Thermodynamics Lab Essay Example for Free

Thermodynamics Lab Essay Purpose: The purpose of this lab is to determine the identity of an unknown metal, and to prove whether the laws of thermodynamics hold when determining this identity. Using the accepted specific heat of water (4186 J/kg  · oC), heat flow between two different sets of water though the conduction of an unknown metal can provide useful data in determining the identity. The heat transfers can be calculated to approximate the specific heat of the unknown metal. When heat is transferred to an object, the temperature of the object increases. When heat is removed from an object, the temperature of the object decreases. The relationship between the heat (q) that is transferred and the change in temperature (DT) is: q = mCDT = mC  · (Tf Ti). After the specific heat of the metal is found, it can then be compared to known specific heat values of various metals, which in turn will allow for a probable identity of the unknown metal to arise. Hypothesis: The identity of the unknown metal is aluminum. This can be inferred from the unknown metals appearance, which resembles aluminum it its color, light weight, and luster. The laws of thermodynamics will hold when determining the unknown metal. The laws of thermodynamics must apply in order for heat flow to occur during the experimentation. Materials: The materials used in the lab were two calorimeters (insulated, Styrofoam containers), an unknown metal in the shape of a wide horseshoe, two thermometers, a balance, water, a beaker, and a Bunsen burner. Procedure: 1.Measure the weight of the Pyrex beaker, and then pour 200 mL into the beaker. Weigh the beaker filled with water. Record both weights to find the weight of the water by itself. Let this mass of water be labeled 1. Next, pour the water into one of the calorimeters and take the temperature of it. This temperature should be the room temperature and the same as the unknown metals temperature. 2.Pour 200 mL of water into the beaker and weigh the beaker filled with water. Record the weight. Let this mass of water be labeled 2. 3.Use the Bunsen burner to heat up the 200 mL of water in the beaker to 75o C. Then pour the hot water into the other calorimeter. 4.Set-up the calorimeters by placing the thermometers and the unknown metal in their specific places. 5.Record temperatures of both calorimeters every minute until thermal equilibrium is reached. 6.Clean and return all materials and dispose of any waste. Conclusion: The graph indicates that heat flow did undergo during the experimentation. The cold water increased in temperature, while the hot water decreased. The two liquids underwent changes in temperature until they both reached thermal equilibrium. This thermodynamics law is called the Zeroth Law of Thermodynamics. This law basically states that two bodies will naturally reach thermal equilibrium when in contact. The First Law of Thermodynamics was obeyed as well. Only heat from the warmer body went to the colder body. Heat only travels in one direction, from the hot to the cold, as can be seen from the graph. My hypothesis of the unknown metal being aluminum was correct. The results of my lab showed that the unknown metal was aluminum, and later it was said that the metal had in fact been aluminum. The lab calculations went well. The values were somewhat disparate however. For example, the specific heat was found to be 1200  ± 110 J/kg  · oC, but the actual specific heat of aluminum is 900 J/kg  · oC. This difference can be attributed to the imperfect insulation of the calorimeters. Some heat must have been lost during the experiment, which may have caused a distortion in values as a result. Also, the metal was exposed to the outside air, and likely lost some heat to the air. Overall, the lab was a success. The only improvements I would suggest are to have better insulators and more precise instruments. Better insulation would yield improved results. The metal, which was transferring the heat, should have been insulated so that heat could not escape during the heat transfer. More pr ecise instruments would cut down on the uncertainties, which then would allow for better and more accurate results.

