second principle cautioned that the organisation of social insurance should be treated as only a part of overall social progress. This was so because social insurance aimed at negating all want in the British people. Sir Beveridge cautioned that 'want' was only one aspect of the reconstruction that was then necessary to put the British Empire back on its feet after the war. The other four were - disease, ignorance, squalor and idleness. Then third principle was that social security w3as to be achieved by co-operation between state and individual. The state would offer security for service and contribution. It would organise security but not stifle incentive, opportunity and responsibility. It would establish a national minimum but it would leave room and encourage voluntary action by an individual to procure more than that minimum for himself and his family. (The Beveridge Report, 1942)New Labour's Welfare Policy When the 'New Labour' Party came to power in Britain in May, 1997, it did so with a considerably changed economic manifesto from its previous stint which immediately preceded its re-election. Under Tony Blair, the new labour economic policy was strongly oriented towards the supply side and the welfare state was intended to exist on the basis of steady employment provided by the pull of demand. All these changed policies were meant to

Biochemistry - How BSE Occurs at a Molecular Level Coursework

Biochemistry - How BSE Occurs at a Molecular Level - Coursework Example Toxicity: Large amounts of phenylalanine taken in the form of nutritional supplements elevate blood pressure. Symptoms such as headaches, heartburn and nausea may be experienced. In addition, the nervous system is usually affected by the toxicity of phenylalanine. Reactivity: Phenylalanine is a hydrophobic amino acid with an aromatic side chain. Therefore, it is fairly unreactive and mostly takes place in substitution reactions where it is interchanged with amino acids of a similar nature. Consequently, it plays a key role in substrate recognition rather than in protein function. Hydrogen bonds: Hydrogen atoms from the amine groups are pulled towards the electronegative carboxyl groups leading to sharing of electrons. The repetitive nature of such attractions within the protein structure confers stability. Van der Waals forces: Interactions among induced dipoles that form from the changes in charge density that occur in adjacent atoms that do not necessarily form a bond constitute attractive van der Waals forces. Repulsive forces, on the other hand, entail interactions between atoms that come close to each other but do not form dipoles. The huge numbers of such forces within the structure of proteins affect the stability of proteins. When certain proteins fail to fold in the required way, they begin to cluster and form aggregates. These aggregates contain certain polymeric structures such as beta sheets. In BSE, these aggregates are in the form of prions, which get into the brain and cause disease. Prions are proteinaceous infectious particles that comprise aggregates of misfolded proteins. Prions alter the structure of the brain by stimulating the formation of ‘holes’ in the brain, which ultimately give the brain a spongy architecture. Consequently, the nervous system is affected making the cow behave abnormally.  Ingestion of prions present in contaminated food causes them to be taken up into the body.  Ã‚  

The Clash of Civilizations and the Remaking of World Order Essay

The Clash of Civilizations and the Remaking of World Order - Essay Example He avers that the secular ideologies are facing a new, serious threat of violence. The origin of this hidden volcano is between countries and cultures that base their traditions on religious faith and dogma. These limited numbers of cultures have taken the center stage to influence and dominate the important events that have serious bearings. They are Western, Eastern Orthodox, Latin American, Islamic, Japanese, Chinese, Hindu and African. Huntington argues, policymakers should take notice of this development, while trying to interfere in the internal affairs of another country. Rebuking U.S. in this regard Huntington says, â€Å"In the emerging world of ethnic conflict and civilizational clash, Western belief in the universality of Western culture suffers three problems: it is false; it is immoral; and it is dangerous . . . Imperialism is the necessary logical consequence of universalism.†(Huntington, 1998, p.310) What is the latent psychology of these cultural civilization groups that are part of a Nation? Is this civilization identity conflict-oriented or friendship-oriented? Are they wiling to live in mutual co-operation or with hidden grudges? Is living together as democratic citizens of one country are an act of compulsion? â€Å"For the first time in history global politics is both multipolar and multicivilizational; modernization is distinct from Westernization and is producing neither a universal civilization in any meaningful sense nor the Westernization of non-Western societies.† (p.20) The valley of these civilizations as perceived by Huntington is not all green! His forthright views merit serious consideration, in the light of what actually is happening all over the world, especially in Muslim countries, and the countries suffering from Muslim factor. According to him modernization does not mean westernization. Economic progress clubbed with revival of religion is a dangero us combination. The

