Investigate the Strength of Straw Essay Example

Investigate the Strength of Straw Essay The purpose of this experiment is to investigate the relationship between the number of straw used and the strength of straw when weigh is constant. First and foremost, experiment was started by using one straw. The initial reading from the pointer was taken before the masses were suspended. Then, the slotted mass carrier together with constant masses in detail, 1000g, was suspended at the straw. As the result, the pointer will give the new reading. That reading was taken as the final reading. Step 2-5 was repeated for vary number of straws. Based to the theory, when we stretched it, we are trying to overcome the intermolecular bonds between the molecules. At the same time we are also trying to change the position of molecules that are held together by the intermolecular bonds. With vary number of straws; its strength also will increase. What we realized after conducting this experiment is once the number of straw increases as the result the length of stretched straw will decrease due to the constant weigh. While, when the length of stretched straw decreases; the strength of straw will increase. This is mean; the number of straw used is proportional to the strength of straw when weigh is constant. Actually we decide our hypothesis based to the theory below; While for the straw itself, when we stretched it, we are trying to overcome the intermolecular bonds between the molecules. At the same time we are also trying to change the position of molecules that are held together by the intermolecular bonds. With vary number of straws; its strength also will increase. Theory: Term such as strength, stiffness and toughness are used in a special way by physicists. We will write a custom essay sample on Investigate the Strength of Straw specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Investigate the Strength of Straw specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Investigate the Strength of Straw specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Strength refers to the quality or state of being strong, in particular the capacity of an object or substance to withstand great force or pressure. While stiff or stiffness means small strains for large stresses (large Young modulus); not stretchy or bendy. Tough or toughness means undergoes considerable plastic deformation before it breaks. Consequently, tough materials absorb a great deal of energy before they break. In the experiment, when choosing a material it is always important to consider how the material behave under the conditions in which it will be used. For example, concrete is very strong under compression, but is weak in tension, where it breaks by brittle fracture as cracks open up. Aluminum has a similar stiffness to glass, but glass is usually brittle and shatters for very small strains whereas aluminum undergoes plastic deformation before breaking. In other word it is tough. While for the straw itself, when we stretched it, we are trying to overcome the intermolecular bonds between the molecules. At the same time we are also trying to change the position of molecules that are held together by the intermolecular bonds. With vary number of straws; its strength also will increase. After carried out this experiment, we realized that our prediction is correct. Once the number of straw increases as the result the length of stretched straw will decrease due to the constant weigh. While, when the length of stretched straw decreases; the strength of straw will increase. This is mean; the number of straw used is proportional to the strength of straw when weigh is constant. Or, in equation form; a b, where: a = Number of straw used b = The strength of straw. According to the result, what we can say is there are some weaknesses in running the experiment. Obviously, this thing we can see in the second trial. More specifically for the 2 straws and 3 straws. There is just little difference between the lengths. This thing cant happen because logically when the number of straw increase as the result the length of straw should be drastically increase too. All these weaknesses occurred due to some reasons: 1. This thing might happen in virtue of our mistake while taking the readings from meter ruler. We should be careful because the parallax error and zero error might occur while taking the reading. 2. Besides that, the effects of a change in surroundings might also affect the result of this experiment. It might in the form of sunlight, wave, water moisture and so forth. 3. Apart from that, many laboratory apparatus that we used is in dissatisfied condition and already outdated. For example, we realized that the scale meter ruler is not accurate or precise than it supposed to be. 4. The observer being less than perfect in the same way every measurement. There are several ways to overcome these problems from occurred again. We can prevent it by making some improvements: 1. First and foremost, try to avoid mistake while taking the readings from the measurement device. We should realize that parallax and zero error can occur while taking the measurement of the length of stretched straw. 2. Besides that, in order to get an accurate result we should use the laboratory apparatus which in the best condition. 3. We also can repeat this experiment may be for 3 or 5 times in order to obtain an accurate result. This is because we can avoid random errors. 4. We also need to be more careful and cautious in running this experiment. Conclusion: 1. Hypothesis is valid and accepted. 2. After running this experiment, we realized that once the number of straw increases as the result the length of stretched straw will decrease due to the constant weigh. While, when the length of stretched straw decreases; the strength of straw will increase. This is mean; the number of straw used is proportional to the strength of straw when weigh is constant.

The Trickster essays

The Trickster essays The trickster figure found in American Indian Mythology is a deep reflection of our inner psyche. Deep within us, we all can find the vengeful, animal instincts that define part of the Trickster. We can also find the irony within this character that leads us to challenge societal hierarchy and wonder whether life would be better if lived on a much simpler level. What really is the figure known as the Trickster? Radin describes the character in his prefatory note: Trickster is at one and the same time creator and destroyer, giver and negator, he who dupes others and who is always duped himself. He wills nothing consciously. At all times he is constrained to behave as he does from impulses over which he has no control. He knows neither good nor evil yet he is responsible for both. He possesses no values, moral or social, is at the mercy of his passions and appetites, yet through his actions all values come into being. The figure known as the Trickster appears in many cultures with different forms. Many Native American people told tales of Coyote. Among the Lakota, Spider wove the trickster's web. Among Northwest Coastal people, as well as some Siberian groups on the opposite side of the Pacific, Raven took on the trickster's role. The Blackfoot of the northern Plains saw both Coyote and Raven as tricksters. Worldwide, a variety of animals have taken on the trickster's role. In European and Chinese folklore, Fox often plays the part; some African people see Fox in the same light. Monkeys are tricksters in the Far East, and smaller creatures like Wasp and Mantis appear as well. Karl Jung's explanation for the archetype that surfaces as the Trickster is that they are the product of what he calls the collective unconsciousness. That thread of consciousness that connects all human beings and cultures around the world. It is split off from his consciousness and consequently behaves like an autonomous persona...

