Institute of Technology Essay Example for Free

Foundation of Technology Essay A minor news thing included in MSNBC a month ago, from which the above selection is taken, discusses a 38-year-old maturing atomic force plant in the territory of Vermont that is as yet effective yet seems to present expanding danger to the earth. The nearby and state specialists need it to be decommissioned, yet the proprietor of the plant, Entergy corp. , means to run it for an additional 20 years. The plant meets 33% of the state’s power needs, and the individuals of Vermont are a lot of subject to it for the power, obviously. And yet they have become doubtful of the nature of the board at the plant and the plant’s practicality. The fate of this plant may not be a national or universal concern, yet it is a pivotal issue for the nearby individuals. The principal difficulty of the circumstance here reflects, in microcosm, the incomprehensibly bigger issue of things to come of atomic produced power thusly: would it be advisable for us to energetically grasp it or shrewdly recant it? Huge numbers of the quickly creating nations of the world, particularly, will in general be peppy about the capability of atomic force, while in a portion of the created nations where atomic force has been put to use for producing power for a very long while now there has been an expanding level of restriction to the proceeded with dependence on atomic force, from the perspective of dangers it postures to the earth. As on account of Vermont Yankee force plant, the essential clash in the atomic force part is between the potential and the possible hazard. The Vermont office has still the possibility to flexibly a huge portion of the state’s power requirements for a few decades more which is in no way, shape or form a mean accomplishment, yet there are signs, for example, the ongoing tritium release distinguished at the plant, of the diminished unwavering quality and strength of the plant. The Vermont report incites the inquiry: Can atomic force plants be vigorous and solid when all is said in done? The prizes they proffer may exceed the dangers they present, yet all things being equal, do the awards far exceed the dangers with the goal that the dangers †to the degree they are available †can be viewed as worthy? Various nations of the world have profited by atomic force for quite a few years now with just one significant catastrophe to talk about up until now. Be that as it may, what number of firmly turned away debacles, for example, the Three-Mile Island episode of 1979 there may have been †it is hard to assess. Since, as can be found on account of Vermont office, there is clearly a boundless culture of â€Å"leaks and lies† in the atomic force area, which will in general flawlessly conceal wasteful aspects, blunder, breaks, expanded dangers, etc. The world’s involvement in atomic produced power so far could be viewed as a preliminary or an analysis, in light of which we are constrained to take choices in regards to the eventual fate of atomic force. Ought to the world’s dependence on atomic force be drastically extended, as pushed by numerous atomic force lovers and as was at first expected when atomic force advances were creating in the 1950’s? Or then again, would it be a good idea for us to step by step eliminate our reliance on atomic force and change to a lot more secure other options, or should a center way be received? There are some very much educated individuals who might want to see all atomic force plants shut down †how far are their apprehensions legitimate? Writing Review: 1) Massachusetts Institute of Technology. (2003, 2009) The Future of Nuclear Power: An Interdisciplinary Study. Recovered from http://web. mit. edu/nuclearpower/The specialists at MIT â€Å"believe† in atomic power and noticeably underscore the central favorable position of nonattendance of carbon discharges in its creation. This investigation takes an exhaustive, interdisciplinary way to deal with surveying the achievability of atomic force. While the essential position of MIT favors the expanded utilization of atomic force, the dangers are not made light of. The issues that the atomic business faces are handled in a reasonable and nitty gritty way. The investigation prevails with regards to motivating trust in the capability of atomic force. In spite of the fact that the feelings of dread and concerns are not so much killed, they are not just obscure premonitions of fate now but rather depend on undeniable realities and conditions. The difficulties can be managed, on a basic level, with greater duty and activity. 2) Biello D. (2009). The Future of Nuclear Power: An inside and out Report. Logical American. Recovered from http://www. scientificamerican. com/report. cfm? id=nuclear-future This is a 4-section top to bottom report included in the Scientific American magazine in mid 2009. The primary report, â€Å"Find Fissile Fuel,† investigates the issue of accessibility of uranium and other crude materials for atomic force. The subsequent report, â€Å"Reactivating Nuclear Reactors for the Fight against Climate Change,† looks at the progressing heightening in atomic force creation in the U. S. â€Å"Spent Nuclear Fuel,† the third part, manages the significant issue of atomic waste administration. The last report, â€Å"Atomic Weight: Balancing the Risks and Rewards of a Power Source,† poses the inquiry: â€Å"Is it worth the minor possibility of a significant fiasco? † 3) Department of Trade and Industry, U. K. (2007). The Future of Nuclear Power: The Role of Nuclear Power in a Low Carbon UK Economy. Recovered from www. berr. gov. uk/documents/file39197. pdf This is a UK government white paper/discussion record on the significance of atomic force in tending to the issues identified with a dangerous atmospheric devation and environmental change and guaranteeing proceeded with vitality supplies. Despite the fact that it is a record of exhortation and data gave to the UK government to assist it with deciding, a thought of the particularities of the UK circumstance can be valuable in increasingly broad settings. In the UK, atomic force is as of now making a huge commitment to the ‘electricity creating mix’ and this paper is slanted to the view that it could make a significantly increasingly conspicuous commitment. 