Lab report - mass and acceleration free essay sample

As the speed of moving object and rate, the forces acting on the object, the mass of the object, and gravitational force of it might affect the acceleration, I will investigate about the mass of the object. Aim: I will try to answer the question â€Å"How does changing the mass of an object change its acceleration? † which is to find the relationship between the mass of an object and the acceleration rate. Hypothesis: I think that a trolley with a large mass will accelerate slower than a trolley with a small mass. Apparatus: Ramp, blocks, trolley, string, masses (50g, 100g, 1kg), pulley, stop clock, sticky tape, laptop, data logger, two light gates (Labeled diagram indicated below) (Photo by: â€Å"Yenka simulations – Road Science†, http://mathsci. werribeesc. vic. edu. au/science10/Yenka/10_trolley_acceleration. html) Method for collection of data: Independent variable Mass of trolley, steepness of the ramp Dependent variable Acceleration, time taken Constant variable Temperature, slope, starting point, ending point, etc. We will write a custom essay sample on Lab report mass and acceleration or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page 1. Fasten the pulley to one end of the ramp, and place it near the end of the bench 2. Put some blocks under the other end of the ramp. 3. Push the trolley gently. If it slows down and stops, put another block under the end of the ramp. If it speeds up, take a block away. Adjust the slope of the ramp so that the trolley keeps moving. Fasten the string to the trolley, run it over the pulley, and fasten the 50 g, hanging mass to  the other end. 5. Put two light gates between the trolley and the hanging mass. 6. Connect data logger to your laptop and to the two light gates. 7. Put 500g (5 x 100g) on the trolley. Use sticky tape to hold it on if needed. 8. Click the â€Å"start† button and let go of the trolley. 9. Record the initial velocity, the final velocity and the time taken from the trolley to travel from the first light gate to the second light gate on the provided table. Repeat each mass for three times and take an average. Making a fair test: I will measure the acceleration and the time taken by computer software and data logger. I will take 3 measurements (trials) for each trolley with different weight, and take the average time taken and acceleration. Method for control of variables: I will make it a fair test by making sure that the slope of every trial is the same, and no external variables such as temperature and the type of trolley will be changed throughout the experiment. Stage 2 – Data collection I’ve found out that an object with a larger mass will accelerate slower than an object with a small mass. My results strongly but not fully support my hypothesis. However, I’m not fully certain of my conclusion, as the number of trials for each trolley is only 3 times. The time taken by the trolley with 500g and 1kg is almost the same, which might not be fully accurate. Hence, I have doubts in my conclusion and therefore I don’t think that the reliability of my experiment is high. In scientific knowledge, we can explain this experiment by the Newton’s second law of motion, which clearly indicates the relationship between acceleration, mass, and force. The equation is: Resultant force = mass x acceleration, hence, we can see that the 3 of them varies in both direct and indirect ways. We can also say that the average acceleration = change in velocity/time taken. Stage 5 – Evaluation Despite the fact that my results support my hypothesis, I can still find some errors through my experiment. For example, as the trolley has weight itself, I forgot to deduct the weight of the trolley to make the result even more accurate. Assuming that the trolley’s weight is 100g, I should deduct 100g before doing the experiment. Luckily, I still managed to adjust the best data for my work. It’s essential to make the result accurate and fair, and by doing more trails and by getting more information, the results will be more accurate, and also more precise at the same time. I think that the experiment could be improved by doing it more times. Although doing it 3 times can already ensure its accurateness, however, we could still do more trials to enhance its degree of accuracy. Throughout the experiment, we had some hiccups in letting the trolley pass through the light gates. If I could do the experiment again, I would modify the positions of the light gates. Besides, we can still try to move the position of the ramp, in order to find more about the relationship between the height and the acceleration and time. In order to increase its accuracy and reliability, I would perform the experiment in some more different masses I have the chance, because by doing it more times in different masses, I could get a more comprehensive, a more

