Cart Lab Report free essay sample

Hanging at a Constant Determining the effect mass has on acceleration Block 5 11/25/12 Purpose: The purpose of this lab is to determine the effect of additional mass added to a cart’s existing mass, without changing the applied force, on the acceleration of the cart. We will test this effect by hanging a constant mass to a cart and use a computer program, LoggerPro, to calculate the acceleration which is expressed through the slope of the graph. The cart’s initial mass is 500 grams which we change by adding more weights in order to see a difference in acceleration. Some basic background information needed for this experiment is first, and foremost, Newton’s Second Law of Motion stating: The acceleration (a) of a body is parallel and directly proportional to the net force (F) acting on the body, is in the direction of the net force, and is inversely proportional to the mass (m) of the body, i. We will write a custom essay sample on Cart Lab Report or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page e. , F = ma. We must also know that weight is a force, we use the weight of the cart and the hanging weight as the forces needed to determine acceleration. The bigger the mass the more force required to create the same amount of acceleration. We have to assume that the length of the track the cart traveled was long enough to accurately calculate the acceleration. Hypothesis: If the mass of the cart increases while keeping the hanging mass (applied force) constant then the acceleration of the cart will decrease because more applied force is needed to pull a heavier mass (cart). This will occur in order to follow Newton’s Second Law of Motion and the equation F=ma. Materials: -weights -a cart -motion sensor LoggerPro program Procedure: 1. Chose a constant hanging mass/applied force (200g) . Attach the hanging mass to the initial cart (without additional weights) 3. Set up Logger Pro and motion sensor 4. Press start and when it beeps let the cart go 5. Stop cart near the end so it doesn’t fall off the table 6. Calculate the slop by highlighting the linear part of the graph, (not any part where it stands still). The slope is equivelent to the acceleration 7. Add a weight to the cart and repeat steps 4-6 for 4 a dditional masses. Hanging Mass (grams)Cart Mass (grams)Acceleration (m/s^2) 2005002. 812 2006002. 369 2007002. 51 20010001. 553 20015001. 116 Data Analysis: The acceleration is directly proportional to the mass of an object. As the cart mass increases then the acceleration decreases. This follows the F=ma formula stating that the acceleration is proportional to the force/mass of an object. The graph proves that when the mass increases then the acceleration decreased because the Force was kept constant but more was needed to move a larger mass. Error Analysis: Some errors that could have occurred may have been the result of a too short track. The calculations may have been inaccurate because it was limited to only about 2 meters and a few seconds. The lack of time and distance could easily influence the calculations and made more room for human error. Also letting go of the cart at the exact time each time may have caused human error because different people were letting it go and stopping it. The starting points and ending points on the graph also may have also changed the slope (acceleration) because a few points before or after would affect it. Conclusion: My data supports my hypothesis stating that if the the mass of the cart increases then the acceleration decreases due to Newton’s law of motion stating that the larger the mass the more force is needed to reach the same acceleration. When the mass was increased from 500 grams to 1500 grams the acceleration decreased from 2. 812 to 1. 116. The experiment would be better if given extra time for recording the acceleration, that would be more accurate and hopefully have an exact linear relationship. Also taking more trials would be beneficial to the experiment to eliminate any human errors.

The Benefits and Risks of Adolescent Employment free essay sample

College is more than an institution for learning. It is a gateway; a portal through which one makes the transition from adolescence into adulthood. In college, you gain knowledge with which you start a career. You gain responsibility with which you begin to live on your own. Finally, you gain experiences, memories, and friendships which remain with you for a lifetime. But as the saying goes, No pain, no gain, and by that I mean severe financial pain. An average college tuition can be anywhere starting at $100,000.00, and that is more than what the average student can afford. Unfortunately, it is also more than what some of the above-average, the extraordinary students can afford. If the United States of America followed Canada and Great Britain, whose colleges are all free, there would be some small consequences, but a much bigger reward.To begin, as Adlai E. Stevenson once said, There was a time when a fool and his money were soon parted, but now it happens to everybody. We will write a custom essay sample on The Benefits and Risks of Adolescent Employment or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page This shows how in the recent economic turmoil, many people are losing investments, jobs, and as a result, their money. Nevertheless, the colleges are just as expensive as ever. There are many people in the country who have the necessary test scores, abilities, and other qualifications needed to apply to colleges, but lack the wealth to pay for the tuition. The free scholarships that some associations offer are most likely hard to earn, and with strings attached. If colleges were free, any of these future students could establish a future for themselves, and the American citizens would be a much more educated populationMoreover, college is a life-changing experience and every child should have the chance to go. College gives, besides education, responsibility and important social skills that one needs later in life. It is a way for people to begin living individually, and on their own, but without the responsibilities associated with a house or a job. More importantly, you develop strong friendships, and skills such as how to make a good first impression. None of these should be deprived to someone worthy, but without financial stability.To summarize, all colleges in America should be free to the people, even if taxes should rise, because that is better in every way. College is a wonderful experience and no one should miss out on the time of their life.

