Defining Power in Physics

Power is the rate at which work is done or energy  is transferred in a unit of time. Power is increased if work is done faster or energy is transferred in less time. Calculating Power The equation for power is P W/t P stands for power (in watts)W stands for the amount of work done (in Joules) or energy expended (in Joules)t stands for the amount of time (in seconds) In calculus terms, power is  the derivative of work  with respect to time. If work is done faster, power is higher. If work is done slower, power is smaller. Since work is force times displacement (WF*d), and velocity is displacement over time (vd/t), power equals force times velocity: P F*v. More power is seen when the system is both strong in force and fast in velocity. Units of Power Power is measured in energy (joules) divided by time. The SI unit of power is the watt (W) or joule per second (J/s).  Power is a scalar quantity, it has no direction. Horsepower is often used to describe the power delivered by a machine. Horsepower is a unit of power in the British system of measurement. It is the power required to lift 550 pounds by one foot in one second and is about 746 watts. The watt is often seen in relation to light bulbs. In this power rating, it is the rate at which the bulb converts electrical energy into light and heat. A bulb with a higher wattage will use more electricity per unit of time. If you know the power of a system, you can find the amount of work that will be produced, as WPt. If a bulb has a power rating of 50 watts, it will produce 50 joules per second. In an hour (3600 seconds) it will produce 180,000 joules. Work and Power When you walk a mile, your motive force is displacing your body, which is measured as the work is done. When you run the same mile, you are doing the same amount of work but in less time. The runner has a higher power rating than the walker, putting out more watts. A car with 80 horsepower can produce faster acceleration than a car with 40 horsepower. In the end, both cars are going 60 miles per hour, but the 80-hp engine can reach that speed faster. In the race between the tortoise and the hare, the hare had more power and accelerated faster, but the tortoise did the same work and covered the same distance in a much longer time. The tortoise showed less power. Average Power When discussing power, people are usually referring to average power, Pavg. It is the amount of work done in a period of time (ΔW/Δt) or the amount of energy transferred in a period of time (ΔE/Δt). Instantaneous Power What is the power at a specific time? When the unit of time approaches zero, calculus is needed to derive an answer, but it is approximated by force times speed.

Analysis Of The Film Half The Sky - 1764 Words

Domestic violence, sex trafficking, female genital mutilation, sexual harassments and rape are all forms of violence against women. These atrocious acts against women and children have been dated back to when African Americans were apart of the institution of slavery. Compare to males, female slaves are subject to have sexual encounters with their masters. In Harriet Jacobs, Incidents in the Life of a Slave Girl, we are able to witness enslavement in the perspectives of a female slave. Moreover, it unveils how masters felt like they had total control over a female slave’s mind and body. As time progressed, women became more empowered and independent in the Unites States. However, women are still subject to violence and gender inequality in many parts of the world. The film, â€Å"Half the Sky† portrays how women and girls in poverty-stricken countries such as India and Vietnam, face a plethora of hardships that prevents them from obtaining an education. They are inferio r to men and are expected to stay at home to care for their family. The film also depicts how women and children are trafficked for the purpose of sexual and labor exploitations. During the 19th century African American men, women and children were captured, held in confinement, brutalized and deprived of their basic human rights to be free. The institution of slavery had a major effect on female slaves. Being a male or female slave came with its own cruelties. For example, female slaves were sexually exploitedShow MoreRelatedThe Lion King s Model Of The Hero s Journey Push An Agenda Towards Adults1139 Words   |  5 Pageschildren as the target audience†? Yes, although it is a children’s movie, it does push an agenda towards adults. We have covered a couple out of several lessons the directors fixed to the audience. We can now draw three important implications of this analysis. 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The Odyssey The Use Of Hubris Essay free essay sample

The Odyssey: The Use Of Hubris Essay, Research Paper # 8220 ; There is no safety in limitless hubris # 8221 ; ( McGeorge Bundy ) . The dictionary defines hubris as overbearing pride or given ; haughtiness. In The Odyssey, Homer embodies hubris into the characters Odysseus, the Suitors, and the Cyclopes. Odysseus shows hubris when he is combating the Cyclopes, the Cyclopes show hubris when covering with Odysseus, and the Suitors show it when Odysseus confronts them at his place. To get down, within the class of The Odyssey, Odysseus displays hubris through many of his actions. The most outstanding case in which Odysseus shows hubris is while he and his work forces are seeking to get away from the Cyclops Polyphemus. They drug the monster until it passes out, and so stab him with a lumber in his individual oculus. Polyphemus, now blinded, removes the mammoth bowlder barricading Odysseus # 8217 ; flight, and delaies for the work forces to travel, so he can kill them. We will write a custom essay sample on The Odyssey The Use Of Hubris Essay or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The work forces escape from the cave to their boat by binding themselves under flocks of random-access memories, so they can easy steal by. Odysseus, now proud after crushing the giant, starts to shout at Polyphemus, alternatively of doing a soundless Es ness. Odysseus’ work forces inquire him to halt before Polyphemus would â€Å"get the scope and lob a boulder† ( 436 ) . But Odysseus shows hubris by stating that if they were to run into once more, Odysseus would â€Å"take your life† and â€Å"hurl you down to hell! † ( 462 ; 463 ) . Polyphemus, now highly angry with Odysseus, prays to his male parent, Poseidon, to do Odysseus â€Å"never see his home† once more, and after which, throws a mountain towards the sound of Odysseus’ voice. ( 470 ) . Because of Odysseus’ hubris after blinding Polyphemus, Poseidon grants the supplication, and it takes Odysseus 20 old ages to return place, at the cost of the lives of all his work forces. Following, Polyphemus demonstrates hubris by believing that because he is a elephantine, he is unbeatable by anyone, even a God. This is shown when Odysseus meets Polyphemus and greets him with gifts, as it is a usage to demo courtesy to hosts and invitees likewise, ( unexpected or non ) . Failure to give gifts can take to avenge from the Gods. Odysseus tells Polyphemus # 8230 ; The remainder of the paper is available free of charge to our registered users. The enrollment procedure merely couldn # 8217 ; t be easier. Log in or registry now. It is all free!

