Physics, Roller Coasters Essay Example for Free

Physics, Roller Coasters Essay Roller coasters Additional notes: GPE = m x g x h KE = m x v? The main energy transfers that happen as a car travels along the track from the start of the ride to the end: [1]The rollercoaster car gains gravitational potential energy (GPE) as it travels to the top. Once over the top, the car gains speed as GPE is transferred to kinetic energy (KE). As it travels to the top of another loop, KE is transferred to GPE. Not all the energy is transferred to or from GPE – some is transferred to the surroundings as heat and sound. All moving objects have kinetic energy, KE. The kinetic energy an object has depends on the mass and speed. If the mass doubles, the KE doubles and if the speed doubles, the KE quadruples. Normally energy is lost through sound and heat (friction, air resistance). How the heights of the hills are designed to allow an empty car to reach the end of the ride: [2]The hills are designed so that it is low enough that the momentum of the car from the previous drop carries it up and over the hill. This is why the hills are usually lower towards the end of the ride, because the car has lost momentum due to friction and air resistance. Mainly the consecutive hill must be lower as it will not have enough energy because some of it is lost and sound and heat. Therefore, if the car was to reach the end of the ride, the height of the hills must be lower each consecutive time. How the energy transfers determine the heights of the hills: [4] After the roller coaster is drops from the first hill it does two things with its energy. First, it begins to transform that energy from one form to anotherfrom gravitational potential energy to kinetic energy and from kinetic energy to gravitational potential energy, back and forth. Second, it begins to transfer some of its energy to its environment, mostly in the form of heat and sound. Each time the roller coaster goes downhill, its gravitational potential energy decreases and its kinetic energy increases. Each time the roller coaster goes uphill, its kinetic energy decreases and its gravitational potential energy increases. But each transfer of energy isnt complete because some of the energy is lost to heat and sound. Because of this lost energy, the roller coaster cant return to its original height after coasting downhill. Thats why each successive hill must be lower than the previous hill. Eventually the roller coaster has lost so much of its original total energy that the ride must end. With so little total energy left, the roller coaster cant have much gravitational potential energy and must be much lower than the top of the first hill. This is why the hills must be a certain height, in order to transfer enough GPE into KE. Bibliography: [1] http://www. bbc. co. uk/schools/gcsebitesize/science/add_ocr_gateway/forces/themeridesrev2. shtml [2] http://science. howstuffworks. com/engineering/structural/roller-coaster3. htm [3] http://www. coasterforce. com/coasters/technical-info/physics-of-a-coaster [4] http://library. thinkquest. org/26455/amuse/roller/roller01. shtml [5] Collins Additional Sciences B ISBN-13 978-0-00-741531-1 Colin Bell, 2011

Tips on Writing :: Literature

Tips on Writing There are many different aspects to consider when writing a paper. In order to get the reader's attention, the topic or thesis has to be of interest. Choosing a title appropriate for the essay is also important. Detail and proper structure are also important. These things combine together to make a good essay. The title of an essay is important to the way a reader views the essay. Some titles turn the reader off to the article. In the definition essay we chose, "The Value of Honesty," the title explains that the article is about honesty and that honesty is being valued. Our second essay, "Unlikely Learning," lets the reader know what the essay is about. It talks about the learning a student experiences in unexpected places. "Athenian Adventure" is a good title because the essay is full of the adventures of a day in Athens. The fourth essay we chose was a narrative, "Blue Band Emotional High." This was a good title because it explained the feeling of being chosen as a band member. We think the titles of the essays we chose were good indicators of what the essays were about. Along with capturing the reader's attention, coming up with an appropriate title and adding plenty of detail, a well-written essay has to have the proper structure. Structure consists of an introduction paragraph, several body paragraphs, and a conclusion. Examples of strong structure can be seen in "Blue Band Emotional High." In this essay, the writer uses a strong thesis sentence to build her body paragraphs upon. she writes, "The proudest moment of my life was when I became a member." The following body paragraphs go on to describe the rigorous practice, the suspense of waiting in the trampled field waiting for her name to be called, and then finally hearing it over the megaphone declaring her a member of the band. Without this kind of structure the essay wouldn't even be worth reading. All in all, structure is an extremely important element, if not the most important to good essay writing. A good piece of writing has to keep the audience interested and entertained. If it's hard to keep one's attention on writing, the reader won't fully comprehend it. It would be hard to have every reader interested in one's writing, so one should appeal to a certain audience.

