Exam Review Essays - Mechanics, Physics, Classical Mechanics

Exam Review UNIT 1 KINEMATICS Chapter 2: Describing Motion Acceleration / Time graph What does the vertical axis represent on an acceleration graph? The vertical axis represents the acceleration of the object. What does the slope represent on an acceleration graph? The slope of an acceleration graph represents a quantity called the jerk. The jerk is the rate of change of the acceleration. jerk= t / a What does the area represent on an acceleration graph? The area under an acceleration graph represents the change in velocity. In other words, the area under the acceleration graph for a certain time interval is equal to the change in velocity during that time interval. area= v Velocity / Time Graph What does the vertical axis represent on a velocity graph? The vertical axis represents the velocity of the object. This probably sounds obvious, but be forewarnedvelocity graphs are notoriously difficult to interpret. People get so used to finding velocity by determining the slopeas would be done with a position graphthey forget that for velocity graphs the value of the vertical axis is giving the velocity. What does the slope represent on a velocity graph? The slope of a velocity graph represents the acceleration of the object. So, the value of the slope at a particular time represents the acceleration of the object at that instant. slope= rise over run = v2-v1 divided by t2-t1 = t divided by v slope=acceleration What does the area under a velocity graph represent? The area under a velocity graph represents the displacement of the object. To see why, consider the following graph of motion that shows an object maintaining a constant velocity of 6 meters per second for a time of 5 seconds. Position / Time Graph What does the vertical axis represent on a position graph? The vertical axis represents the position of the object. For example, if you read the value of the graph below at a particular time you will get the position of the object in meters. What does the slope represent on a position graph? The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant. What does the curvature on a position graph mean? If a position graph is curved, the slope will be changing, which also means the velocity is changing. Changing velocity implies acceleration. So, curvature in a graph means the object is accelerating, changing velocity/slope . Frame of Reference : The different observations occur because the two observers are in different frames of reference . A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one anothe r. Vectors and Scalars : Vectors have magnitude and direction, scalars only have magnitude. Displacement: What does displacement mean? If an object moves relative to a reference framefor example, if a professor moves to the right relative to a whiteboard, or a passenger moves toward the rear of an airplanethen the object's position changes. This change in position is known as displacement. The word displacement implies that an object has moved, or has been displaced. Displacement is defined to be the change in position of an object. It can be defined mathematically with the following equation: Position : Where something is located Time Intervals : Durationofasegmentoftimewithoutreferencetowhent hetimeintervalbeginsorends Velocity - Velocity gives us information about the rate of change of your position, meaning how fast your position is changing per unit time. In physics, velocity is defined as the displacement divided by time where displacement is defined as the difference between your final and initial positions. V( ave ) = Delta D / Delta T Constant - When an object travels the same distance every second, the object is said to be moving with constant velocity . This means that the magnitude of the velocity (or speed) and the direction of the velocity both remain constant. Instantaneous - Instantaneous velocity , is simply the average velocity at a specific instant in time or over an infinitesimally small time interval. Average - average

France vs England essays

France vs England essays The rival countries of France and England both came up with a political ruling system that were opposing to each other during the seventeenth century. France developed an absolute system, while England developed a constitutional monarchy. Each of these systems came sprung about because of one major impact in the lives of the people. In France, King Louis XIV was an absolute monarch that believed that everything else should also be absolute. In England, as a result of the glorious revolution, England developed a constitutional monarchy. There were areas in which contributed to each country choosing their mode of ruler ship. Areas such as political problems, social beings, economic status, and most of all religious matters. Englands political system of constitutional monarchy was more effective than Frances approach to centralizing uniformity. In France, Louis the XIV was an absolute monarch. This meant that he was the ruler of rulers. Louis was treated as if he was God, and this was because he was viewed as God. Louis cut a deal with the Pope by telling him the he would make all of France Catholic if he would have a greater share of the more important church revenues, and more control over the Arch Bishops. He was granted his wish, so therefore the edict of Nantes was passed. Louis now had the divine right as ruler. This meant that what ever he said goes only because he was sent from God and you can never questioned anyone sent from God. This was a powerful theory because many believed in God and in the bible so they feared for their lives. Louis was called the sun king because everything radiated from him. He was able to say I am the state and everyone was to follow this. He was an absolute monarch, therefore he did what ever he had to do to make everyone else follow his rules whether it meant war or not. Lou ise only allowed the nobles who supported him to retain their titles and this was n...