4) Mahaffey, J. (2009). Nuclear Awakening: A New Look at the History and Future of Nuclear Power. New York : Pegasus Books Mahaffey, a senior exploration researcher at Georgia Tech Research Institute, has composed a book intended to intrigue laymen about atomic force and its prospects. He needs to give us that atomic vitality isn't the beast it is depicted to be; while the dangers can't be totally moderated it can in any case be utilized in an extremely sheltered way. One of the hindrances to more prominent acknowledgment of atomic force is the general newness of the subject, the level of distance between the regular man and the tall-standing atomic reactors. The creator tries to overcome this issue by acclimating his crowd with the subject in an engaging and connecting with way, to a great extent in an authentic point of view. 5) Smith, J Beresford, N. A. (2005). Chernobyl: fiasco and results. New York : Springer The open view of atomic force has profoundly changed after the Chernobyl disaster. From that point onward, individuals living in the region of an atomic force plant are normally assailed with fears that their establishment doesn't end up being another Chernobyl. Also, if an atomic office is really having some referred to issues, as on account of Vermont, these feelings of trepidation are tremendously exacerbated. In this setting it is extremely relevant to comprehend what caused Chernobyl and survey how likely is it for a comparative calamity to happen once more, for extensively comparable reasons. Smith and Beresford’s definite yet straightforward record of the Chernobyl episode is valuable for building up a psychological image of the occasions that prompted the 1986 incident, what truly happened and how it was taken care of. Procedure: This short paper is worked around a minor episode at Vermont’s atomic force plant and the open response to it †with the point of inspecting the more extensive ramifications of atomic capacity to the eventual fate of the world. We propose to overview the works refered to in the writing survey so as to gather the suppositions and point of view of their writers with respect to the dangers and prizes introduced by the utilization of atomic force. An extraordinary spotlight is laid on the Chernobyl episode. Results: †The MIT investigation of 2003, later refreshed in 2009, is the one of the most definitive examinations in this field. It starts with what might seem like a miserable note that in spite of the extraordinary guarantee atomic force holds concerning fundamentally confining earth’s green house outflows, atomic force is for all intents and purposes confronting stagnation. It suggests a significantly increasing of world’s atomic producing limit of the world by 2050 so as to pivot the circumstance of decrease. Doing so would help in cutting 25% of the augmentation in ozone depleting substance discharges which would happen if such a resurgence of atomic force didn't occur. The security of current reactor structures is significantly better than those of the prior models, and there is exceptionally generally safe of genuine mishaps. In any case, the extremely generally safe related with current atomic reactors remains constant just when their activity executes â€Å"best rehearses. † Expansion is another significant worry with respect to atomic force age. With expanded utilization of atomic force, there is improving probability of abuse of crude materials and innovation for assembling atomic weapons. The current worldwide protections system is a long way from being sufficient, as per the report, to address the more noteworthy security difficulties of a worldwide development in atomic utilization. Particularly, the sort of reprocessing framework that is utilized in a lion's share of atomic force utilizing nations, including European Union, Japan and Russia, presents unjustifiable dangers of expansion. Squander the board is one more significant zone of concern. Shut fuel cycles including reprocessing are commonly considered to offer waste administration benefits, however the investigation isn't persuaded

Emerson and Thoreau Essay Example for Free

Emerson and Thoreau Essay Ralph Waldo Emersons American Scholar features three impacts that influence the brains learning process. The things by which assists with teaching man are nature, books, and through activity. Keeps an eye on mind resembles nature, tremendous and holds numerous privileged insights to be revealed and delighted in. How nature unfurls resembles the unfurling of the brain; what laws administer it are those made by the psyche. Concerning books, Emerson suggests that man should just gain from them careful science and verifiable occasions. He states that books ought to be utilized for motivation and read during inactive occasions. Books ought not be utilized as the authoritative manual for the learning man. They ought not be taken to be truth, for the real factors of the past may not remain constant in the present. Finally, Emerson urges the researcher to participate in labor, administration, and talk. These exercises are the signs of his considerations. Without activity, Emerson says that a researcher has not become completely a man. 2. During Henry David Thoreaus time, he was disappointed with how the legislature ran the nation. His obstruction was for the most part established on the issue of servitude, for which he was incredibly contradicted. As a method of communicating this analysis he composed Civil Disobedience specifying what he figured wasn't right with government and how it very well may be helped. He declares in the paper that the residents have an obligation to stand up when he sees and encounters wrong administration. He compared the administration to machine without a heart that ought not be permitted to bring treachery and subjugate the individuals. Thoreaus protection from what he saw as treachery isn't a type of injustice. He felt it his obligation to stand up and carry positive change to his nation. He urges residents to play an increasingly dynamic job and oppose the unreasonable directs of a still, small voice less machine. Thoreau hypothesizes that the best government is one that doesn't meddle a lot with its residents.