A chiropractic office Essay Example for Free

A chiropractic office Essay A chiropractic office lost all of its computer data, and I was hired for the amount of time that it would take me to type up all of their hard copies into their new computer system. It took me a total of two weeks to type up a three-foot stack of papers. The skills required were mainly typing and editing skills, and sometimes I had to be able to read the doctor’s handwriting. I felt that no further motivation was necessary regarding skill level, since I am a quick, accurate typist and I enjoyed learning about various alternative health remedies as I went along. I completed the entire stack of papers by myself, and I found the solitary work to be relaxing and enjoyable. I felt that my job was, indeed, meaningful since many of the papers were standard legal forms or alternative health information or recipes for kidney stones or other ailments. At any given point in time, I was either directly assisting the chiropractic office or the patients thereof. Since I was a friend of the chiropractor and a trusted member of the staff, I was given full autonomy to complete my assignment on my time, at my discretion and on my schedule. That motivated me to do a stellar job in a short amount of time. Afterward, everyone was impressed by the quality of work I did, but especially the short amount of time in which I did it. I felt satisfied and like I accomplished something worthwhile and in an efficient manner. Â  I will use this same chiropractic office as my next example. An example of strategic planning is when the chiropractor refers the patient to their next appointment, telling them what needs to be checked up on or corrected next time. In this manner, he is not leaving it up to the patient to decide, but recommending a timeframe for when they should return. In this manner, for as long as the patient needs his help, he is providing himself continuing clientele. An example of functional-level planning is when he hired me to type up his paperwork or hired a receptionist to take care of patient evaluation and scheduling of appointments. In this manner, he is allowing himself to give the patients his full, undivided attention which will heal them faster, and allocating other work responsibilities to other people. In this way, he remains organized and punctual. The differences in decision making between the chiropractor and, say, his receptionist is drastic. If the receptionist were to determine when a patient was finished with treatment, a patient could be over-treated or under-treated and lose a lot of money, which would be spread by word-of-mouth and cost the business lots of money. And if the chiropractor made it his responsibility to take care of the tax reports, he would spend hours away from his treatment table, when he could be taking walk-ins or checking the status of a patient’s healing.