The New Hydraulic System Engineering Essay

The New Hydraulic System Engineering Essay The major aim of the project is to investigate about the new hydraulic system of a380 and the reasons for increasing the hydraulic pressure from 3,000 psi to 5, 000 psi. The project is also intended at discussing and investigating about the new electro- hydrostatic actuators which uses this high hydraulic pressure. This report emphasiss on how this hydraulic system with 5,000 psi works and how it is better than previous hydraulic system. Saving Weight is the major reason for using 5000 psi hydraulic system in a380. By using higher pressure and smaller volume of fluid though the pipe of smaller radius, saves tonne of weight throughout the aircraft. Earlier used in military aircraft, this 5000 psi hydraulic system helps to reduce overall weight of the aircraft by reducing size of pipelines and other components. Fig.1 Kevlar hydraulic hoses, used for carrying high hydraulic pressure in A380. (eaton, 2006) Architecture of a380 hydraulic system differs extremely from other aircrafts, it uses pipeline specifically made of titanium and eight de- clutchable hydraulic pumps being used to achieve this high pressure of 350 bars. Also hydraulic power packs serve as backup for primary systems, instead of secondary hydraulic system which reduces maintenance and save weight. The very obvious reason that come to mind for using an enormous 5000 pounds per square inch seems to be the fact that there is need of massive power needed to fly the giant A380. But there is a lot more to it. The technical reason for that is the weight saving that the designers envisaged. In conjunction to the principles of physics, the pipelines of the hydraulic system have been designed to a smaller diameter as opposed to those used in other wide bodied aircraft, like B 777 in close enough range of A 380. As we know Force = A * P Where A is the cross section area and P is the pressure exerted by the hydraulic fluid Smaller diameter of pipelines enables greater hydraulic pressure to be exerted. Thus apart from giving enough power to drive the controls, it also provides the adequacy for lightweight components though they needed to be stronger. So this reduces overall weight of the aircraft. The way A380s hydraulic system is designed is completely different from those of others. The fact that its piping system is specifically made of titanium. Eight hydraulic pumps that are clutch able add to the extraordinary feature of this beautiful machine. Also, power packs that are driven hydraulically provide back up for the main hydraulic system. His eliminates the need for a secondary system that is normally implemented for redundancy. Here we see an intelligent application of a really appreciable weight reducing technique. This not only saves weight of the aircraft, but also takes a leap across in the world of engineering, in aircraft manufacturing and provides a base for producing aircrafts with such excellent duplicity in designing power store for possibly bigger aircrafts. Assuming the A 380 was made with the conventional 3000 psi, it is logical to say that the overall size of the now a380 would have been much bigger. As the experts say, an A380 with a working pressure of 3000 psi would have a nominal diameter of more than 3 inches as opposed to nearly 2 inches which is the actual. The reason as discussed before is the bigger size of the hydraulic components and the pipelines. This in turn would have demanded bigger housings and heavier mountings for a robust structure. Moreover the fittings that join these components would obviously be proportionally bigger and thus adding to weight of the aircraft. All this idea of weight saving methods has been targeted to the profits that the air carriers would yield in the long run. It translates to having bigger payload capacity that generates more revenue for the business involved. The hydraulic pump is located on the engine gearbox that runs on the mechanical power provided by the engine and turns it into hydraulic power. This hydraulic force of the fluid is exerted to the flight control surfaces like the rudders, ailerons, flaps, elevators. Transformation of the hydraulic energy into mechanical energy is felicitated by electro hydraulic actuators, which