People Should Get Their Animals from the Animal Shelters instead of Essay

People Should Get Their Animals from the Animal Shelters instead of Breeders - Essay Example Analyzing human love to animals Irvine stated that â€Å"there can be no single answer to the question of why people form relationships with dogs and cats because our relationships with them have not been of a universal, standard type that could generate a once-and-for-all explanation† (Irvine, 2004). Each way of understanding, describing and treating animals is brightly described throughout history. However, first of all, any person should remember that animals are our best friends which will love us in spite of everything and are incapable of betrayal. Referring to the existed situation it becomes obvious that people need to take care of somebody or something, and a dog or a cat is a good variant of an animal for adoption. Animals can make us smile, and an appeal to take an animal from the humane society/animal shelters instead of breeders becomes more and more actual nowadays. Each year, tens of thousands of homeless cats and dogs get into shelters throughout our country. R ogers mentioned that â€Å"National figures indicate that about half of the animals in shelters are euthanized for lack of good homes† (Rogers, 1998). Thus, the situation with homeless animals has achieved its peak and we should improve it as soon as possible. In such a way, I want people to know that when they buy a pet at a pet store or a breeder, they deprive the animal of the shelter a hope to gain a caring family, taste food, etc. and make it homeless again. It means that buying the pet somewhere people not only deprive a chance for shelter animals to find a new home but also support the farm for the breeding of puppies for sale.  

Product and Pricing Strategy Essay Example | Topics and Well Written Essays - 1250 words

Product and Pricing Strategy - Essay Example te a variety of industrial and office-based computer and laptop solutions, along with state-of-the-art services, software collaborations and innovative accessories. EJ’s Innovations and More has a wide customer base for all of its electronic product offerings. This product will make full use of access to the existing customer base as they are all potential users of computers and laptops. Furthermore, they are already familiar with the brand name of EJ’s and have the trust relationship and faith in the product quality and service assurance of the company. With this product, the company is planning to target all computer and laptop users. The potential customers range from 14 year old girls and boys to aged, retired gentlemen and ladies. However, this plan outlines the target audience, described later, for this particular wave of marketing. The strategy of EJ’s Innovations and More is to offer customers a wide range of personal computers and laptops. These will be available in a variety of designs and colors, suiting the different needs and whims of the customer. They will be available in different varieties, starting with the basic computer or laptop, to the more advanced versions with greater memory capacity, RAM, accessories and additional features. The most important aspect of these computers will be that with registration, they will be ready for immediate use. They will work easily on all software platforms from other companies with minimal installation. To assist the customer, customer support teams will be available 6 days a week and helpline will be open 24/7 to answer any product related questions. The computers and laptops offered by the company will all carry the same brand promise of EJ’s which is one of complete innovation and convenience, designed to make the life of the customer easier and happier. The specific target audience of this plan includes the people aged between 40 to 70 years, especially those with some sort of impairments or

To what extent does leadership research support the idea that there is Essay - 1

To what extent does leadership research support the idea that there is one best way to lead people in organisations - Essay Example This paper touches upon these key areas to establish where leadership reigns supreme, be it a democratic form of leadership or autocratic one, and how that ‘one best way’ to lead the employees within organizations is made proper. Both democratic and autocratic forms of leadership can give rise to motivation which is the basis of knowing that employees will time and again fall down and then get up to make sure that they are positively driven to achieve the organizational objectives through research, analysis and evidence. This is bound to happen because there are times when frustration runs high and people need support from a number of directions. However, on the same token, what is most important is the self-motivation construct that wins many favors for the employees who are looking to solve a problem (Axley, 1996). Motivation is therefore dependent on the people for whom it is coming into play. An employee who is not motivated enough will perform worse off than a person who is motivated to go out there and do something on his own (Fulton, 1998). Under leadership, the seniors also enforce their say through different programs and teamwork exercises. When employees feel that they are being properly led by, jo b satisfaction is bound to happen. When job satisfaction is ensured, leadership comes about in full circle and hence the leaders are able to lead people easily. When employees are satisfied with their jobs, the task of the leader becomes easier. The leadership knows where to instill confidence and in what quantity this has to be done to derive sound results. Also what needs to be understood is the fact that more productivity will be achieved once leaders are able to do their jobs well (Butkus, 1999). Leaders are inclined to exercise restraint over employees who are motivated enough to perform their respective tasks, thus coming directly under the authoritative leadership realms. What this implies is the fact that since they