Bright Shining Lie Essays - Vietnam War, John Paul Vann,

Bright Shining Lie A Bright Lie Shining: John Paul Vann and America in Vietnam Neil Sheehan has used this novel to tell the story of the Vietnam conflict utilizing the perspective of one of its most respected characters. This is the story of John P. Vann who first came to Vietnam as a Lieutenant Colonel in the Army and later returned as a civilian official. It is the story of his life from the beginning to the end. It is also Vietnam's story; it offers clear reasons for the conflict, and why it was such a disaster for all those involved. Vann arrived in Vietnam on March 23, 1962 as part of the new U.S. Military Assistance Command Vietnam. He became a chief advisor to an ARVN infantry division. His duty was to advise his Vietnamese counter part, but he officially had no power over any ARVN troops. It was this situation that became a major point of conflict between him and those who were running the war. During his first stay in Vietnam, Vann came to the conclusion that the U.S. could not win the war the way it was being fought. He decided to try and change the way things were. He gathered data and submitted detailed reports to those in charge of the actual conditions and state of the war. However, those above him either ignored the reports or destroyed them, because they could not believe that anyone could stand up to the might of the U.S. Reports that were sent to Washington were often dressed up to make things appear better than they were. No deliberated plan to misinform the government was ever uncovered, the generals simply believed that eventually things would go their way and they didn't want to alarm anyone. Vann learned of this practice and decided to start using the press to get his ideas out, in hopes that someone would listen and fix the problems. People listened, but high-ranking officials repeated denied his claims and informed the President that he had nothing to worry about everything was going fine. Vann left Vietnam and retired because there was little chance of advancement for him. Almost two years after he left Vietnam he once again returned, but in a civilian role. He was to help with the pacification programs that were developed to reduce the Viet Cong's presence in South Vietnam. Once again the problems with the way the U.S. was fighting became clear to him. This time he was in a little bit better of a position to change things. He had spent his years away from Vietnam developing his connections and reputation. However no real action was taken until 1968, after the Tet Offensive showed just how ineffective the war of attrition was. When Nixion took office he was looking for new ideas. John's ideas were looked at, and partially adopted. He called for the U.S. to take complete control of South Vietnam in order to make ARVN troops more effective. This idea was doomed to fail however, because most people viewed that step as to close to colonialism. So once again his ideas were ignored. John Vann died on June 6, 1972 in a helicopter crash while in Vietnam. This was just a general overview on how the book addresses Vann's role in Vietnam. Neil Sheehan was a reporter during the war, and like many other people came to believe Vann was the only person with his head screwed on straight. The reporters who knew him often described him as their bible because of his understanding of the situation. This above all is a work of history, it covers Vann's childhood, the Korean War, World War II, and even a little bit of World War I. Sheehan uses the information from all these sources to clearly spell out why things occurred and the reasons why people behaved the way they did. The sheer volume of information contained in this novel is astonishing. I found it difficult to absorb and analyze all of the information. So in the sections to come, I plan to address specific parts of this novel and relate them to what we have discussed in class so far. The title A Bright

Free Essays on Starry Night

â€Å"The Starry Night,† by Vincent Van Gogh is an example of an expressionist’s perspective of an unusual, chaotic, star-studded night, above a small town located in the middle of a hilly landscape. At the bottom left of the painting, pressed up close, there is a dark, flame-like, tree that twists upwards into the sky, almost as if to divide the heavens. In the center of town, there is church that stands out from any of the other structures. The top steeple just barely pierces the horizon like a tiny needle, with the vastness of the rolling sky. Many artists have different definitions for the word line. It can be said to be a continuous mark made by a pencil, or a brush applied to a surface that is used to define a shape or represent a contour. Lines can be drawn in numerous different ways also. A few of the different ways a line can be drawn are thick or thin, light or dark, straight or curved, heavy or dark, and slow and fast. With these different drawing techniques, artists can evoke a certain emotion or present a certain mood about a painting. Van Gogh paints the sky and the tree in bottom left with overlapping, quick, and curving strokes that create a great sense of dynamic, swirling motion. He paints the hills and the smaller trees that line the town with a similar but more gentle, thinner brush strokes that differentiates them from the sky and the tree in the foreground. Van Gogh paints the town in straight, diagonals and horizontals, and does not pays much attention to small detail. The small yellow lights in the buildings are all square or rectangular in shape, in contrast to the stars above. The church is the only building that has actual planes of color and complex outer structure. As far as color is considered, blue and purple pretty much dominate the painting. In the sky, the moon itself is a yellowish orange color, while the two spiraling bands in the sky are greenish-blue. The painting seems to flow f... Free Essays on Starry Night Free Essays on Starry Night â€Å"The Starry Night,† by Vincent Van Gogh is an example of an expressionist’s perspective of an unusual, chaotic, star-studded night, above a small town located in the middle of a hilly landscape. At the bottom left of the painting, pressed up close, there is a dark, flame-like, tree that twists upwards into the sky, almost as if to divide the heavens. In the center of town, there is church that stands out from any of the other structures. The top steeple just barely pierces the horizon like a tiny needle, with the vastness of the rolling sky. Many artists have different definitions for the word line. It can be said to be a continuous mark made by a pencil, or a brush applied to a surface that is used to define a shape or represent a contour. Lines can be drawn in numerous different ways also. A few of the different ways a line can be drawn are thick or thin, light or dark, straight or curved, heavy or dark, and slow and fast. With these different drawing techniques, artists can evoke a certain emotion or present a certain mood about a painting. Van Gogh paints the sky and the tree in bottom left with overlapping, quick, and curving strokes that create a great sense of dynamic, swirling motion. He paints the hills and the smaller trees that line the town with a similar but more gentle, thinner brush strokes that differentiates them from the sky and the tree in the foreground. Van Gogh paints the town in straight, diagonals and horizontals, and does not pays much attention to small detail. The small yellow lights in the buildings are all square or rectangular in shape, in contrast to the stars above. The church is the only building that has actual planes of color and complex outer structure. As far as color is considered, blue and purple pretty much dominate the painting. In the sky, the moon itself is a yellowish orange color, while the two spiraling bands in the sky are greenish-blue. The painting seems to flow f...