Matters Of Fact Relations Of Ideas Philosophy Essay

Matters Of Fact Relations Of Ideas Philosophy Essay Humes fork has two kinds of judgments. The one prong is known as matters of fact. Matters of fact are known to be true on the basis of experience. They are usually empirically verifiable and contingently true. That is, they vary based on the world. An example of a statement that Hume would classify as a matter of fact is The sun rose today or I exist. The other prong on Humes fork is called relations of ideas. Relations of ideas are known to be true independent of experience. They are self-evidently true. That is, if someone were to deny it as true, then they would be in contradiction. An example of this is All fathers are male. b. Define these 3 kinds of judgments identified by Kant, and give one example of each: a priori analytic, a posteriori synthetic, a priori synthetic. Believing that Humes fork was not fully correct, Kant came up with his three types of judgments. The first of which was the a priori analytic. A priori analytic statements are similar to Humes Relations of Ideas. That is, these statements allow one to gain knowledge without appealing to any particular experience as well as they are not expansive but explicative. In other words, they are self-evidently true and if one is to deny this, they would be in contradiction. An example of this would be A bachelor is an unmarried man. That is, the validity of this statement is tautological. A second type of Kantian judgment is known as a posteriori synthetic. A posteriori synthetic judgments are similar to Humes Matters of Fact. They are a posteriori because they are contingent facts that usually appeal to some particular experience to be known. They are synthetic as they are expansive, as they expand on the subject. An example of this kind of judgment would be Some triangles are isosceles or Ryan is wearing a red hat. Both of these require some experience that would allow for one to determine the truth value of the statements. Another way to think of examples of synthetic a posteriori statements is by thinking of possible worlds. That is, a statement that is synthetic a posteriori would be one that you can imagine a possible world with it without causing a contradiction. An example would be the sun is yellow. Obviously we can agree that in this possible world it is yellow, however, in another possible world, the sun could be bright purple and it would not cause a contr adiction. A third type of Kantian judgment, which Kant adds to correct Hume, is known as synthetic a priori. This doesnt relate to any of Humes fork. As previously mentioned, it says a synthetic statement as it is expansive and its a priori they can be known without experience. It seems difficult to understand, yet this is what Kant brings in order to allow for metaphysics and even pure mathematics. An example of a synthetic a priori statement would be Every event has a cause. This is a synthetic a priori as we know it is true without having to experience it, but it is synthetic as it is expansive and not explicative. c. Briefly, what kind of judgment does Hume take mathematical claims, such as 7+5=12, to be? What kind of judgment does Kant take mathematical claims, such as 7+5=12, to be? Hume and Kant have different views when it comes to mathematical claims, such as 7+5=12. Hume would say that the statement 7+5=12 is a relation of ideas as it is a mathematical claim. That is, he views that if you deny 7 add 5 as the same as 12, you would be in contradiction. That is, 7+5 is defined as being equivalent to 12. Kant would have a differing view when it comes to mathematical claims. Kant would say that 7+5=12 is a synthetic a priori statement. This is because Kant feels that 7+5 does not contain the concept of 12. That is, you can think of the prior without the second, which is what makes Kant feel it is synthetic, but as with most math principles, they are not seen in the world and are considered by Kant to be a part of the laws of nature. Therefore, Kant views them as a priori. d. What is Kants answer to the question: How is pure mathematics possible? Kants answer to the question how is pure mathematics possible is a very long one. In fact, it takes up a large section in his Prolegomena to Any Future Metaphysics. He does this by explaining his Copernican revolution of space and time. Kant feels that space and time serve as indispensable tools that help arrange and categorize the images of objects imported by our sensory organs. Anything we see or hear would be useless unless our minds have some space and time to make sense of it. Kant, unlike Hume, wants it to be possible for us to have knowledge outside of experience. He writes if intuition must conform to the constitution of the objects, I do not see how we could know anything of the latter a priori. (pg. 516) Yet, Kant feels that pure mathematics is only possible if we allow for a synthetic a priori statement to exist. (pg. 555) That is, a priori intuition would allow for the appearance of objects to be possible to us. Kant feels strongly that pure mathematics is only possible because we can have intuitions of space and time as phenomena. Phenomena are things as they appear to us given how our thought and sense perception work. However, it is important to note that Kant feels that pure mathematical propositions are not just creations of the imagination, but they do exist in space and time. (pg. 557-8) This is very important to Kant as it is one of his huge additions to Humes Fork which eliminated metaphysical claims and even math and science to an extent. 3. Knowledge of Nature a. Briefly, what does Kant mean by the term experience? Kant uses many terms that require special definitions. One such term is experience. Experience to Kant is the combination of an intuition with a concept in the form of judgment. In other words, it requires concepts that allow us to express a necessary and universal synthesis of intuitions. They describe the synthesis of intuitions in consciousness in general. b. Briefly, how do judgments of experience differ from judgments of perception? Judgments of perception are only subjectively valid. That is, they hold good only for us as individuals as they narrate how things appear to us as individuals. In other words, they describe the synthesis of intuitions in ones own consciousness. An example of a judgment of perception is The tower looks small to me or I feel the warm stone, then I see the sun shining on it. A judgment of experience is one that is about, or directed to objects of experience. An object of experience requires concepts that allow us to express necessary and universal synthesis of intuitions. In other words, it describes the synthesis of intuitions in consciousness. That is, they describe how we view the world is in general. An example of a judgment of experience would be nature is the existence of things so far as it is determined according to universal laws. It is a truth which is not subjectively qualified unlike a judgment of perception. c. Why does Kant think that we can know a priori that All events have a cause? Kant thinks that we can know a priori that all events have a cause. An a priori statement is one that is true in terms of its meaning alone. In other words, the statement all events have a cause is a fact upon which experience depends. Kant felt that the antithesis, no event has a cause would not produce a contradictory or meaningless statement, proving that it is synthetic. And the original statement, all events have a cause is a priori as Kant felt it can be known without the need of experience. Kant wrote that the principles of possible experience are then at the same time universal laws of nature, which can be known a priori. (pg. 565) In other words, Kant felt that all events have a cause would be considered a universal law of nature which are known a priori. d. Give an example of a metaphysical claim that Kant thinks we are NOT entitled to make. Why would he think we are not entitled to make that metaphysical claim? A metaphysical claim that Kant thinks we are not entitled to make would be the soul is immortal. He feels this is because metaphysical claims are illegitimate when they use a priori concepts beyond the bounds of any possible experience. Kant writes examples can only be borrowed from some possible experience, and consequently the objects of these concepts can be found nowhere but in a possible experience. In other words, Kant writes that you cannot make a claim such as the soul is immortal without relating it to some possible experience and thus taking away the a priori concept.