Importance Of Unity And Harmony To Plato

Importance Of Unity And Harmony To Plato Plato who lived between 427-347 B.C is known for his development of many distinct areas in philosophy such as metaphysical, epistemology, aesthetics and ethics. Plato was a prototypical philosopher whose philosophical ideas had great impact on the subsequent political theories and concepts. Platos philosophy is implied in the use of dialectic method in discussion which involves reflective insights into the nature. Also by way of cognitive optimism this method involves a belief in humans mind capacity to reach for truth and then using it for virtuous and rational ordering of human affairs (p.96). Plato holds that any conflicting interests between the different parts of humanity can be harmonized. Plato proposes a righteous and rational political system which directs to a harmonious unity in a society and that gives chance to each of its parts to develop but not at the disadvantage of others. According to Plato, the practical implementation and theoretical design of such systems is how ever not possible without virtue in a society (p.69). This paper studies the importance of unity and harmony to Plato in his philosophical concepts and how these concepts illustrate themselves at the level of individual soul as well as in the political society. This paper will also evaluate Platos understanding of these concepts and how he uses them to unjustify democratic form of government. In the Platos philosophical theories, justice is one of the most important concepts in ethics and politics. Justice may refer to individual virtue, society order or even individual rights in contrast to the general social order claims. According to Plato justice is simply speaking the truth and giving back or repaying what one has borrowed (p.5). However this definition is grounded on the traditional moral customs and may not be adequate to hold to todays challenge and the power of critical thinking. If rightfully understood, justice does not act as a special advantage to any of the factions of a city but justice represents the common good of the entire political community which is to everyones advantage. Justice provides unity in a society which is fundamental for societys health. A political order that promotes social peace in the environment of friendship and cooperation among different social groups whereby each benefits and each contributes to the common good of the society, is the best according to Plato. Unity and harmony plays a very important role in the republics politics and ethics since both the good soul and the good state are said to be harmonious (p. 99). Plato constantly argues that harmony in a society is achieved when everyone plays his or her role. From this it seems that good is generally achieved when each thing exhibits its essence harmony. However according to Plato good is not just a property that the forms have but its a force from which reality comes from. He argues that if the good is unity and harmony, it is also the first principle of everything, the standard by which everything is what it is, that has as existence and power of all its own (p.100) The courage, wisdom and moderation developed by the guardians, rulers and workers ideally give forth the justice in society which those virtues generate in the individual soul when they are nurtured by the three elements of that soul. Only when the three elements work in harmony and with intelligence under control does the individual or society attain the happiness and realization of which it is capable. In the republic he argues that the good use of a human being and his soul is to live in a just manner as well as to attain a state of unity and harmony (p.110). According to Plato every human being consist of many parts whereby each is different from the other and each has unique goals, aims and appetites. The three parts of the soul are intellect physical desires and courage. However its fundamental to conceptualize the soul as encompassing the many conflicting parts although this state of conflict is unwelcome and meaning that man must attempt to harmonize his soul. According to Pl ato man can harmonize his soul by training each part to function as dictated by nature without hampering other parts business. In this context each part of a mans soul should not only perform its function but also perform it well. So in the case of physical desires one should not look for luxurious pleasures but should look for survival and good health. When the parts of the soul are satisfying their ordinary functions well and under the direction of reason, they are then in harmony and balance with each other and at that instant the soul id unified, just, good and happy (p.99). In this context Plato implies that a mans soul cannot be in harmony when performing functions of aimed at bringing luxurious pleasures to him alone and not caring for the goodness of others. In the republic Plato states that the purpose of man is to use his mind and reason to search knowledge, truth and eventual reality. In this search man should understand that the body is a hindrance and therefore the soul should always struggle against it so as to achieve satisfaction in the individual soul as well as develop a good political society (p.296). The body always confuses the mind with all types of appetites and desires thus giving the mind time to think. According to Plato the man should therefore remove himself entirely from his body and only use it to survive. This way man will be able to reduce the impediments to in pursuing his true function to the best of his ability, for his good and the good of the entire society. This search for mans function and reaching his good life is dependent on justice and harmonization of the soul. . In todays politics its universally believed that democracy which is a government of the people for the people is the most justifiable form of political system. This form of government has two features i.e. freedom and equality which are usually conspicuous in its operations. Democracy can be expressed as the rule of people governing themselves directly or by their chosen representative. However Plato does not consider democracy to be the best form of government. Plato criticizes the unchecked and direct type of democracy of that time because of its leading styles. According to Plato democracy is largely characterised by presence of freedom, but although freedom is a true value it can also be dangerous when its in excess (p.288). When everyone is given the freedom of doing as he or she wishes then this can results to anarchy. On the other hand, in democracy there is equality which means that everyone in these systems has the right and equal capacity to rule (p.288). The right for every one to rule implies therefore that many individuals will seek power in politics not necessarily to help or lead the society but because of their personal gains. These power seeking individuals can therefore make a democratic form of government to be highly corruptible opening ways for potential dictators, demagogues and can thus lead to tyranny. For instance Hitler was democratically elected claiming that he would act on behalf of the people but then he turned to be a tyranny and worked for his own personal interests (.p.296) Plato holds that democratic political systems are and may lead from anarchy to tyranny. This system also lacks proper committed leaders with skills and morals. Though it may not happen in todays liberalized democracies the above reasons are Platos main problems with democracy. According to Plato democracy is a political system that depends on chance and thus without able and virtuous leaders it becomes a dangerous form of government. According to Plato therefore democracy is not possible without unity and harmony between the human soul and body. Harmonization of the soul helps human beings to avoid the temptations of the body such as selfishness and greed and pursue his true function which is also the way to good life in the society (p.268). Harmonization also helps man to fight all sort of bodily desires and appetites which is important for leaders in democratic forms of government. For a society to enjoy the goodness of a democratic form of government it should therefore have leaders with harmony and unity between their soul and body. Thus they will be able to guide the society for the interest and benefits of everybody and not for their own self needs. Conclusion According to Plato for one to be truly happy he or she must participate in the good and to take part in the good one must be just. However not every individual soul that is just and therefore one wonders how the unjust can be happy (p.267). Just or right means nothing thats in the interest of the more powerful. According to Plato injustice is not really ones true self justice. Therefore it should be in one interest to understand happiness. True justice and happiness is concurrently webbed together with self-justice. In the republic Socrates agrees that he also doesnt know exactly what good is but then he says we should endeavour for its knowledge since its what brings happiness. Unity and harmony are therefore important in achieving individual satisfaction and also in developing an appropriately organized political society. Platos unjustifying of democracy may however not be applicable in todays liberal democracy systems. Todays liberal democracies are not only based on freedom and e quality but also on other factors like multi party systems and rule of law.

