Power In Physics Essay Example for Free

Power In Physics Essay Power is an important quantity used to describe the rate of doing work or the rate of the transformation of one form of energy into another. In other words, it is the ratio of the work done and the time required to do that work; thus, it is the rate at which a machine accomplishes a given amount of work. Two common units of power are horsepower (550 foot-pound per second), for mechanical devices; and the watt (.737 foot-pounds per second), for electrical devices. Since there are a number of topics under the category of power, let’s focus on one of its units which is the horsepower.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   A horsepower is a unit of power. One horsepower (abbreviation, HP or hp) equals 550 foot-pounds as mentioned earlier is the amount of work done by one pound of force exerted through a distance of one foot). The metric unit is the watt; one horsepower equals 745.7 watts.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Originally, horsepower mean the ability of a horse to perform heavy tasks such as turning a mill wheel or drawing a load. James Watt (1736-1819), inventor of the first efficient steam engine, chose horsepower as a standard to which the power of an engine could be meaningfully compared. Watt’s measurements of horsepower were widely accepted, even though the measurements applied only to very strong horses working for brief periods. Although the horse is no longer an important source of power, Watt’s standard is retained for rating engines, turbines, electric motors, windmills, and waterpower devices.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Indicated horsepower is the power an engine would develop if it worked without frictional losses. Brake, or shaft, horsepower (also called delivered horsepower) is the actual power output of an engine Mechanical efficiency of an engine is the ratio between brake horsepower and indicated horsepower, and friction horsepower is the difference between indicated horsepower and brake horsepower.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Water horsepower is a measure of water power. The falling of 33,000 pounds (14, 969 kg) of water over a distance of one foot (30 cm) in one minute produces one horsepower). Thrust horsepower is a measure of the power of a jet or rocket engine. It is also a measure of the rotational power that an engine-driven propeller converts into thrust. (Thrust is the forward force of propulsion). Taxable horsepower is calculated by state and local governments for the purpose of assessing taxes on automobiles and other machines. Taxable horsepower, usually based on a formula using the diameter and number of cylinders, is usually much lower than brake horsepower. An average man while running can develop about one horsepower for a brief period and about one-seventh horsepower for sustained periods. Small motors in household appliances are rated at about one-third to three-fourths horsepower. Reference: Sikorsky, Bob (1997). Horsepower Measured 2 Ways. The Washington Times.

On the Futures of the Subject :: Philosophy Philosophical Papers

On the Futures of the Subject ABSTRACT: This paper is intended as an inquiry regarding contemporary critical assays of subjectivity. In response to the contemporary politics of representation, both in expressions of essentialist identity politics and in versions of social constructivism, and their implication of all pedagogical practices in transfers of power, I wish to project the question of the subject’s futures. I choose to discuss the limits of the interior, monadic subject for consideration not only its historical and contemporary effects in the politics of representation, but also for the possibility of thinking beyond it. In the spirit of Foucault’s ethical project only a special kind of curiosity and a thinking ‘otherwise’ could, if luck and wit permit, allow us as individual subjects to go beyond ourselves. Thinking otherwise, when possible, could also suggest going beyond ourselves collectively in the creation of provisional critical pedagogical and ethical community. The notion of a decentered subject, now affixed to postmodern thought and practice, remains elusive. As a sometimes notorious, sometimes vogue tenet of cultural politics, the multiple, positioned subject breaks from traditional anchorages, whether theological, philosophical and political and their cultivation of experience. Most difficult for public critical reception are accounts of fragmentation and centerless identity, fueling charges that a moral vacuum has been excavated. The risk of losing any guarantee to permanence, order and a planned purpose to life is too great a secular leap into the void for most modern individuals to accept. While the specters of social fragmentation have been recognized as modes of experience under reifying modern social relations, the split subject, from Descartes to Freud and, on into postmodernism's displacements, a nostalgia for a substantial, core self persists. This paper is intended as an inquiry regarding contemporary critical assays of subjectivity. In response to the contemporary politics of representation, both in expressions of essentialist identity politics and in versions of social constructivism, and their implication of all pedagogical practices in transfers of power, I wish to project the question of the subject's futures. I choose to discuss the limits of the interior, monadic subject for consideration not only its historical and contemporary effects in the politics of representation, but also for the possibility of thinking beyond it. In the spirit of Foucault's ethical project only a special kind of curiosity and a thinking `otherwise' could, if luck and wit permit, allow us as individual subjects to go beyond ourselves.