SIPA International Fellows Program Symposium This Friday COLUMBIA UNIVERSITY - SIPA Admissions Blog

SIPA International Fellows Program Symposium This Friday COLUMBIA UNIVERSITY - SIPA Admissions Blog Strobe Talbott, President of the Brookings Institution. Since SIPA and Columbia University are global institutions of learning, I thought many of you would be interested in attending this weeks symposium about the International Fellows Program (IFP), on Friday, April 17, 2015 at the International Affairs Building, Room 1501. The IFP Symposium will feature a keynote address by Strobe Talbott, President of the Brookings Institution and former Deputy Secretary of State, on Russia, Europe, and the U.S., with a focus on the Ukraine crisis and beyond.  Following the keynote, he will be joined for a panel discussion by Maxim Boycko, visiting scholar at the National Bureau of Economic Research; Kim Marten, associate professor of political science at Barnard College; Constanze Stelzenmueller, senior fellow at Brookings; and Stephen Sestanovich, Kathryn and Shelby Cullom Davis Professor for the Practice of International Diplomacy and director of the International Fellows Program. You may RSVP for the event here. If youre asking yourself,  what is IFP?,  well, its pretty simple (and exciting).  The International Fellows Program is a two-semester multidisciplinary seminar open to 30 students of all graduate degree programs at Columbia University. All fellows receive a stipend and study a curriculum with two goals â€" to examine the origins of the current international order, in which the United States has for decades played the leading role, and to look ahead to the new world that will eventually take its place, dominated by a larger number of actors, new problems, and approaches to problem solving that have yet to be defined. Participation in the International Fellows Program provides unique programming and networking opportunities with prominent figures of the international community. (Learn more about IFP in this 4-minute video.) FYI, if you didnt get into the IFP this year, its OK. You may still reapply for the program in your second year! For questions about the program, please contact Director Stephen Sestanovich at  ss2059@columbia.edu.

The Neurobiology of Fear Emotional Memory and...

The Neurobiology of Fear: Emotional Memory and Post-Traumatic Stress Disorder For survivors of traumatic events, the trauma itself is often only the beginning. While some are relatively unaffected, many others will develop post-traumatic stress disorder, or PTSD, an affliction that haunts its victims with terrifying memories, nightmares, and panic attacks. (For a comprehensive list of symptoms and diagnostic criteria, the reader may refer to the DSM-IV, relevant portions of which may be found online (7).) The National Institute of Mental Health estimates that 3.6 percent of Americans between the ages of 18 and 54 suffer from PTSD; 30 percent of those who have spent time in war zones - one million veterans of Vietnam alone - are†¦show more content†¦The distinction between conscious and unconscious memory suggests - and it is generally accepted - that emotional memory involves two brain systems. While conscious memory is mediated by the hippocampus, the amygdala is implicated in emotional memory (1). A small collection of nuclei in the center of each t emporal lobe, the amygdala controls the fear response, receiving and integrating sensory input to determine the level of threat. If the input is sufficiently intense to initiate an action potential, the amygdala triggers other areas of the brain that induce the physiological response that humans interpret as fear (3); the danger has been recognized. The amygdala, though, is involved not just in the fear response, but in the memory of fear, as well. In one test, researchers used functional MRI scans to measure amygdala activity while showing subjects a number of frightening and neutral images. They found that the degree of amygdala activity was a good predictor of both fear level (as reported by the subject) and of the ability several weeks later to recall having seen the image (1). This evidence, along with other studies with similar findings, has made the amygdala the target of much anxiety-disorder research (5), but it continues to raise the question of mechanism. The answer, partial though it may be, appears to lie in classicShow MoreRelatedThe Curent Understanding of the Neurobiology of Memory Reconsolidation and Its Implications for Psychology1863 Words   |  7 PagesThis essay is focusing on the current understanding of the neurobiology of memory reconsolidation and its implications for psychology. This paper will specifically focus on the molecular mechanisms of reconsolidation and research relating to fear memories and using propranolol and D-cycloserine as a treatment of post-traumatic stress disorder. Memory consolidation is the process by which memories are stabilised after being