Spain all in spanish essays

Spain all in spanish essays Espaneos de la Bahà ­a de Biscat. Es el este del Ocano Atlntico y el oeste de las Islas de Balearic. Espas que la mitad del paà ­s se compone de monta Espal tiene un papel en normas de gobierno. El primer ministro es llamado al presidente del gobierno en Espas de 500 miembros. Espan dos sistemas del tribunal, civil y militar, los Jueces deciden todos casos. Juan Carlos lleg a ser Rey de Espal jugaron un papel magnà ­fico al cambio Espa Durante los dà ­as tempranos de Espa mucho del paà ­s. Ellos cultivaron y construyeron las aldeas y los pueblos. Algunos de estos pueblos desarrollados en las primeras ciudades en Espa a establece las colonias y llev un comercio que prosper. Celtics y los romanos vinieron tambin a Espa durante las guerras de Punic y les tom 200 a tambin Portugal. Los alemanes invadieron tambin Espan Muslims. La invasin comenz en 711. Muchas gente espa a ser Muslim como resultado de la ...

Responce lettr Essay Example | Topics and Well Written Essays - 2000 words

Responce lettr - Essay Example Therefore, the meaning family tends to be on an individual basis because each individual could be living in a unique household. The increase in divorce rates is relatively alarming and the changes in sexual preferences have influenced families to adopt different family structures across many of the civilized nations. The implication of this is that this concept is not a unique challenge because the occurrence of broken families applies in mostdeveloping and developed societies. However, parents have the responsibility of helping their children to understand that these challenges exist rather than leaving them to suffer because of the sour relationship that may exist between them and their estranged spouses. In this case, this response letter will seek to explain how best individuals can express themselves without harming the feelings of other family members using the Johari window of disclosure. Further, it will also focus on the ways of easing dialect tension that may exist between family members using the dialect tension theory and the possible ways of communicating with them in order to avoid such tensions in the future. 1. Self-disclosure As per this scenario, the advancements made in technology such as social media helped in establishing a relationship with a sibling from the father that abandoned his family years back.The challenge here is that how does one remain loyal to the family that provides them with shelter and the other necessities of life andalsoseek to establish a bond with siblings from the other parent without hurting their feelings. One feels as though they have the obligation to lay out the facts straight before both parties, but this has a high likelihood that one of the parties might be hurt in this process (Rotenberg, 2006). Essentially, this can be challenging to the self-disclosure aspect in which one feels that developing a relationship with a family that their parents do not approve of makes them disloyal and ungrateful. Self-disclos ure is the most advisable way of handling such a situation as compared to lying, secrecy, or making hints that may suggest disloyalty to family. However, no options for maintaining a healthy relationship between family members are without consequences, but the outcome has not been as severe in the event that one comes out clean about the situation. In this case, an individual seeks to know the other family members that they share a lineage with the mistakes committed in the past are hindering the prosperity of this newfound relationship. However, the secret conversations that began without intending any harm could have been the beginning of this stalemate, but this does not mean that anyone is to blame for this situation. In this case, the mother and the stepbrother appear to be of importance, but the question that begsis to what extent. There is also the opportunity to know the stepbrotherbetter and develop a lasting relationship or maintaining the good mother-child relationship th at has existed for a much longer time. In order to establish whether the self-disclosure process is worth the risk, it is pertinent to ascertain whether it is substantive to do so or whether it is worth the risk. On the contrary, the execution ofself-disclosure should be with caution especially on the sibling met via Facebook because their personality is still a mystery. The Johari Window model of self-disclosure 1. Open/ free