Improving English Teaching Essay

An importance of English language cannot be denied by anyone as English language is considered as an international language. It also affects people worldwide in many aspects such as education, trading, medicine and technology. According to, Thailand does not use English as an official language, so most of Thai people have to study English from their school since they were young. Even though, we have been studying English for a long time, the skill of English is not satisfied as much as it is. As we have known that Thailand is going to be a part of Asean Economic Community (AEC), the procedure of Thai education in teaching English should be changed to be more efficiently for Thai students. In addition, to be successful in English language including writing, reading, listening and speaking for Thai people depends on the way of teaching English in Thai education system. Improving English teachers in Thailand is an important way to improve English skill. The English teachers have to be good in teaching not only having a bachelor degree but cannot impart any useful knowledge to their students. Moreover, the primary school is the most important period for the students. If the teachers are not good enough in teaching English which can affect to their quality of teaching, the Thai education will fail as a whole. Besides, the teachers have to motivate the students to have a positive attitude towards English language too. The reason why the students and also the general population do not want to speak or even use English language are because they are scared of using English language and they are afraid that they will make a mistake and the native English speaker will ridicule at them, in this case the teacher is the key to change the students’ attitude. Furthermore, Thai education system should alter the system of teaching and style of studying. Since we were young, we have been taught only about grammar and vocabulary but the weakest point of Thai students is that they are not confident to ask any questions or share their ideas not just sitting and listening their teachers without any critical thinking because of the old-fashioned system in Thailand. Most of elderly are concentrated on the principle as well but they do not concern that the students can apply the knowledge in their daily routine or not. If the teachers can change their teaching, the quality of studying English in Thailand will increase definitely. Another point of improving teaching English is that most of Thai schools at the present like to employ a foreign teacher, but the most important part is that the teacher should have a qualified language teacher or at least a bachelor degree and a teaching license not only being a native English speaker. Additionally, Thai school should employ more English native speaker because many Thai teachers does not speak English well enough and also have limited English knowledge to teach the students. The foreign teachers can be a good motivation for Thai students as when we study with the foreign teachers, we have to be an active student to share our ideas or experiences to the teachers which is quite different from Thai teachers. To conclude, this is very clearly that English language is playing a major role in the process of globalization. Therefore, to improve the teaching English in Thai education system, both the English teachers and Thai students should cooperate with each other. If Thai people can have the ability and quality of using English language, the other countries will not look down at Thai people certainly.

Production Of A Production Plant Essay - 1951 Words

In a production plant there is are many microcultures within an organization broken down into different groups such as production, engineering, and leadership groups. For this paper I will describe the microcultures within the production group. Within my corporation all the above groups receive the same corporate training, however the culture between the groups are very different. Considering the many years I have in the culture of the production group in addition to a short tenor of ten months in leadership group I will approach the paper using participation observation. The production group is broken into four individual groups A,B,C, or D and each group possess their own personality and beliefs about how the process should be run. I have had the opportunity to work on B shift as an operator prior to entering into the leadership role, therefore I will use my experience in the field and as an outsider to describe the nature of the microculture within the B shift. Each shift runs with a five man crew, three operators and two loaders working twelve hour rotating shifts while the plant runs twenty four hours a day three hundred and sixty five days a year. The production group shares a common goal with the leadership group such as ensuring the safety of human health and environment in addition to producing a quality product, however the way of thinking between the two groups is very different. The nature of the production group consists of believing their contributions toShow MoreRelatedThe Production Of A Production Plant Essay1897 Words   |  8 Page sIn a production plant there is a of many microcultures within an organization broken down in different groups such as production, engineering, and leadership groups. For this paper I will describe the microcultures within the production as they share the same training of corporate culture as the other groups the culture within the group is very different. 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