acquired. Consolidation studies have traditionally focused on the hippocampusRead MoreEssay on Post-Traumatic Stress Disorder: Implications For Brain1865 Words   |   8 PagesPost-Traumatic Stress Disorder: Implications For Brain Throughout the course of this semester we have examined numerous issues which have all had different implications for the brain = behavior argument. Some who have been skeptical of the validity of this idea have been swayed by observations that processes and behaviors they originally thought to have a cloudy neurobiological basis in fact have a sound biological and physiological underpinning. One such phenomenon which can help elucidateRead More Reliving the Nightmare: Post-Traumatic Stress Disorder Essay1172 Words   |  5 PagesReliving the Nightmare: Post-Traumatic Stress Disorder After the terrorist attacks on September 11th, horrific images of the towers collapsing, survivors fleeing, and the rescue and recovery efforts inundated television viewers. In the weeks following the attacks, numerous news accounts reported increasing general anxiety among Americans, with many individuals reporting sleep difficulties and trouble concentrating. Additionally, much attention focused on the effects on those who directly witnessedRead MorePost Traumatic Stress Disorder ( Ptsd )812 Words   |  4 PagesPost-Traumatic Stress Disorder, (PTSD), described by DSM-5 is in which he or she has been exposed to a traumatic event either experiencing or witnessing the event. PTSD classified in DSM is related to the family of anxiety disorders but also involves dissociative symptomology (Dombeck). DSM first identified Post Traumatic Stress Disorder as a psychiatric disorder in 1980. The 1980’s had many mental health professionals having trouble diagnosing veterans coming back from the Vietnam War. ScientistsRead MoreA Critical Reflection on Information Processing Theories of Trauma Response1613 Words   |  7 Pagesemotions are stored in memory networks containing information about stimuli, responses, and meanings regarding emotional events. Lang proposed that patients with anxiety disorders have unusually coherent and stable fear memories that are easily activated by stimulus elements that may be ambiguous but bear some resemblance to the contents of the memory (Brewin Holmes, 2003). Adapting this theory to PTSD, Foa et al. (1989) proposed that following a traumatic event, a fear network is formed that storesRead More Post-Traumatic Stress Disorder Essay1420 Words   |  6 Pages There are hundreds of different kinds of psychiatric disorders listed in the Diagnostic and Statistical Manual of Mental Disorders, 4th ed. (DSM-IV). One of them is called Post-traumatic stress disorder (PTSD). Based on the research, post-traumatic disorder usually occu rs following the experience or witnessing of life-threatening events such as military combat, natural disasters, terrorist incidents, serious accidents, or violent personal assaults like rape (Harvard Women’s Health Watch, 2005)Read MoreEssay on Brain Development in Victims of Child Abuse1560 Words   |  7 Pagessuch as emotional problems, flashbacks to traumatic events, and even learning problems, were psychological phenomena only, able to be cured with therapy. Now, however, beliefs are being changed with the help of tools such as MRI imaging, able to detect actual changes in brain anatomy, and it appears that what doesnt kill you may still permanently weaken you, at least when it comes to child abuse. The chief danger to the brain in child abuse, besides direct injury by the abuser, is the stress placedRead MorePost Traumatic Stress Disorder (PTSD) Essay4334 Words   |  18 PagesPost Traumatic Stress Disorder (PTSD) has been the focus of considerable attention, and some controversy, since it was formally recognised in 1980 by the American Psychiatric Association. This essay will discuss the history of this relatively new diagnosis and its place within the DSM-IV-TR, whilst three perspectives of pathological reaction to trauma, namely, socio-cultural, psychological and biological factors will also be compared. In conclusion this essay will discuss how the three perspectivesRead MoreHow Jessica s Early Upbringing Impact Her Current Situation?2248 Words   |  9 Pagesand sexual abuse by parents, the child is not only traumatized, but they are also deprived of a healing interaction in a safe place. The extensive range of effects involved in the adaptation to early unresolved trau ma results in complex post-traumatic stress disorder. Complex PTSD occurs when early, lengthy and inescapable trauma occur; this has significant effects in physiology, development and functioning according to (Herman, 1992 and Navalta, 2004). The resulting personality traits and strategiesRead MoreQuestions and Answers on Physiological and Psychological Needs995 Words   |  4 Pagesphysiological and psychological arousal. When we talk about physiological arousal, it includes palms covered with sweat, amplified muscle strain; and increased breathing and heart rates. In contrast psychological arousal comprises of apprehension, fear, anxiety and stress. There is an unwavering connection between arousal and behavior. Arousal has the affinity to restrain the energy behind behavior. It thus acts as a catalyst to activate behavior so that a particular action can be executed. Arousal has a tremendous