is another key feature in the making of A 380. These electro hydraulic actuators are driven through electrical power available from the aircraft generator or the TRUs (transformer rectifier units). They have got electro hydraulic static valves. Figures reveal the advantageous design better. As we know from the mathematical relation, Power = C * P Where C is the volumetric flow rate and P is the pressure exerted. A constant power output would imply change in either of the quantities, i.e. force or pressure. Therefore an increase in pressure would lead to reduction in the rate of flow of the fluid, which is about 40% in A380s case. Consequently, the flow rate in the 5000 psi system is about 42 gallons per minute which in a hypothetical 3000 psi system would have been 70 gallons per minute. So clearly we see a remarkable difference in the amount of fluid flowing per unit time in this instance. But considering the size of A380, this would not have been feasible like it is in case of other aircraft, or even for that matter the jumbo jet B747. Airbus successfully achieved an appreciable 20% reduction in the weight by switching to more pressure and lower flow rate that very well suited to a system that involve figures about masses and quantities, precisely 2500 pounds of weight. But, the only drawback for using this 5000 psi is that the components are not available easily. Invention of hydraulic power generation system Apart from the aviation industry, there are not many  industries  that put emphasis on ways of weight reduction. In an industry of commercial aviation,where  the sole source of profits are the flying machines. To make that happen effectively efficiently and economically, there is constant research and development going on throughout the world to develop new technologies and devise new methods of advancement in the field. Every ounce of weight of the mass of the aircraft  would  imply an extra amount of fuel to be consumed. Thus in an effort to reduce the weight and amplify the power to mass em and ultimately increase profits, Airbus endeavoured to save weight of A380.   A hydraulic system with an operating pressure of nearly 5000 psi is not the latest trend though. Since 1970s, military  aircraft  of sophisticated kind have been using such a mean pressure, but with the advent of the giant beauty, it is the first time that such high a pressure has  been  used in passenger aircraft, against the  conventional  3000 psi hydraulic systems, obviously with the exception of Concorde which featured a 4000 psi system. Components that are used in such military air machines need to be light weight as well as strong enough to handle such fluid  conditions. Similar requirements were demanded by the  design  of A380.   When the bright idea of building the worlds largest commercial carrier  was still on paper, Airbus did know that weight and volume of the structural parts and components involved would be the most critical factor in practical. Engineers and designers pondered upon the expertise that would go into it and discussed the latest hydraulic system technologies. These co-ordinated efforts led to a plateau phase that lasted four months, in which the criteria and the specifications of the components and materials involved were developed. The outcome was that the trade of fuel distribution  system  and the hydraulic power generation system was ultimately given to Eaton Corporation.   A380 HYDRAULIC SYSTEM BLOCK DIAGRAM As compared to other airbus hydraulic system, this A380 got only two hydraulic systems i.e. green and yellow, replacing the third hydraulic system by electro- hydraulic system which comprises of EHA and EBHA. fig.2 block diagram (eaton, 2006) A380 HYDRAULIC AND ELECTRIC POWER SOURCES fig.3 hydraulic sources (tron, 2007) electro hydrostatic actuators fig.4 electro hydrostatic actuators (tron, 2007) EHAs are electrically operated actuators, which replaces the third hydraulic system in an aircraft, thus it simplifies the aircraft architecture and makes it more reliable. It has an advantage of storing the pressure internally, when there is no movement in the motor, thus it reduces the power usage. WORKING AND CONSTRUCTION OF THE SYSTEM   It is the first time in the civil aviation history that flight actuators are incorporated that are powered solely by electricity that give back up to the  hydraulic  powered flight control actuators. When required they augment the primary  actuator. They contain their own hydraulic  and electrical supplies.   