Response Paper on On Being an Atheist, by H. J. McCloskey From a Essay

Response Paper on On Being an Atheist, by H. J. McCloskey From a Christian Viewpoint - Essay Example While to some this position on face value may seem to have credibility, a careful analysis of the theories from a Christian perspective shows his arguments lacking. The first thing that strikes is McCloskey’s choice of beginning his discourse with a usual and chronically pleading argument that would appear to make sense and put the entire onus of â€Å"believing† or of â€Å"faith† on a human need to want to believe, rather than a spiritual analysis of why we do. McCloskey puts forth that many theists take the position that â€Å"atheism is a cold, comfortless position,†1, and quotes one Christian as saying, â€Å"It’s harder if you don’t believe in God.† 2 McCloskey’s argument, which he extracts totally from this position, is a tired one at best, tied to a humanistic era [the 1960s] that overly promoted, at the exclusion of the spiritual founded in the intellectual, the concept of science, be it the science of human psychology or otherwise. â€Å"Proof† is the buzzword, a strange choice since proof of this overriding human need to feel comfortable in an uncomfortable world has neve r been proven, but is itself founded on the â€Å"discoveries† suggested by psychologists and sociologists and hardly based in solid scientific irrefutable fact. Much of McCloskey’s so called scientific approach falls far short of anything resembling proof. Consider McCloskey’s cosmological argument as examined by Privette (2009). â€Å"McCloskey argued that the cosmological argument was an argument from the existence of the world, as we know it.    He stated that believing in an uncaused first cause of the universe is a problem because nothing about our universe forces us to that conclusion.†3 I agree with Privette and would use the following argument, as she has, with a few of my own thoughts added on the concept of contingencies. If