Pros And Cons Of Grade Retention - 1217 Words

Introduction Woolfolk, Winnie and Perry (2016) define grade retention as a process of having a student repeat a grade, due to failure of proper completion. Research has shown both the positives and the negatives factors associated with grade retention, making it a highly debated topic in todays educational systems. There is an immense dispute on whether it is beneficial or detrimental for a student to be refrained form entering the next grade if they are not academically prepared. One perspective describes grade retention as a motivator for students to work harder, in order to avoid the punishment of being held back, while others view grade retention as a way of eliminating social promotion, which causes students to feel left behind as†¦show more content†¦Wu, Hughes, and West (2010) support this statement as their research tested the psychological outcomes of grade retention on first grade children. Wu, Hughes, and West study resulted in the same beneficial outcomes as Ritzema and Shaw have mentioned. Grade retention can also be extremely beneficial the earlier it is used. In a study conducted by Vandecandelaere, Vansteelandt, De Fraine and Van Damme (2016) explain how early grade retention is very helpful as the study conducted on retained kindergartener’s due to their math skills showed no sign of detrimental effects, and in the long-term the children caught up to there fellow peers academic level. Gray-Bobo, Goussà © and Robin (2016) agrees on how the timing of treatment is very important and that grade retention in kindergarteners results in a positive effect. Overall, grade retention provides students with more time to improve their skills, by decreasing negative factors associated with school as well as decreasing failure and the rate of school drop outs, by reducing frustration in the subject (Vandecandelaere et al., 2016). In addition, grade retention ensures that students are working hard to avoid being held back (Woolfolk et al., 2016). Cons Although there are numerous prosShow MoreRelatedWhy Should Parents Decide If Retention Is Right For Your Child?977 Words   |  4 Pagesskills. Teachers never held kids back unless they were still too young to begin first grade. Today kindergarten isn’t quite as relaxed as it used to be. For example, kids are already beginning to learn math and reading skills. This new curriculum helps kids meet new learning standards imposed by the government. Some children might need more time to absorb all the information they will need to know by first grade. For this reason the number of children being held back is increasing. Therefore, theRead MoreBenefits And Backlashes Of High Stakes Testing890 Words   |  4 Pagesface annually due to high-stakes testing. High-stakes testing is the use of a summative test or an assessment to make decisions that are of prominent educational, financial, or social impact (Kubiszyn Borich, 2013). Decisions such as graduation/grade promotion, school/st ate funding, or even job placement or termination. Many critics of high-stakes testing believe that these test cause teachers to teach to the test. Pedulla, Abrams, Madaus, Russell, Ramos, and Miao (as cited in Madaus RussellRead MoreEvaluation Of A Standout Among The Most Vital Drivers Of Student Learning1429 Words   |  6 PagesFill-in-the-blank items tend to test just repetition, redundant reactions and might empower a disjointed study style since retention of bits and pieces of information as a will possibly produce higher scores. They are more challenging to score than specific choice items and scoring regularly should be implemented due to the possibility of more than one answer could be right. Pros †¢ Useful for who, what, where, when substance †¢ Minimizes speculating †¢ Supports more escalated study. †¢ Student mustRead MoreWeek 7 Weak Curriculum Vsinadequateinst1238 Words   |  5 Pagesï » ¿ Weak Curriculum vs. Inadequate Instruction Melissa Mouradjian Grand Canyon University November 12, 2014 Donald Schielke Curriculum and inadequate instruction both have their pros and cons when it comes to the decision-making process of what works best to achieve higher level learning among students. Curriculum mainly focuses on the knowledge and skills that are important to learn where as instruction is what learning will be achieved to meet the needs of students, standardizedRead MoreImpact Of The On The Force984 Words   |  4 Pages However, when you take the easy wrong, what is the impact on our force? Unqualified Leaders When soldiers or leaders make unethical compromises, whether it is inflated