Imperialism,'Race' and Development Essay Example | Topics and Well Written Essays - 2500 words

Imperialism,'Race' and Development - Essay Example Even though it is said that Colonialism involves the colonization of a country of dark skinned people by a lighter-skinned people, it is not so always. We also come across different countries being subjected to slavery by people of the same origin (Issues of race and imperialism). The world has gone through these stages of development and each stage has left its mark on the face of earth. While we study development or human development, a basic knowledge of these words and the process are necessary to understand their influence on the difference between nation state. To consider and understand the influence of development we should strive to understand about nation states, how individual nation states were formed and how the world developed to its present form. We can use the term ‘development’ to trace the formation of the world order till the end of twentieth century and then turn to ‘human development’, which was a term used only by the end of twentieth century (Coopper.1999). The development of a nation is a very complex multi-faceted notion. It is a much broader concept than income and national GDP. The rate of growth of income of individuals, especially the common working class can be considered as a judge of progress of economies over time. It includes what people with diverse and broad expectations, of the â€Å"good life† that each society envisages for itself. Even though the concept includes growth of income level and economic growth, it can go well beyond these as well. The changes should not only be on the large scale it should also involve whole scale social and economy wide transformations (Haq.2009). The order in the modern world is established by nation states. States are the law makers; they make sure that these are observed and breaking of the law is also the concern of the State. Markets are under the control of states, currency is managed and its value is controlled by the State in both

National culture and management style Essay Example | Topics and Well Written Essays - 3250 words

National culture and management style - Essay Example It has been recognised that the managers as well as the employees in distinct cultures tend to introduce the codes of behavior as well as norms related to their own cultures in their workplace. The organisational processes as well as the managerial practices tend to be shaped with the assistance of these norms as cultural values. It is because of these reasons the organisation tends to implement numerous management practices. The national cultural values are discovered quickly, held quite deeply and can be altered slowly over the period of generation (ITAP International, 2012). Cultural participation is quite higher among certain groups of United Kingdom. The rate of participation tends to be quite higher among those in the upper socio economic groups along with the least deprived areas of England. The structure of involvement with the culture as well as sports alters widely in terms of region, there are few regional trends. It has been noted that in the North East of the UK there has been rise in the amount of people visiting museums, archives, galleries and heritage sites. However, the ratio of people visiting libraries remained steady. The phenomenon took place alongside an extensive fall in library visits in most of the other regions (National Statistics, 2011). It was since January to December 2010, nearly 34.8 per cent of the adults had involved themselves in culture digitally which had risen from 2008/2009. By the term ‘digital participation’ it can be comprehended as visiting a museum or gallery, theatre or concert, library or records w ebsites of offices for any purpose except buying tickets (National Statistics, 2011). Furthermore, it was observed that from January to December 2010, 72.4 percent of those who were between 16 to 24 years old had been observed to perform active sports, and this statistics had fallen from 2005/2006 (National Statist

Water cooler Essay Example | Topics and Well Written Essays - 250 words

Water cooler - Essay Example anizations by providing information that theft in organizations in the recent past has lead to a great loss of organizations resources to a tune of over $200million each year. The most recent form of theft identified is called ‘sweethearting’, and this is where employees give products to clients away for free to loyal and preferred customers. This is common with employees at the exit like cashiers. The article relates to the topic since it tends to enlighten organizations on how to handle its resources to prevent waste, it also shows how the US economy is affected by the losses from the bad Human Resource practices i.e. $200million loss each year. To address ‘sweethearting’, for example there are both short term and long term measures. The short term measure as per the article is educating the employees on the ramifications of the act on both the employee and employer and the ethics behind it. The long term solution is the employment of thorough recruitment, well screened. Screening question should focus on employee social acceptance, risk taking and ethics. This makes sure that the right click of employees is recruited for employment. An example of water cooler talk was that on the article examination.com about Frank Gore’s of San Francisco 49ers team unhappy state and need for another contract even after being involved in many games. The head coach refused to act on water cooler