Self-Test Questions on Organization Structures and Designs Essay Example

Self-Test Questions on Organization Structures and Designs Essay Truest. Social network analysis identifies the informal structures and their embedded social relationships that are active in an organization. False. Identifying the informal structures and their embedded social relationships that are active in an organization defines social empowerment analysis. Truer. Three common types of traditional organizational structures are functional, divisional, and matrix. Truer. A potential disadvantage of functional structures concerns difficulties in pinpointing responsibilities for cost containment, product or service laity, timeliness, and innovation. Truer. Included among the potential advantages of divisional structures are more flexibility in responding to environmental changes and clear points of responsibility for product or service delivery. Truer AAA work process is a group of tasks related to one another that collectively creates something of value to a customer. Truer 1 . The potential disadvantages of team structures include conflicting loyalties among members regarding both team and functional assignments and the excessive time spent in meetings. Truer 2. The advantages of network structures include (a) staying cost competitive through reduced overhead and increased operating efficiency, and (b) operating with fewer full-time employees and less complex internal systems. Truer 3. A virtual organization is a special form of a boundaries organization. True. Decentralized authority, fewer rules and procedures, and personal means of coordination are characteristics of organic designs. Truer 5. Adaptive organizations operate with a minimum of bureaucratic structure and with cultures that encourage worker empowerment and participation. We will write a custom essay sample on Self-Test Questions on Organization Structures and Designs specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Self-Test Questions on Organization Structures and Designs specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Self-Test Questions on Organization Structures and Designs specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Falsely. Narrow spans of control create an organization that is more efficient and flexible, whereas wider spans Of control usually result in additional management overhead costs. Truer 7 -Authority is the right to act in ways to carry out the assigned tasks. Truer 8. Staff can grow to the point where it costs more in administrative overhead than the staff is worth. Multiple Choice AAA. We dont empower others because we fear losing B. Employees C. Trust D. Money E. None of the above . A. Control 820. Is the process of arranging people and other resources to together to accomplish a goal. A. Planning. B. Organizing C. Controlling. D. Leading. E. Straightening. AAA . Any organization structure should and . A. Allocate task assignments through a division Of labor provide for the coordination Of performance results. B. Allocate task assignments through a division of labor provide for the creation of a horizontal organization. C. Allocate organizational resources to important departments provide for the oversight of less important departments. D. Assign good leaders to the effective work teams assign poorer leaders to marginally effective work teams. E. Assign organizational objectives to divisions, departments, and work teams provide for the coordination of performance results. EYE. Which of the following pieces of information cannot be determined front an organization chart? A. Formal communication channels. B. Type of work performed. C. Division of work. D. Levels of management. E. Informal decision-making coalitions. 24. Jill, a recent MBA graduate in the field of accounting, is the finance manager of ION Company. Jill has a problem with a shadow organization in his division. One sensible first step in Sills management strategy might be A. Meeting with his employees to let them know he is the boss. B. Promising bonuses only to those employees who agree with him and work with him. C. Seeking to understand and work with the shadow organization. D. Firing the people who are members of the shadow organization. E. Assuming his staff is trying to undermine him and act accordingly. CA. When an organization chart shows vice presidents of marketing, manufacturing, finance, and human resources reporting directly to the president of a company, the top management group is organized as a structure. A. Horizontal. B. Vertical. C. Functional. D. Divisional. E. Matrix. DAD. Structures that group together jobs and activities that are serving the same customers or clients are called B. Process. C. Matrix. D. Customer. E. Geographical. Structures. A. Product. B 27. EX. Marketing creates teams of employees from varying departments within the organization when working on projects for their clients. This combination of members from different areas of work responsibility is an example of: A. Interdepartmental team. B. Cross-functional team. C. Self-managing team. D. Task team. E. Network team. E 28. Organizations are those in which teamwork and intense communication take the place of formal lines of authority. A. Divisional. B. Functional. C. Geographical. D. Matrix. E. Boundaries. C 29. Triple Z Inc. Is a new company that is contemplating the type of organizational design to use in its operations and is considering a design that is characterized by decentralization, wider spans of control, and few rules anal procedures. Triple Z is considering which type of design? : A. Mechanistic. B. Traditional. C. Organic. D. Bureaucratic. E. Transformational. C 30.