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review the various types of energy sources essay
review the various types of energy sources essay
An essay on conservation of energy
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The Conservation of Energy
Physics Essay: The Conservation of Energy
Since the beginning of time, energy has pervaded our earth. These days we rely on it to advance in our technological developments. We also need energy for a variety of other things such as: to keep our bodies alive and healthy, to run our machines and other technical devices, we also rely on energy to keep warm in winter and cool in summer.
Energy is the ability to do work. People and other things can run out of energy (e.g. a marathon runner) in which case they can no longer have the ability to do work. In a mechanical situation, if a machine has energy it has the ability to apply a force to another body. There are many different forms of energy and there are many different places by which energy can be gathered. Forms of energy include: Potential energy, kinetic energy, gravitational potential energy, elastic potential energy and there are many more. Energy can be gathered in many ways using our natural recourses from the environment, for example: solar energy (from the sun) and hydroelectricity (where electricity is gathered by rushing water)
Hydroelectricity is when electricity is generated by rotating coils of wire (rotors) between the poles of a magnet. The rotors are turned by rushing water falling over them. In a hydroelectric plant, water in usually stored in a damn. As the water falls down and rushes over the vanes connected to the rotors it looses gravitational potential energy and ga...
King, Rosemary. "O'Brien's 'How to Tell a True War Story.'" The Explicator. 57.3 (1999): 182. Expanded Academic ASAP.
An article called, “The Real War,” written by Roger J. Spiller, begins with a quote by Walt Whitman, “The real war will never get in the books.” The author writes about an interview with Paul Fussell, who was a soldier in World War Two and has written many books about World War One and World War Two. Fussell is very opinionated and critical about other books written about these wars, asserting they are not realistic or portray the true essence of what really occurred by soldiers and other people participating in the wars. I claim that it is impossible to convey the actual personal feelings and emotions of those involved in a war in books or any other forms of media.
Hynes, Samuel Lynn. "What Happened in Nam." The soldiers' tale: bearing witness to modern war. New York, N.Y., U.S.A.: A. Lane, 1997. 177-222. Print.
King, Rosemary. "O'Brien's 'How to Tell a True War Story.'" The Explicator. 57.3 (1999): 182. Expanded Academic ASAP.
On July 8, 2003, George W. Bush delivered a speech at Goree Island, Senegal in an attempt to acknowledge and atone for America’s past of slavery. This speech served as a confession of America’s past “sins”, and a movement towards restitution for these “sins” through the proposition of “economic partnership and political partnerships” (Medhurst 258), and a promise of American investment to fight AIDS in Africa.
Banneker uses emotional appeals to provide a sense of compassion and responsibility in the reader. Banneker asks Jefferson to look back on when the colonies were exploited by the British and notice the analogy between the colonies being oppressed by the British and the white oppression of the blacks that they now come to terms with because of slavery. Through this appeal to a time of oppression for Americans, Banneker creates a sense of compassion for his enslaved people because white men and Jefferson “cannot acknowledge the present freedom and tranquility which you enjoy” now that Americans are free from the “arms of tyranny of the British crown.” Readers feel a sense of responsibility for the African Americans remained enslaved even after their country was freed from the British.
O’Brien gives the reader an example of a true war story when he tells of the soldier that jumped on a grenade to save his friends however the grenade took all their lives away. On page 61, O'Brien states that this is a true war story that never happened. This is a true war story because it fits his criteria about how a war story should be but the story never actually happens. This is a true war story because it is sad because shows loss despite the soldier’s effort to save his
“This is true.” (O’Brien, 420) – with this simple statement which also represents a first, three-word introductory paragraph to Tim O’Brien’s short story, “How to Tell a True War Story”, the author reveals the main problem of what will follow. “Truth” – when looked up in a dictionary, we would probably find definitions similar to sincerity and honesty on the one hand, and correctness, accuracy or reality on the other hand. When looking at these definitions, one can make out two groups of meaning: While sincerity and honesty are very subjective, correctness or accuracy are supposed to be objective by nature. One can be sincere and still not report the truth, due to the simple fact that one does not know any better. Accuracy, however, is supposed to represent facts, bits and pieces of information that paint a picture of an event, untouched by opinion or attitude.