Better Business Bureau Essay

The BBB was created to establish an environment of trust between buyers & sellers. This trust is created through the BBB’s â€Å"standards of trust†. Companies that abide by these standards in turn receive accreditation. As a not for profit, the BBB relies on funds from sponsors and members. Up until recent, the BBB seemed to have offered special benefits to those that paid a fee to become members. Such accusations have caused the BBB to address their current system and make changes to ensure fairness amoung members and non-members. 1)Who is the BBB’s most important stakeholder, business or consumers? ->The most important stakeholder for the BBB is the consumer. Yes, businesses provide the resources for the BBB, but they only do this to create a positive image for their brand in the eyes of consumers. If the consumers did not care about the ratings of the BBB then businesses would not invest. 2)Do you think the BBB can truly be impartial given its financial dependence on business? ->No the BBB can’t be impartial. There needs to be a reason for companies to invest in the BBB. If the treatment of non-members were truly the same as members, then the company will give companies little reason to invest. 3)What actions can you take to make sure the â€Å"pay for play† scheme did not happen again? ->The main issue with the â€Å"pay for play† scheme was the fact that those who sold first year memberships received a 45 percent commission. This type of reward system is very similar to the AIG system that caused problems within their company. ->The BBB should implement a new reward system. Maybe a system that provides rewards based on the pitching of memberships to potential business. Employees should be rewarded regardless of if the sale goes through or not.

`` Wise Men Learn By Other s Harms Fools By Their Own...

Allyson Morgan English 251 Mrs. Vance 28 November 2016 Poor Richard’s Almanac â€Å"Wise men learn by other’s harms; fools by their own† (Franklin). Benjamin Franklin insists that wise people learn from others and their mistakes while fools learn from their personal understandings. The purpose of Poor Richard’s Almanac was to teach people things from another person’s experiences. Poor Richard’s Almanac was written by Benjamin Franklin under the pseudonym of Richard Saunders. It was written as a yearly published almanac in 1732 and was finally completed in 1758. I chose this piece of literature because I find it very interesting and there is a lot of real-life scenarios to learn from it. It is still relevant today because Benjamin Franklin was one of the most notorious men of the American Revolution. The literature found in Poor Richard’s Almanac is still useful in modern day situations. It is still studied in schools today because of the impact that it had on people’s lives. In the piece of literature, Poor Richard’s Almanac, Benjamin Franklin included a variety of information, satire, and aphorisms. Significantly, Benjamin Franklin is one of the oldest and arguably most brilliant of the Founding Fathers (Queenan). Franklin was born in Boston, Massachusetts on January 17, 1706. He was the son of Josiah Franklin and Abiah Folger along with 17 other brothers and sisters. He attended Boston Latin School at the age of eight for less than a year and was sent to George Brownell’sShow MoreRelatedwisdom,humor and faith19596 Words   |  79 PagesFour Believers Who Stressed Humor: Kierkegaard, Chesterton, Niebuhr, and Auden 27 Conclusion 34 Copyright  © 2011 by Walter G. Moss WISDOM, HUMOR, AND FAITH: A HISTORICAL VIEW â€Å"And frame your mind to mirth and merriment, / Which bars a thousand harms and lengthens life.† Shakespeare, The Taming of the Shrew, Induction, Scene 2. â€Å"Laughter without a tinge of philosophy is but a sneeze of humor. 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