Introduction to Philosophy Essay Example for Free

Introduction to Philosophy Essay 1. What are the main branches of philosophy? Do philosophers have the same answers to the same philosophical questions? Why? Philosophy is a way of thinking about the big questions in life, from the existence of men to its morality. It is an activity which sharpens our reason. The word was coined by Greeks , meaning â€Å"the love of wisdom†. Philosophy can be divided into six big issues it is interested with. * First, the question about the nature of the world and the existence of Men which is under the domain of Metaphysics or also called Ontology. From the word â€Å"meta† which means beyond and â€Å"physics† which means physical it deals about beyond physical world- the spiritual. It also attempt to answer the ultimate reality of life, our reason of very existence, Who and what God is and, how everything relates to it. * Second, what are the right ways to think and build arguments which is under the field of Logic. It tries to distinguish the valid reasons from the fallacies. It also examines the different general forms that argument may take. It is primarily studied in the disciplines of philosophy, mathematics, semantics, and science. * Third, How do we know and how do we think we know which is under the area of Epistemology. From the Greek words †episteme† which means knowledge and â€Å"logia† which means study, it basically deals on how do we acquire knowledge and what is the basis for true knowledge. * Fourth, Ethics which generally centers on the morality of our actions. It differentiates wrong from right and studies character’s actions based in his intentions. This field of Philosophy is vital and applied to other disciplines such as business, medicine, science, robotics, and education. * Fifth, Issues about laws, liberty, rights, property and , politics fall under the Political Philosophy. It is also one of the sub-fields of Political Science. Its purpose is to lay bare the fundamental problems and concepts which frames the study of Politics. It also studies the great thinkers of the past which shapes politics such as Socrates, Plato, Adam Smith and Hobbes. * Lastly, Aesthetics which deals on what is beautiful. Mainly it tries to answer questions which deals in art- music, painting, poetry, and such. It attempts to distinguish what is beautiful, what has taste, and what has artistic value. Philosophy can also be subdivided into three specific categories which are, Philosophy of Mind, Philosophy of Language, and Philosophy of Science. These are branches which deal to questions their respective field of subject matters such as what exactly is a mind? how does language work? and Does science has responsibility to humanity? An Educator can ask a question to his students and would receive different responses . We can even expect complex answers to a simple question. It is because people view things in different perspectives, have different degree of intelligence, exposed to different environment, influenced by different people and ideas, and have personal insights and experiences which differ from one person to another. People thoughts varies and no idea can be of an exact match of another. In my opinion, Humans’ mind are like his fingerprint, We all have our fingerprints but its design- the curves and lines is unique in each individual. There might be similarities in ideas between individuals but in some point they contradict. For example, the two famous philosophers, John Locke and Thomas Hobbes both support the â€Å"Social Contract Theory† in which men enter a mutual agreement to surrender some of their liberty to authority in return of protection, both also, believe that men can exist without government and speak of its dangers in this kind of state-State of Nature. For Hobbes, the entire time that man is in a state of nature, he is in a state of war. He states that â€Å"if any two men cannot enjoy the same thing, they become enemies and in the way to their end†¦. endeavor to destroy or subdue one another† (Wootton, 158). Locke too points out risks, saying that without the â€Å"law of nature† everyone may execute decisions, leading to a state of war (Wootton, 290). However, despite of the similarities, Locke believes that people enter to social contract to seek peace and avoid the fear of death and living in State of Nature is brutish and chaotic while Hobbes believes that State of Nature is important and do exist in some ways such as among governments and leaders. Locke’s view on State of Nature is pessimistic in contrast to Hobbes which he thinks has some potential benefits. Philosophers do not have the same answer to a certain question. Each philosopher present different examples and take different stand on a certain idea. 2. Why has philosophy lost importance in the priorities of contemporary man? Philosophy had the paramount role during the ancient education. It created great and wise thinkers such as Socrates, Plato, and, Seneca and influenced bright minds such as Descartes, Adam Smith, and Karl Marx. Although the subject Philosophy is only introduce in higher level of studies in modern years, it diffuses its idea and being applied to core subjects such as mathematics, science, and language. Philosophy is still vital in learning until today. The decreasing value given in philosophy arises in the way modern man receive and gather information. Core subjects like Science should teach us to Inquire, to Analyze, to Think, and to Search- which are roles of philosophy but, Educators and with the convenience at reach, Students are being spoon-fed with facts from books and other resource materials instead of encouraging them to explore. They are bound with rules and regulations without giving them a chance to ask why they should follow orders. Students fail to analyze things because most Educators present facts and inculcate it to them through rote memorization instead of validating it. Learners learn facts but never learn to reason. They become man of knowledge but never become man of substance. The decreasing importance of philosophy in modern days is ascribed partly, to us Educators for failing to emphasize and apply its essence to the students. We teach the students to be dependent on the facts provided in books and internet, for we believe that it offers a vast amount of information forgetting that one’s mind can offer limitless insights on a certain topic. 3. Why should philosophy be restored to its former prominence in the priorities of contemporary man? Philosophy is vital in man’s learning and improvement. Giving answers to man’s most perplexed questions or even to the simplest question that bother us gives us sense of satisfaction and purpose in life. In modern times, Philosophy is essential in choosing decisions that has impact on our future such as career path, religion, core beliefs, and even to work or business. Philosophy should never be undermine and be restricted to as a mere subject. It is a way of thinking and essential in making a wise decision hence, should be integrated in daily living. 4. How does western philosophy differ from the eastern? In General, Western Philosophy promotes individualism and more interested in finding and validating the truth while Eastern Philosophy is more interested in finding the balance within ones self in order to live in harmony with others and thus promoting collectivism. Also, East philosophy which emerged in China is spiritual in nature as opposed to West which starts from Greece is naturalistic and subject to research. Individualism of the West gives meaning to the worth a person as an individual. It gives stress on liberty and self-reliance. â€Å"Man is directly a natural being. As a natural being and as a living natural being he is on the one hand endowed with natural powers, vital powers — he is an active natural being. These forces exist in him as tendencies and abilities — as instincts. On the other hand, as a natural, corporeal, sensuous objective being he is a suffering, conditioned and limited creature, like animals and plants. A being which does not have its nature outside itself is not a natural being, and plays no part in the system of nature. A being which has no object outside itself is not an objective being. â€Å" Marx, Critique of Hegel’s Philosophy in General (1844). â€Å"Self-expression is individuality, and our individuality is our self, which ought to be our chief concern† Ernest Dimnet (1928) The Art of Thinking p. 250 â€Å"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. † Henry David Thoreau, Walden: Or, Life in the Woods (1854), chapter 18, p. 210. Collectivism of the East emphasizes the interdependence of individual among others. â€Å"If I am walking with two other men, each of them will serve as my teacher. I will pick out the good points of the one and imitate them, and the bad points of the other and correct them in myself. † â€Å"Without feelings of respect, what is there to distinguish men from beasts? † Confucius â€Å"A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves. † â€Å"Being deeply loved by someone gives you strength, while loving someone deeply gives you courage. † Lao Tzu â€Å"The highest education is that which does not merely give us information but makes our life in harmony with all existence. † Rabindranath Tagore.