For aileron and elevator  movement  EHAs or Electro- hydrostatic actuators are used. For rudder and spoilers movement they are used as EBHAs Electrical back up hydrostatic actuators.   As the pressure has increase from 210 bar (3000 psi) to 350 bar (5000 psi), this has led to thinner pipelines being used. The conventional metal to metal fittings have been replaced by isomeric sealing which bind the metal chemically. Tests have proved that such high pressure would not degrade any chemical or physical property of the fluid, with an added advantage of saving about a metric ton! Hydraulic system of A3809 consists of eight Vickers PV-300-31 hydraulic pumps that are engine driven and are of variable displacement type that have a displacement that deliver at a  rate of 42 gallons per minute at 3775 revolutions per minute. Their displacement is  47 ml per revolution There are two unique features that set this kind of pump apart from traditional type of hydraulic pumps. Firstly, the disengagement clutch that is not found on any of the other commercial or military aircraft. For instance, if any of the eight pumps is not working, it can be de clutched or separated from the system. Then the pump cannot be engaged, with the exception on ground that too by manual means. The second important characteristic of this kind of pump is pressure pulsation. Generally, there are pressure fluctuations n a pump, typically about 10%.] I.e. The value of the pressures generated can vary to about 10% above and below of the nominated value. Even in recent models, this pulsation is about 5%. But Airbus wanted the value to be as low as 1%. These results were immaculate. It led to a system which had variations to a maximum of 4900 psi and 5100 psi on both sides. Low noise levels were an added advantage.   Another important Development with the upcoming of A380 is that they have incorporated four 150 kVa electrical generators which can be frequency controlled. Thus eliminating the use of constant speed drives (CSDs) and better reliability.  Embedded in the same electrical system are the new aluminium power cables that have replaced copper. Thus saving on weight for an aircraft that requires numerous cables running in it for such complex systems.  This power system of the A380 is fully digital and computerised. So the contractors and the breakers have been replaced by solid state devices for better performance. Extending discussion about the electrical power system of A380, it would be logical to mention the illumination system. The lighting is provided by the LEDs which have replaced conventional bulbs. These multi spectral LEDs are capable of producing day like effects anytime and producing shades of variable candela and contrast.   Fig5 components operating the hydraulic system (eaton, 2006) GROUND SERVICE PANEL: According to the fig.2, ground service panel is located at the foremost part of the aircraft in the hydraulic bay and is used for monitoring and maintaining the hydraulic system. Basically it consists of pressure and level gauges, to keep a check over the fluid levels and air pressurization. Fig.6 ground service panel (eaton, 2006) ENGINE DRIVEN PUMP: The main source of supplying 5000 psi is EDP, there are total eight Vickers branded engine driven pumps being installed on the airbus a380 and each being powered by the gear box, supplying the rate of flow of 160 l/min (42 gpm) at 3775 rpm.These pumps are based on clutch mechanism which enables them to disconnect from the engine gear box as required on flight or on ground. Fig.7 engine driven pump (EDP) (eaton, 2006) FIRE SHUT OFF VALVE: Four fire shut off valves being fitted in A380, in order to shut the hydraulic lines in case of major incidents or engine failure. The unit consist of an electrical motor, which has been designed specially for low electrical consumption, saving notable weight of the aircraft cables. Fig.8 fire shut off valve (eaton, 2006) SLAT DRIVE SYSTEM: This system consists of a hydraulic motor, sensors and brake release mechanism, where motor is bi- directional