The Use of Symbolism and Imagery in Tourneurs The Revenger’s Tragedy E

The Revenger’s Tragedy by Cyril Tourneur, was written using symbolism and imagery, which comes from the protagonist (The revenger) Vindice. A main trait of a tragedy is that there will be a downfall of a character within the play, in this case from the opening scene the protagonist, Vindice, is the clear culprit for an emotional meltdown and a tragedy all of his own. These themes of symbolism and imagery in The Revenger’s tragedy are a connection between what is right and wrong. In the first character whom is introduced into the play and is of a high social background, we know this because throughout the soliloquy Vindice speaks using Iambic pentameter (blank verse) however when the character Vindice is in disguise he speaks in prose this shows to the audience that he is not himself. The first sign of symbolism in the play is in the first soliloquy, ‘[holding a skull; he watches as]...’ this skull is a symbol of the loss of his lover Gloriana. Also an example symbolic language from Vindice when using black verse is the reference to the skull, because the skull is seen as an empty ‘shell of death’ and a picture of Gloriana, it also acts as a ornament for the audience to see while he reconstructs her ‘fill’d out’ its hollow bareness of her face and the dazzling eyes that once decorated its â⠂¬Ëœunsightly rings’. The skull of Gloriana could also symbolise the fate of Vindice, the skull acts as a constant reminder of death and it seems to be following him round where ever he goes. There is an inevitable link between the death of his ‘betrothed lady’ and the revenge he seeks upon the royal family. He is trying to set a balance by taking one life because the life of Gloriana was taken, but trying to fix a balance creates Vindice’s in... ...tement says that this family believe that raping women is acceptable because they believe that every woman would enjoy sec and he has no remorse for raping Lord Antonio’s wife. This makes the act of revenge build for Vindice because he is not only killing the Duke for one person but for two women whom were treated wrongly by the duke or his family in this case the duke’s son. The downward spiral of the character Vindice, shows a large scope of emotion, starting with a quite normal grieving process for his partner, to seeking his revenge on the Duke, this revenge soon spiralling out of his control when he decides to get revenge on the whole of the royal family because the Dukes son raped Lord Antonio’s wife. Therefore the use of symbolism and imagery works well and the play follows an effective structure in which the tragedy becomes the tragedy of Vindice alone.