evaluation scores, overlooking maturity created by time in service/time in grade, or undercutting the institutional training requirements, you create a raw and in some cases dangerously inexperienced leader. As I have personally witnessed, a promotion of this nature makes the soldier happy because of the increased pay. As NCO’sRead MoreGrade Retention for Children1823 Words   |  8 PagesCan Grade Retention Be Good For a Student? Jennifer Marsek AED200 September 5, 2010 Noura Badawi Can Grade Retention Be Good For a Student? The children of the world are our future and we as a whole need to be sure that they are prepared for such a large task. The world requires that the children are able to read, write and have basic math skills in order to get through life, and be a part of society. This is a job that will become too large if it is not started and mastered in the earlyRead MoreStandardized Testing And Its Effects On Students1194 Words   |  5 Pagesknowledge into your head for the oh-so-important standardized tests. Go home and try to make sense of this sea of information for your good and your school’s. Repeat. This is the normal routine for students to undergo in order to reap acceptable grades on standardized tests. The cost of these tests aren t worth the so-called benefits. Standardized testing is an ineffective tool in the education system because it is detrimental to students’ education and it has negative effects on students. I canRead MoreThe Effects Of Standardized Testing On Students Education System1194 Words   |  5 Pagesknowledge into your head for the oh-so-important standardized tests. Go home and try to make sense of this sea of information for your good and your school’s. Repeat. This is the normal routine for students to undergo in order to reap acceptable grades on standardized tests. The cost of these tests aren t worth the so-called benefits. Standardized testing is an ineffective tool in the education system because it is detrimental to students’ education and it has negative effects on students. I canRead MoreU.s. Department Of Justice Essay1670 Words   |  7 Pagesto pay more attention to their concerns. They cite it as the best chance for improving the working environment. Direct Care workforce challenges remain. These individuals are the backbone of our hospital workforce. HST’s FST’s are hired as a pay grade 7 and have a starting salary of $17,100. State and provider rates should truly reflect support the quality services we provide. Fiscal year 2014 compare to the recent fiscal years in 2015 has strength Georgia economy to sustain the growth in theRead MoreImproving The Work Force Of Apprenticeships820 Words   |  4 PagesLerman, Urban Institute, and Jason Tyszko, Executive Director, Center for Education and Workforce, U.S. Chamber of Commerce Foundation, argue weather apprenticeships are an effective way to train today’s workforce. CQ Research recently published a pro con article â€Å"Apprenticeships† were the two authors argue their side to the readers by using the rhetorical analysis using logos, ethos, and pathos. Robert I. Lerman is in favor of using apprenticeships in today’s workforce for millions of Americans

The Return Nightfall Chapter 3 Free Essays

Later that day Caroline was sitting with Matt Honeycutt, Meredith Sulez, and Bonnie McCullough, all listening to Stefan on Bonnie’s mobile phone. â€Å"Late afternoon would be better,† Stefan told Bonnie. â€Å"She takes a little nap after lunch – and anyway, it’ll be cooler in a couple hours. We will write a custom essay sample on The Return: Nightfall Chapter 3 or any similar topic only for you Order Now I told Elena you’d be coming by, and she’s excited to see you. But remember two things. First, it’s only been seven days since she came back, and she’s not quite†¦herself yet. I think she’ll get over her – symptoms – in just a few days, but meanwhile don’t be surprised by anything. And second, don’tsay anything about what you see here. Not to anyone.† â€Å"Stefan Salvatore!† Bonnie was scandalized and offended. â€Å"After all we’ve been through together, you think we’d blab?† â€Å"Not blab,† Stefan’s voice came back over the mobile, gently. But Bonnie was going on. â€Å"We’ve stuck together through rogue vampires and the town’s ghost, and werewolves, and Old Ones, and secret crypts, and serial killings and – and – Damon – and have we ever told people about them?† Bonnie said. â€Å"I’m sorry,† Stefan said. â€Å"I just meant that Elena won’t be safe if any of you tells even one person. It would be all over the newspapers right away:GIRL RETURNS TO LIFE . Andthen what do we do?† â€Å"I understand about that,† Meredith said briefly, leaning in so that Stefan could see her. â€Å"You don’t need to worry. Every one of us will vow not to tellanyone .† Her dark eyes flicked momentarily toward Caroline and then away again. â€Å"Ihave to ask you† – Stefan was making use of all his Renaissance training in politeness and chivalry, particularly considering that three of the four people watching him on the phone were female – â€Å"do you really have any way to enforce a vow?