with variable displacement in nature and sensors are based on closed loop motor control mechanism. it is the first commercial aircraft, which uses this variable displacement motors to operate the secondary flight controls. Fig.9 hydraulic motor (eaton, 2006) HIGH PRESSURE MAINTENANCE FREE ACCUMULATOR: These accumulators are mostly used for maintaining the brake system of the jumbo jet during parking mode and also used as backup for emergency braking. They are charged with helium and can only operate with high pressure hydraulic fluid i.e. 5000 psi. Fig.10 high pressure accumulator (eaton, 2006) HYDRAULIC SLIDING UNIONS: These sliding unions are used for distribution of hydraulic power to different sections of aircraft such as rudder, elevators, landing gear etc. They are used for supporting pipe length during contraction and expansion, due to thermal changes and significant wing deflection. As shown in fig.2, they are located at rear spar area of the wings. Fig.11 hydraulic sliding unions (eaton, 2006) Highlights of new hydraulic system C:Usersswatinw sngsPictures380 10.jpg Fig.12 highlights of new system (bugatti) Electro hydrostatic actuators (EHAs)   These are for back up flight controls and are driven by mini pumps which are smaller that conventional pumps  but capable of delivering fluid at 5000 psi. Massive size of a380, brings out a new approach to its flight control system, moving these large surfaces hydraulically being proposed but later replaced by the new hydraulic plus electric architecture known as electro hydrostatic actuators. http://www.messier-bugatti.com/IMG/jpg/hmp0033n.jpg fig.13 mini pumps (bugatti) Hydraulic filtration and distribution   Its components are made of titanium so it can bear high pressures, being stronger and lighter in weight at the same time. Steering system To impart great manoeuvrability to the aircraft, Messier Buggati developed variable architectures to enhance the same. for example,   the nose wheel was managed by a software  Ã‚  IMA ( Integrated Modular Avionics) and a backup circuit of the type LEHGS (local electric hydraulic generation system) to support the main circuit for the nose wheel. The two rear wheels on each of the two central bogies are controlled by RDC (remote data concentrators) along with IMA. http://www.messier-bugatti.com/IMG/jpg/hs0013nblocorient_ra_a380-230-2.jpg fig.14 A380 steering system (bugatti) An application of the same is WABSIC  that  stands for  wheel and braking system integrated components  , it has two functions.one is to ensure the rotational speed of the tyre, other is to monitor the tire pressure through wireless data transmission. Moreover a brake cooling fan is part of this integrated unit. The same manufacturer Messier Buggati is responsible for the brake temperature monitoring system and oleo pressure monitoring system on the A380   Braking control system This is controlled by two main circuits fed by two hydraulic circuits, both operating at 5000 psi and monitored by the IMA software. The alternate system which uses de centralised  hydraulic system is also a full brake by wire system which is controlled by an analogue computer and has an emergency baking control unit (EBCU). landing gear hydraulic system As everyone knows that the world biggest airliner a380, has gained much of media headlines for building the jumbo jet with the hydraulic pressure of 5000 psi and they uses this pressure for operating their landing gear systems, which was a big challenge to work on. Maximum take-off weight of a380 is 560 tonnes, out of which 20 tonnes is only of gear itself. Landing gear retraction and extension system is the major element, which manages the landing gear of a380 having total of 22 wheels with 5000 psi. LGERS also introduces the new electromechanical uplocks, which are used for locking and the unlocking undercarriage bay doors and landing gears. These up locks can be used in normal mode as well as in emergency mode, but because of its weight they being replaced by the electromechanical actuators which are far more Compaq and cheaper as it eliminates the use of cable riggings which saves weight and cost as well. There are total 12 up locks being installed on a380, which are easy to maintain as it removes the need of bleed hydraulic system.