The Destruction of the American Dream in Fitzgeralds The Great Gatsby

In The Great Gatsby, by F. Scott Fitzgerald, the main theme is most directly related to the American Dream. The American Dream is based on the idea that any person, no matter who they are, can become successful in life by working hard. The Great Gatsby is about what happened to the American Dream during the 1920's, an era when the dream had been corrupted by the relentless pursuit of wealth. The pursuit of the American Dream is the ultimate cause of the downfall of the main character, Jay Gatsby. Throughout the story, Jay Gatsby avoids telling the truth of his hard, ordinary childhood. He does this to keep his image and to save himself from the embarrassment of being in a state of poverty during his youth. His parents were unsuccessful people who worked on the farm, and because of this Gatsby never really accepted them as his parents. Jay Gatsby?s real name is Jay Gatz and he is from North Dakota. He changed his name to Jay Gatsby when he was seventeen years old, which was the beginning of his version of the American Dream. In all realities Gatsby arose from his Platonic view of himself, the idealistic self-view that a seventeen year old boy has of himself (Fitzgerald 104). Gatsby's embarrassing childhood is a major source of determination in his attempt to achieve the American Dream. It was in the army as a young adult when Gatsby first met Daisy. He initially loved Daisy because of her extraordinary house and because many other men had already been with her. Gatsby fell in love with Daisy, and in turn Daisy fell in love with Gatsby. ?Daisy was the first ?nice? girl that he had ever known?(Fitzgerald 155). Their love was an uneasy one at first for Gatsby to comprehend because he wasn?t rich by any standards and ... ...ramatic affirmation in fictional terms of the American spirit in the midst of an American world that denies the soul (Bewley 46).?Gatsby?s strong desire for wealth and Daisy, (the American Dream), prove to be the greatest reasons for his grave downfall. Works Cited Bewley, Marius. ?Scott Fitzgerald and the Collapse of the American Dream.? Modern Critical Views: F. Scott Fitzgerald. Ed. Harold Bloom. New York: Chelsea House Publishers,1985: 32-45. Bruccoli, Matthew J., Preface. The Great Gatsby by F. Scott Fitzgerald. New York: Simon and Schuster, 1995. Fitzgerald, F. Scott. The Great Gatsby. 1st ed. New York: Scribner, 2004. Print. Mizener, Arthur. ?F.ScottFitzgerald: The Great Gatsby.? The American Novel: From James Fenimore Cooper to William Faulkner. Ed. Wallace Stegner. New York: Basic Books, Inc., Publishers, 1965: 180-191.

The Effects of Printed Media on Gender Roles Essay -- Media Stereotypi

I will be looking at women’s 'to-be-looked-at-ness', and examining the representations of women as objects of the male gaze and male desires. In simple terms, a stereotype is the application of one (usually negative) characteristic to a whole group. The stereotype is an easy concept to understand, but there are some points you need to consider when looking at media representations with regard to stereotyping. For a stereotype to ‘work’ it needs to be recognisable to the audience and when so recognised, then judgements are made about the subject. If the stereotype is negative, then the judgements will also tend to be the same. The predictable thing about stereotypes is that they are predictable! They create a sense of order and also provide a sense of identity (even if it is a negative one!) Stereotypical judgements and stereotypical media representations can (and often do) lead to different treatments of groups by other groups, (sadly, often quite discriminatory). If we define ‘male’ and ‘female’ all we are doing is a biological classification, but if we think about the terms ‘masculine’ and ‘feminine’ we have to think about certain roles and lifestyles. Put simply, the words have very specific ideological assumptions of what is ‘natural behaviour’ for each sex. The portrayal of men and women in traditional roles is very prominent and also very contested in advertising. Characters, both male and female are constantly placed in roles, socially constructed to 'match' their gender. In other words, society has constructed (made) a set of ‘truths’ about what is the ‘right’ way for a man or a woman to behave. The media, of cou... ... adverts to highlight these changes. These reversals are, however, often portrayed in a sarcastic or less serious than in other adverts. Without these gender roles maybe society would have had an adverse effect on the media and what we portray as acceptable would in fact be outrageous. Why is the media so important? —One may ask. More often than not, it’s the way we get most of our information. Information we tend to think of as the â€Å"truth. Overall when looking at different types of media I got the general impression that women are portrayed in a worthless provocative manor. This was repeated in the same way across the whole range and always looked as if they were being exploited. Society have dictated to the media what they want to buy and see, all that’s left for the media to do is provide this product.