† â€Å"Oh, I think so,† Meredith said pleasantly, this time looking Caroline directly in the eyes. Caroline flushed, her bronzed cheeks and throat turning scarlet. â€Å"Let us work it out, and in the afternoon, we’ll come over.† Bonnie, who was holding the phone, said, â€Å"Anybody have anything else to say?† Matt had remained silent during most of the conversation. Now he shook his head, making his shock of fair hair fly. Then, as if he couldn’t hold it back, he blurted, â€Å"Can we talk to Elena? Just to say hi? I mean – it’s been a wholeweek .† His tanned skin burned with a sunset glow almost as brightly as Caroline’s had. â€Å"I think you’d better just come over. You’ll see why when you get here.† Stefan hung up. They were at Meredith’s house, sitting around an old patio table in the backyard. â€Å"Well, we can at least take them some food,† Bonnie suggested, rocketing up from her seat. â€Å"God knows what Mrs. Flowers makes for them to eat – orif she does.† She made waving motions to the others as if to raise them from their chairs by levitation. Matt started to obey, but Meredith remained seated. She said quietly, â€Å"We just made a promise to Stefan. There’s the matter of the vow first. And the consequences.† â€Å"I know you’re thinking about me,† Caroline said. â€Å"Why don’t you just say so?† â€Å"All right,† Meredith said, â€Å"I’m thinking about you. Why are you suddenly interested in Elena again? How can we be sure that you won’t go spreading the news of this all around Fell’s Church?† â€Å"Why would I want to?† â€Å"Attention. You’d love to be at the center of a crowd, giving them every juicy detail.† â€Å"Or revenge,† Bonnie added, suddenly sitting down again. â€Å"Or jealousy. Or boredom. Or – â€Å" â€Å"Okay,† Matt interrupted. â€Å"I think that’s enough with the reasons.† â€Å"Just one more thing,† Meredith said quietly. â€Å"Why do youcare so much about seeing her, Caroline? The two of you haven’t gotten along in almost a year, ever since Stefan came to Fell’s Church. We let you in on the call to Stefan, but after what he said – â€Å" â€Å"If you really need a reason why I should care, after everything that happened a week ago, well†¦well, I would think you’d understand without being told!† Caroline fixed shining cat-green eyes on Meredith. Meredith looked back with her best no-expression expression. â€Å"All right!† Caroline said. â€Å"She killed him for me. Or had him called to Judgment, or whatever. That vampire, Klaus. And after being kidnapped and – and – and – used – like a toy – whenever Klaus wanted blood – or – † Her face twisted and her breathing hitched. Bonnie felt sympathy, but she also was wary. Her intuition was aching, warning her. And she noticed that although Caroline spoke about Klaus, the vampire, she was strangely silent about her other kidnapper, Tyler Smallwood, the werewolf. Maybe because Tyler had been her boyfriend until he and Klaus had held her hostage. â€Å"I’m sorry,† Meredith said in a quiet voice thatdid sound sorry. â€Å"So you want to thank Elena.† â€Å"Yes. I want to thank her.† Caroline was breathing hard. â€Å"And I want to make sure that she’s okay.† â€Å"Okay. But this oath covers quite a bit of time,† Meredith continued calmly. â€Å"You may change your mind tomorrow, next week, a month from now†¦we haven’t even thought about consequences.† â€Å"Look, we can’tthreaten Caroline,† Matt said. â€Å"Not physically.† â€Å"Or get other people to threaten her,† Bonnie said wistfully. â€Å"No, we can’t,† Meredith said. â€Å"But for the short term – you’re a sorority pledge this coming fall, aren’t you, Caroline? I can always tell your prospective sorority sisters that you broke your solemn vow about somebody who is helpless to hurt you – who I’m sure doesn’twant to hurt you. Somehow I don’t think they’d care for you much after that.† Caroline’s face flushed deeply again. â€Å"You wouldn’t. You wouldn’t go interfering with my college – â€Å" Meredith cut her off with two words. â€Å"Try me.† Caroline seemed to wilt. â€Å"I never said I wouldn’t take the vow, and I never said I wouldn’t keep it. Just try me, why don’t you? I – I’ve learned a few things this summer.† I should hope so.The words, although nobody said them aloud, seemed to hover over all of them. Caroline’s hobby for the entire last year had been trying to find ways to hurt Stefan and Elena. Bonnie shifted position. There was something – shadowed – behind what Caroline was saying. She didn’t know how she knew; it was the sixth sense that she’d been born with. But maybe it just had to do with how much Caroline had changed, with what she had learned, Bonnie told herself. Look how many times she’d asked Bonnie in the last week about Elena. Was she really all right? Could Caroline send flowers? Could Elena have visitors yet? Whenwould she be all right? Caroline really had been a nuisance, although Bonnie didn’t have the heart to tell her that. Everyone else was waiting just as anxiously to see how Elena was†¦after returning from the afterlife. Meredith, who always had a pen and paper, was scribbling some words. Now she said, â€Å"How about this?