To write a true war story that causes the readers to feel the way the author felt during the war, one must utilize happening-truth as well as story-truth. The chapter “Good Form” begins with Tim O’Brien telling the audience that he’s forty-three years old, and he was once a soldier in the Vietnam War. He continues by informing the readers that everything else within The Things They Carried is made up, but immediately after this declaration he tells the readers that even that statement is false. As the chapter continues O’Brien further describes the difference between happening-truth and story-truth and why he chooses to utilize story-truth throughout the novel. He utilizes logical, ethical, and emotional appeals throughout the novel to demonstrate the importance of each type of truth. By focusing on the use of emotional appeals, O’Brien highlights the differences between story-truth and happening-truth and how story-truth can be more important and truer than the happening-truth.
Several stories into the novel, in the section, “How to tell a true war story”, O’Brien begins to warn readers of the lies and exaggerations that may occur when veterans tell war stories.
The truth to any war does not lie in the depths of storytelling but rather it’s embedded in every person involved. According to O’Brien, “A true war story does not depend on that kind of truth. Absolute occurrence is irrelevant. A thing may happen and be a total lie; another thing may not happen and be truer than the truth” (pg. 80). Truths of any war story in my own opinion cannot be fully conveyed or explained through the use of words. Any and all war stories provide specific or certain facts about war but each of them do not and cannot allow the audience to fully grasp the tru...
Tim O’Brien’s novel The Things They Carried challenges the reader to question what they are reading. In the chapter “How to Tell a True War Story”, O’Brien claims that the story is true, and then continues to tell the story of Curt’s death and Rat Kiley’s struggle to cope with the loss of his best friend. As O’Brien is telling the story, he breaks up the story and adds in fragments about how the reader should challenge the validity of every war story. For example, O’Brien writes “you can tell a true war story by its absolute and uncompromising allegiance to obscenity and evil” (69), “in many cases a true war story cannot be believed” (71), “almost everything is true. Almost nothing is true” (81), and “a thing may happen and be a total lie; another thing may not happen and be truer than the truth (83). All of those examples are ways in which O’Brien hinted that his novel is a work of fiction, and even though the events never actually happened – their effects are much more meaningful. When O’Brien says that true war stories are never about war, he means that true war stories are about all the factors that contribute to the life of the soldiers like “love and memory” (85) rather than the actual war. Happening truth is the current time in which the story was being told, when O’Brien’s daughter asked him if he ever killed anyone, he answered no in happening truth because it has been 22 years since he was in war and he is a different person when his daughter asked him. Story truth
No matter what the third body is, if the first and second bodies are in equilibrium, the third follows that pattern. The property of temperature in this law is a crucial cause of equilibrium due to the fact that increasing or decreasing the temperature varies the energy by creating disorder when it is absorbed into the body and disperses. For this law, “[w]hat is important is that the Zeroth Law establishes that temperature is a fundamental and measurable property of matter” and “it supersede[s] the other three laws” (“What is the Zeroth Law of Thermodynamics?”). In several reactions, especially in chemical reaction, temperature plays a major role in all of it. A potential comparison is that if a person shares a room with another person and both are organized, they will organize their room to their standards. The two people compare to the two bodies that are at equilibrium and the third body achieves equilibrium with the other two. In this case, organization is the property to achieve that equilibrium. In addition, relating to the first law, the transfer of energy can have increased strength based on the temperature such as in electricity in different reactions in the light bulbs. For the second law, energy relates to entropy where temperature can increase the energy that can increase the entropy, leading to further chaos and havoc.
A hydropower plant consists of a dam and powerhouse. The dam holds the water in a reservoir, which is kind of like a small lake, and the powerhouse surrounds the turbines and generators that produce electricity. When power is needed, water is let out from the reservoir through a large pipe and into a turbine attached to a generator that spins, in turn, producing electricity. After going through the turbine, the water returns to the river on the downstream side of the dam. (Figure 1.1 shows a typical hydropower plant) (Wikipedia.com)
Renewable energy are resources which are replenished on a quickly such as sunlight, wind, water, and geothermal heat. While seeming quite modern and new, most forms of renewable energy have been around for hundreds of years: The first hydroelectric plant was built in Appleton, Wisconsin in 1882, later in 1888 the first windmill to generate electricity was built in Ohio by Charles F. Brush. Surprisingly people used the sun to power machinery 32 years earlier, the first solar powered machine was built in 18...