A Summary on the Essay of Kate Gubata: The New Feminism

The word feminism has generally and categorically been associated to an assembly and movements of radical groups who try to eradicate the male dominance in society, talking if not shouting, just to get their messages across.   These were the women in our grandparents’ time who have endeavored and strived to get their equal rights as a human being.   Today, it has been observed that women try to keep away from becoming branded as feminist to disassociate themselves to this type of bloc.   Feminism does not have to be exclusively defined to this category.According to Gubata (2003), a lack of interest among women to engage themselves in these activities is due to the misconceptions on the aims of feminism.   The real goal of the feminists’ today is to elucidate both men and women to convert equality into a reality. Anyone can be an active participant on this action and tackle significant feminists’ issues such as pay inequity, recent passage of the â€Å"ab ortion drug† and legal battles of homosexual marriage.Contemporary feminists are those people who have no fear in speaking their minds and in sharing their ideas as well as being open to ideas of others.   Women should not deny themselves the prospect of getting themselves involved in something they believe in.   Having a united voice means getting the aim stridently heard.The author emphasized on the encouragement of the people to get themselves involved in promoting the goals of feminists.   Take note of the groups in your community which you might get interested in then once you find it, enlist yourself and be prepared to take action.   You may have dissimilar and diverse feminist perceptions in the group but the eventuality of accomplishing your purpose is more apparent.REFERENCEMcCuen-Metherell, J.R. & Winkler, A.C. (Eds.).   (2003). Readings for Writers (11th ed.).  Heinle-Thomson Learning.