† and they all leaned forward to look at the pad. I swear not to tellanyone about any supernatural events relating to Stefan or Elena, unless given specific permission to do so by Stefan or Elena. I will also help in the punishment of anyone who breaks this vow, in a way to be determined by the rest of the group. This vow is made in perpetuity, with my blood as my witness. Matt was nodding his head. â€Å" ¡Ã‚ ®In perpetuity’ – perfect,† he said. â€Å"It sounds just like what an attorney would write.† What followed was not particularly attorney-like. Each of the individuals around the table took the piece of paper, read it aloud, and then solemnly signed it. Then they each pricked a finger with a safety pin that Meredith had in her purse and added a drop of blood beside their signatures, with Bonnie shutting her eyes as she pricked herself. â€Å"Now it’s really binding,† she said grimly, as one who knows. â€Å"I wouldn’t try to break this.† â€Å"I’ve had enough of blood for a long time,† Matt said, squeezing his finger and looking at it gloomily. That was when it happened. Meredith’s contract was sitting in the center of the table so all could admire it when, from a tall oak where the backyard met the forest, a crow came swooping down. It landed on the table with a raw-throated scream, causing Bonnie to scream, too. The crow cocked an eye at the four humans, who were hastily pulling back their chairs to get out of its way. Then it cocked its head the other way. It was the biggest crow any of them had ever seen, and the sun stroked iridescent rainbows from its plumage. The crow seemed, for all the world, to be examining the contract. And then it did something so quickly that it made Bonnie dart behind Meredith, stumbling over her chair. It opened its wings, leaned forward, and pecked violently at the paper, seeming to aim at two specific spots. And then it was gone, first fluttering, and then soaring off until it was a tiny black speck in the sun. â€Å"It’s ruined all our work,† Bonnie cried, still safely behind Meredith. â€Å"I don’t think so,† said Matt, who was closer to the table. When they dared to move forward and look at the paper, Bonnie felt as if someone had thrown a blanket of ice around her back. Her heart began to pound. Impossible as it seemed, the violent pecking was all red, as if the crow had retched up blood to color it. And the red marks, surprisingly delicate, looked exactly like an ornate letter: D And under that: Elena is mine. How to cite The Return: Nightfall Chapter 3, Essay examples

Question Conservation of Energy free essay sample

Missy Diwater, the former platform diver for the Ringling Brothers Circus had a kinetic energy of 15 000 J just prior to hitting the bucket of water. If Missys mass is 50 kg, then what is her speed? Solution: According to energy conservation, the kinetic energy at the bottom of the dive (15,000J) is equal to her gravitational potential energy before the dive. We can use this fact to find her dive height: PE = mgh h = PE/mg = 15,000J / (50kg)(9. 81m/s? ) 31m (rounded) Her speed can also be found from energy conseration: E(final) = E(initial) 0. 5mv? = mgh v = v[2gh] = v[2(9. 81m/s? )(31m) = 25m/s 2. A 750-kg compact car moving at 100 km/hr has approximately 290 000 Joules of kinetic energy. What is the kinetic energy of the same car if it is moving at 50 km/hr? Solution: KE =v^ 2 (Kinetic Energy = speed ^2 If the speed is reduce by a factor of 2 (as in form 100 km/hr) then the KE will reduce by a factor 4. We will write a custom essay sample on Question Conservation of Energy or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Thus,the new KE = 290 000 J / 4 KE = 72 500 J 3. A cart is loaded with a brick and pulled at constant speed along an inclined plane of an angle of 30o to the height of a seat-top. If the mass of the loaded cart is 3. 0 kg and the inclined distance of the seat top is 0. 45 meters, then what is the potential energy of the loaded cart at the height of the seat-top? Solution : PE = mgh PE = 3 kg x 10 m/s/s x 0. 45m PE = 13. 5 J 4. A 75kg trampoline artist jumps vertically downward from the top of a platform with a speed of 5m/s. How fast is he going as he lands on the trampoline 2m below? If the trampoline behaves like a spring of spring constant 5. 2E104 N/m, how far does he depress it? Soluiton : a) s = 1/2(u+v)t 2. 0m = 0. 5 * 5m/s * t 2. 0m = 10 * t t = 2. 0m/20 t = 0. 1s b) Hookes Law states F=kx x is the displacement of the spring (depression) F = Restoring force k = spring constant Rearrange. x = F/k What is the force upon hitting the trampoline? We have the mass so lets work out the acceleration. Acceleration = velocity/time Acceleration = 5/0. 1 = 50m/s^2 F=ma F = 75*50 = 3750N Substitute into Hookes Law x = 3750/(5. 2*10^4N-m) = 0. 072m of depression