What is the Bubonic Plague? :: essays research papers

What is the Bubonic Plague?   Ã‚  Ã‚  Ã‚  Ã‚  The Bubonic Plague is a disease that is caused by a germ called Yersinia pestis. It is spread to humans by fleas from infected rodents. In the 1300s, fourth of the population of Europe was destroyed. The disease causes swelling of the lymph glands (up to the size of a hens egg). The Greek word for groin is boubon, which is bubonic. The number of reported human cases of this plague in the United States has increased since the 1960s because the environment isn't staying clean.   Ã‚  Ã‚  Ã‚  Ã‚  How do you get this disease? When a rat is infected, the flea bites the rat then the flea gets infected. The disease fills the stomach of the flea making it so the flea can't digest any more blood. The flea then becomes so hungry that it bites the human. Now the human is infected. The first symptoms are headaches, nausea, vomiting and aching joints. Some others are fever, chills, the most horrible: the skin turns black.   Ã‚  Ã‚  Ã‚  Ã‚  In the 1300s the plague spread so quickly in cities for many reasons. There were no regular garbage pick-ups. They let their food become rotten and kept them in their homes for weeks. Left over meals were thrown onto the ground for animals, also feeding rats and fleas. They had no running water, so bathing was every once in a while.   Ã‚  Ã‚  Ã‚  Ã‚  Galen's theory was that the disease was spread by poisonous vapors coming from swamps which corrupted the air. Heat was also believed to be a cause of the disease. People washed their feet and hands regularly but, not their bodies because this would open pores, another way for the disease to enter the body. Three Major Outbreaks   Ã‚  Ã‚  Ã‚  Ã‚  The first plague was the Plague of Justinian. The plague followed trade routes to France and Italy. It killed 70,000 people. It killed 1,000 people weekly. Smaller out breaks occurred up until 1340.   Ã‚  Ã‚  Ã‚  Ã‚  The second major outbreak was the Bubonic Plague. It was the most devastating. It occurred in Europe in 1346-50. The Bubonic Plague is also known as the Black Death. It began in Kaffa, a cathedral town on the Crimean Coast. By the end of 1348, the plague covered all of Italy and most of France. By 1351, the Plague reached Russia.   Ã‚  Ã‚  Ã‚  Ã‚  The third major outbreak was the Great Plague of London, in 1665 which killed 17,440 people out of the total population of 93,000. A fire burned most of the city and ended the outbreak. Human Cases   Ã‚  Ã‚  Ã‚  Ã‚  There have been cases of Bubonic Plague throughout the United States.

Physics Ia

Investigating Newton’s 2nd Law of Motion using an Air-track Introduction: My experiment is investigating the Newton’s 2nd law of motion by using an Air-track. The air-track can make the trolley frictionless by testing the velocity with different weights and shows that F=ma. Research question: How much acceleration does the frictionless trolley has? Aim: Use the air track to measure the acceleration of the no friction trolley by hanging with different mass of weights. Apparatus: * 1 air track * Weights (40g, 50g, 60g, 70g, 80g, 90g, 100g) * 1 string (bigger than 200cm) (plastic) 1 frictionless trolley (160g) * 1 pair of scissors * 2 sensors * 2 clamps * 1 ruler * 2 light gates * 1 Pulley * 1 data logger Variables: Independent: the mass pulls down the frictionless trolley. Dependent: the time taken when the frictionless trolley travel through two light gates. Fix: the distance of the light gates and the height of the light gates. Uncertainties: The strength of the plastic string after pulling a lot of weights. Procedure: 1. Put two light gates 50 cm between each other, the lights gates hanging by the clamps. 2.Hang the string one side to the frictionless trolley and another side on the hook which for hanging the weights. 3. Put the string on the wheel. 4. Put the frictionless trolley on the air-track at the distance of 170 cm. 5. Hang 40 g weights on the hook. 6. The frictionless trolley move forwards by the weights. The light gates will automatically recording the speed of the trolley takes and record down the data on the data logger. 7. Repeat the lab 5 times and do with other weights 50g, 60g, 70g, 80g, 90g, 100g as the same procedure. Diagram: Out line (not to scale): How the air track works:Air track is a device use for study motion in low friction environment. The air pump out of the small holes on the track and that allows the trolley got lifted and frictionless. Data Table: Conclusion The newton’s second law is the rate of change of m omentum of a body is directly proportional to the unbalanced force acting on the body and takes place in same direction. It’s according to my lab that the trolley is moving in one direction. Also the graph shows the a curve which shows the change of momentum is directly proportional to the unbalanced force olley. acting on the t