Good and Evil in Lord of the Flies and Animal Farm Essay

Good and evil themes, in some form, exist in practically every piece of literature ever written. It is found in literature as old as the Bible to newer stories such as The Hunger Games. It is no surprise to find this same theme in Lord of the Flies by William Golding and Animal Farm by George Orwell. Golding and Orwell explore good and evil to show what effect morality, or the lack thereof, has on society. Both Golding and Orwell believe through their own past experiences that evil corrupts people. To portray this, Orwell and Golding use similar ideas with their characters and plot to show how fragile the idea of civilization is for us all. In Lord of the Flies and Animal Farm, the theme of evil is obvious throughout the development of the characters. In Lord of the Flies, the primary character, Jack, is truly evil. Jack is a brutal boy and he performs many violent acts during his quest for power. The best example of this is when Jack encourages his tribe to participate in the slaughtering of the angelic Simon (Golding, 140). While the tribe is having a wild, demonic ceremony, Simon crawls out of the woods disorientated after suffering a seizure. Mistaking Simon for the beast, the crazed tribe, including Ralph, brutally rips Simon apart with their bare hands and teeth. Simon falls off of the cliff and onto the beach below, where his body washes out to sea. In comparison, evil is also prominent in the story Animal Farm. The character Napoleon is the essence of evil in Animal Farm. He is the very manipulative and dictator-like leader of the farm. He performs many unspeakable acts against his fellow animals, such as taking the milk and apples for himself (Orwell, 24). After taking all of the milk and apples, Napoleon gets Squealer, a pig that he uses for propaganda purposes, to explain his â€Å"reason† for taking the milk and apples from them. Squealer states that Napoleon needs to take the milk and apples from the animals so that Napoleon has strong brain power. Squealer continues to explain that Napoleon needs to have good brain power because â€Å"the whole management and organisation of the farm depends on Napoleon† (Orwell, 32). Squealer then elaborates even more and says to the animals that â€Å"it is for YOUR sake that we drink that milk and eat those apples†¦ Jones would come back! † (Orwell, 32). These reasons are not true, as Napoleon just wants the milk and apples because he finds them tasty and not because he needs them to manage the farm. Meanwhile, the other farm animals are left to go hungry. In an effective display of pure evil, Orwell and Golding are able to use Napoleon and Jack as villainous characters in an effort to show what happens to someone with no morals. In contrast, themes of goodness are harder to find, yet evident in the characterization of Lord of the Flies and Animal Farm. In Lord of the Flies, Simon is the epitome of morality. For example, he appears Christ-like as he helps the more vulnerable children of the tribe that the older boys call the Littluns. Simon helps the Littluns by performing tasks that they cannot do, such as â€Å"picking choice fruit from branches they cannot reach† (Golding, 50). In comparison, Animal Farm also has characters that reflect merit. Specifically, Boxer is one character that shows his goodness through his actions. For example, in the Battle of the Cowshed, he sees his fellow animals being injured, so he stops the fighting by kicking a stable-lad in the head. As a result of Boxer’s actions, the humans flee (Orwell, 36). Although Lord of the Flies and Animal Farm are both predominately full of evil themes, Golding and Orwell use themes of goodness in the characterization to give the reader hope that good just may prevail. Besides the themes of evil found in characterization, there are also the themes of evil in the plot elements of Lord of the Flies and Animal Farm. Towards the end of Lord of the Flies, Simon is murdered by the rest of the boys (Golding, 142). Simon’s death is specifically the point when the evil in the story triumphs over good . Up until the point of Simon’s death, Ralph and Simon are the only characters who still have good left in them. Since Ralph participates in Simon’s murder, all of the good that exists in Ralph is gone and the last of civilization dies with Simon. A similar evil is present in Animal Farm when Napoleon tortures and executes â€Å"traitors† of the farm. The animals that are accused of treason are tortured until they admit to their crime. Once they confess, they are executed (Orwell, 69). Most of the time, these animals are not even guilty. The animals live in a constant fear; they do not know when or if they will be accused of treason and then executed. By using themes of evil, both Golding and Orwell show that a lack of morality in society may eventually result in the collapse of civilization. In the same way, themes of good appear in the plot elements of Lord of the Flies and Animal Farm. Specifically, there is a time when Jack refuses to give Piggy any meat. Simon gives Piggy his share because he believes that it is unfair that Jack did not give Piggy any meat. When Simon does not give Jack the satisfaction of eating his meat, Jack then gets extremely angry with Simon and throws meat at Simon’s feet yelling â€Å"Eat, Damn you! † (Golding, 68). Simon still refuses to eat the meat. By his actions, Simon shows that even though they were living in uncivilized times, they could still remain kind to each other. Just like Lord of the Flies, Animal Farm also has themes of goodness in its plot elements. In particular, Old Major creates a spirit of kindness and enthusiasm at the farm during his famous speech. He uplifts the animals by singing them a song entitled â€Å"Beasts of England†. The song is about animals breaking free from human control and living independently. Old Major continues to show his concern for his fellow animals when he says in his speech that â€Å"all animals are equal† (Orwell, 11). As a result of Orwell and Golding using goodness in the plot elements of Animal Farm and Lord of the Flies, they are able to illustrate their point that one can choose to be kind, no matter their surroundings. Through characterization and plot elements, Golding and Orwell use good and evil in Lord of the Flies and Animal Farm to express their fearful feelings for society. They believe that if society loses their touch of purity and goodness then society will collapse. In other words, Golding and Orwell’s message to the reader is that it is human nature to sin and perform evil, and if society is not careful, it will eventually lead to the demise of civilization. Works Cited Orwell, George. Animal Farm;. New York: Harcourt, Brace, 1954. (11, 24, 32, 36, 69). Print. Golding, William. Lord of the Flies. New York: Coward-McCann, 1962. (50, 68, 140, 142). Print. View as multi-pages