Amyotrophic Lateral Sclerosis :: Biology Essays Research Papers

Amyotrophic Lateral Sclerosis Have you ever had an experience of morning paralysis where you see yourself lying down, and you think you're awake so you try to get up, but suddenly you realize that you can't move? I have, several times. They have been the most frustrating and scariest times of my life. As I try harder to move, concentrating all my energy into moving one arm, the deeper I seem to be sinking in this indescribable feeling of entrapment. I hear the people outside my room and try to get their attention by screaming. Instead, I hear a soft slurred sound coming from my throat. Then I start to panic. I can't breathe! My energy is depleted and my body is exhausted. Eventually, I start to relax. The first time this happened to me, a mosquito landed on my big toe while I was thinking of what to do. Without being consciously aware of it, I move my big toe. My body jerks and suddenly I can move! Thank God for the mosquito, otherwise I wouldn't have known that all I had to do was move my big toe towards me. Eve r since, whenever I would have another one of these experiences, I would relax and gently move my big toe towards me. If you've had one of these experiences, then you've probably had a glimpse of how it feels to have a fully developed amyotrophic lateral sclerosis. Amyotrophic Lateral Sclerosis (ALS), more commonly known as Lou Gehrig's disease, is a neurological disorder that involves the degeneration of motor neurons. A-myo-trophic is derived from the Greek language. A connotes something negative or none. Myo means it has something to do with the muscles. Trophic translates to "nourishment". (1) The term Lateral is attributed to the parts of the spinal cord that ALS usually affects. (2) The scarring that results from the degeneration of these neurons and nerves in the spinal cord is known as sclerosis. (2) In 1941, Lou Gehrig, a famous baseball player, died of ALS. His name has been associated with this progressive fatal neuromuscular disease ever since. (3) Another person whose name is associated with this disease is the French neurologist, Dr. Jean-Martin Charcot. He was the first to identify that motor neurons from the spinal cord are the main part of the nervous system affected by this disease, in 1869. For that, amyotrophic lateral sclerosis is also known as maladie de Charcot.

My First Summer In The Sierra By John Muir Essay

John Muir’s view of the sierras was filled with the high, cool, and green pastures of the peaking mountains, with forest belts that show the melting snow, and with shining streams to be crossed. The foothills show bushes, trees (usually oak trees), and slate. There were Sabine pines that peak from the southwest side, along small fields and vineyards that were marked by falls and streams. The Horseshoe bend was really glorious. As pictured, Horseshoe Bend came full in sight—a glorious wilderness that seemed to be calling with a thousand songful voices. Bold, down-seeping slopes, feathered with pines and clumps of Manzanita with sunny, open spaces between them, make up most of the foreground; the middle and background present fold beyond fold of finely modeled hills and ridges rising into maintain-like masses in the divine landscape-countenance are so burned into mind and heart they surely can never grow dim. This type of view had a great impact on the flock of sheep, as it enjoyed plenty of green grass. This is shown in the following lines: â€Å"The sheep, now grassy and good-natured, slowly nibbled their way down into the valley of the North Fork. † The surrounding beauty did not only have strong impact on the flock but, most of all, to Muir: How deep our sleep last night in the mountain’s heart, beneath the trees and stars, hushed by solemn-sounding waterfalls and many small soothing voices in sweet accord whispering peace! And our first pure mountain day, warm, calm, cloudless, –how immeasurable it seems, how serenely wild! (Muir 1998, 32) For Muir, the appeal of the mountains seemed to converge down to his very soul†¦ leaving him moments of glory that touched his mind and heart for the majestic scene of nature. Later in life, Muir protected the Hetch-Hetchy Valley in a seven-year environmental struggle that centered on gaining water rights on the said valley. Muir correctly predicted that the building of a dam would be unsightly to have a lake around the perimeter; yet his struggle ended up to be a breakdown, with the signing of the Raker Act in 1913. BIBLIOGRAPHY â€Å"Hetch Hetchy Valley. † Wikipedia Online Encyclopedia (2008). Database on-line. Muir, John. My First Summer in the Sierra. Boston, MA: Houghton Mifflin Books, 1998.