Millers Crossing essays

Miller's Crossing essays In the opening sequence of Millers Crossing, Johnny argues that he has every right to kill Bernie Bernbaum, a fellow bookie who Johnny claims is selling information about fixed fights to outside sources. Johnny discusses his reasoning behind his wish to kill Bernie with Leo, another crime leader who somehow holds a power over Johnny. Johnny begins by stating that he is going to talk about friendship, character, and ethics. He goes on to describe how he sometimes cheats by fixing a fight-but maintains that Bernie goes a step further by selling the inside information to outside sources, and is making a profit off of it. The fact that Bernie betrays him, and that in addition is making money off of it, angers Johnny because he believes that it consequently leaves him in the jungle-or in other words, that it reduces him to a normal civilian level. As the master of his domain, the lead of his own crime agenda, Johnny is not used to this feeling of being among the people that bet on chance, and he does not want to be at this level. He is used to getting his own way and winning, and thus is searching for any scapegoat to crucify as the cause of all his misfortune. Johnny declares two pieces of evidence to back up his accusations; first, that out of town money comes pouring in as bets for the fights, and two, that the odds of the fixed fights go straight to hell. As the opening confrontation between he and Leo progresses, Johnny continues in his angered reproach of Bernie and gets more and more animated as he tries to convince Leo to arrange the killing. Leo denies the reasoning behind Johnnys wish, and Johnny is in turn frustrated at Leo. Evidently, Leo and Johnny are leaders of separate crime rings, and Leos ring is currently on top. Leos blas demeanor only eggs Johnny on more, as he bellows that he doesnt need to listen to Leo, and storms out of the room, becaus...

Charles Law Example Problem

Charles Law Example Problem Charles law is a special case of the ideal gas law in which the pressure of a gas is constant. Charles law states that volume is proportional to the absolute temperature of a gas at constant pressure. Doubling the temperature of gas doubles its volume, so long as the pressure and quantity of the gas are unchanged.  This example problem shows how to use Charles law to solve a gas law problem. Charles Law Example Problem A 600 mL sample of nitrogen is heated from 27  °C to 77  °C at constant pressure. What is the final volume?Solution: The first step to solving gas law problems should be converting all temperatures to absolute temperatures. In other words, if the temperature is given in Celsius or Fahrenheit, convert it to Kelvin. This is the most common place mistakes are made in this type of homework problem.T K 273  °CTi initial temperature 27  °CTi K 273 27Ti K 300 KTf final temperature 77  °CTf K 273 77Tf K 350 KThe next step is to use Charles law to find the final volume. Charles law is expressed as:Vi/Ti Vf/TfwhereVi and Ti is the initial volume and temperatureVf and Tf is the final volume and temperatureSolve the equation for Vf:Vf ViTf/TiEnter the known values and solve for Vf.Vf (600 mL)(350 K)/(300 K)Vf 700 mLAnswer:The final volume after heating will be 700 mL. More Examples of Charles Law If Charles Law seems irrelevant to real life situations, think again! Here are several examples of situations in which Charles Law is at play. By understanding the basics of the law, youll know what to expect in a variety of real-world situations. By knowing how to solve a problem using Charles Law, you can make predictions and even start to plan new inventions. If you take a basketball outside on a cold day, the ball shrinks a bit as the temperature is decreased. This is also the case with any inflated object and explains why its a good idea to check the pressure in your car tires when the temperature drops.If you over-inflate a pool float on a hot day, it can swell in the sun and burst.Pop-up turkey thermometers work based on Charles law. As the turkey cooks, the gas inside the thermometer expands until it can pop the plunger. Examples of Other Gas Laws Charles law is only one of the special cases of the ideal gas law that you may encounter. Each of the laws is named for the person who formulated it. Its good to be able to tell the gas laws apart and cite examples of each one. As automobile tires heat up during driving, their pressure increases. (Amontons Law: Doubling temperature doubles pressure at constant volume and mass.)When you blow bubbles underwater, they expand as they rise to the surface. (Boyles Law: Doubling pressure halves volume, at constant temperature and mass.)Inhaling fills the lungs with air and expands their volume. (Avogadros Law: Doubling the mass or number of moles of a gas doubles the volume at constant temperature and pressure.)

Analysis on efficiency of Chinese commercial banks Research Proposal

Analysis on efficiency of Chinese commercial banks - Research Proposal Example A series of banking reforms have been implemented in China since 1979. These reforms aim to create a safe and sound system of banking within the country (Dong, 2009). The structural and institutional arrangements characterizing the banking sector in China as well as the banking reforms implemented in China in the past 20 years will provide the background and foundation of the study(Dong, 2009). The researcher felt that for efficiency to be discussed in-depth, it may be necessary for historical antecedents and facilitators of the same to be analyzed in order to provide the reader with a wealth of information. In the last 40 years, financial sectors across the globe have witnessed substantial developments(Dong, 2009). The change in the operating environment of banks has had significant implications for the business activities of banks as well as their economic role. Globalization, deregulation, technological progress and financial innovation to mention but a few have all gradually reduced the cost of processing and transmitting information which have been major forces impacting the performance of the international banking sector. Since the embarking of the open door policy in 1979, the Chinese banking sector has witnessed gradual yet notable reforms(Dong, 2009). A key objective of the said reforms implemented by the government was to build a competitive, effective and stable banking system to improve reliability and efficiency. The reforms aimed at moving the country from a planned economy supplemented with market elements to a socialist market economy. The Chinese government deregulated and liberalized operations in the Chinese banking sector as part of national reforms in the economy. The program applied includes among others the establishment of a double-tier system, separation of the lending policy form commercial

College drop-outs Essay Example | Topics and Well Written Essays - 750 words - 1

College drop-outs - Essay Example It is very difficult for an average student to afford education in a good university. People start their journey of education with a hope to get higher education one day. But by the time they reach that stage, they find their pockets too empty to even think about that. This becomes the cause of drop-outs for a lot of students. This is, indeed, a very unfortunate thing that someone who is capable of studying cannot study only because they don’t have money. There are some students who take loans to afford their education, but they go through a very tough and demanding experience emotionally, psychologically, and physically. Homesickness is a common reason for the drop-out from colleges, both among the native and the international students. Most of the 21.8 million students attending colleges and universities in America would be leaving their homes to explore a new environment, develop new relationships, and do everything by themselves; â€Å"More than a few of those students wi ll suffer homesickness, which can turn into depression, low motivation, insomnia, stomach aches and loneliness -- and their dropout rates are three times higher than non-homesick students, according to one 1993 study† (Lorenz). Native students living in hostels to save the cost of having to move from home to university every day have to live away from their families. Not only do they have to cope with homesickness, but they also have to deal with a lot of other challenges like bullying. A hostel, in no way, compares to a home in terms of environment. There are a lot of distractions in hostels. Young boys and girls form groups and gangs and tend to bully a certain student. The student finds it very difficult to deal with such groups, and eventually drops-out. Things are no less tough for the international students who have come from different countries to study in a certain university. International students also have to deal with many more problems in addition to homesickness; they have to find suitable accommodation and work in order to be able to manage their expenses. They miss their families back home. Those among the international students who cannot deal with all these challenges simultaneously eventually drop-out of colleges. In order to pay the college fee, many students work. This is typically observed among the international students. They come from underdeveloped and developing countries in search of better educational and life opportunities. Their parents are not that rich to pay their fees. Knowing that they have to manage everything by themselves, most international students work along with studying. Most of the times, they find menial jobs like dishwashing and when it comes to pay, every hour counts. They feel obliged to work as many hours as they can in order to be able to earn more. They face a lot of problems trying to manage work with education. Gradually, they realize that even if they drop-out but continue with their work, it would n ot only make their life easier, but would also lend them an opportunity to settle down in the foreign country. They also realize that they are earning more than they possibly can in their native countries. Hence, many international students drop-out of the colleges. Concluding, drop-outs are commonly observed among students of all ages in general and the ones in higher education in particular. While there are many causes of drop-outs, some of the prominent causes include