The Crimes of Tookie Williams

The Crimes of Tookie Williams On February 28, 1979, Stanley Williams murdered Albert Lewis Owens during a robbery of a 7-Eleven convenience store in Whittier, California. Here are the details of that crime from the Los Angeles County District Attorneys response to Williams petition for executive clemency. Late on the evening of February 27, 1979, Stanley Tookie Williams introduced his friend Alfred Coward, a.k.a. Blackie, to a man named Darryl. A short time later, Darryl, driving a brown station wagon, drove Williams to the residence of James Garrett. Coward followed in his 1969 Cadillac. (Trial Transcript (TT) 2095-2097). Stanley Williams often stayed at the Garrett residence and kept some of his belongings there, including his shotgun. (TT 1673, 1908). At the Garrett residence, Williams went inside and returned carrying a twelve-gauge shotgun. (TT 2097-2098). Darryl and Williams, with Coward following in his car, later drove to another residence, where they obtained a PCP-laced cigarette, which the three men shared. Williams, Coward, and Darryl then went to the residence of Tony Sims. (TT 2109). These four men then discussed where they could go in Pomona to make some money. (TT 2111). The four men then went to yet another residence where they smoked more PCP. (TT 2113-2116). While at this location, Williams left the other men and returned with a .22 caliber handgun, which he also put in the station wagon. (TT 2117-2118). Williams then told Coward, Darryl and Sims they should go to Pomona. In response, Coward and Sims entered the Cadillac, Williams and Darryl entered the station wagon, and both cars traveled on the freeway toward Pomona. (TT 2118-2119). The four men exited the freeway near Whittier Boulevard. (TT 2186). They drove to a Stop-N-Go market and, at Williams direction, Darryl and Sims entered the store to commit a robbery. At the time, Darryl was armed with the .22 caliber handgun. (TT 2117-2218; Tony Sims Parole Hearing Dated July 17, 1997). Johnny Garcia Escapes Death The clerk at the Stop-N-Go market, Johnny Garcia, had just finished mopping the floor when he observed a station wagon and four black men at the door to the market. (TT 2046-2048). Two of the men entered the market. (TT 2048). One of the men went down an aisle while the other approached Garcia. The man that approached Garcia asked for a cigarette. Garcia gave the man a cigarette and lit it for him. After approximately three to four minutes, both men left the market without carrying out the planned robbery. (TT 2049-2050). He Would Show Them How Williams became upset that Darryl and Sims did not commit the robbery. Williams told the men that they would find another place to rob. Williams said that at the next location all of them would go inside and he would show them how to commit a robbery. Coward and Sims then followed Williams and Darryl to the 7-Eleven market located at 10437 Whittier Boulevard. (TT 2186). The store clerk, 26-year-old Albert Lewis Owens, was sweeping the stores parking lot. (TT 2146). Albert Owens is Killed When Darryl and Sims entered the 7-Eleven, Owens put the broom and dustpan down and followed them into the store. Williams and Coward followed Owens into the store. (TT 2146-2152). As Darryl and Sims walked to the counter area to take money from the register, Williams walked behind Owens and told him shut up and keep walking. (TT 2154). While pointing a shotgun at Owens back, Williams directed him to a back storage room. (TT 2154). Once inside the storage room, Williams, at gunpoint, ordered Owens to lay down, mother f*****. Williams then chambered a round into the shotgun. Williams then fired the round into the security monitor. Williams then chambered a second round and fired the round into Owens back as he lay face down on the floor of the storage room. Williams then fired again into Owens back. (TT 2162). Near Contact Wound Both of the shotgun wounds were fatal. (TT 2086). The pathologist who conducted the autopsy on Owens testified that the end of the barrel was very close to Owens body when he was shot. One of the two wounds was described as . . . a near contact wound. (TT 2078). After Williams murdered Owens, he, Darryl, Coward, and Sims fled in the two cars and returned home to Los Angeles. The robbery netted them approximately $120.00. (TT 2280). Killing All White People Once back in Los Angeles, Williams asked if anyone wanted to get something to eat. When Sims asked Williams why he shot Owens, Williams said he didnt want to leave any witnesses. Williams also said he killed Owens because he was white and he was killing all white people. (TT 2189, 2193). Later that same day, Williams bragged to his brother Wayne about killing Owens. Williams said, you should have heard the way he sounded when I shot him. Williams then made gurgling or growling noises and laughed hysterically about Owens death. (TT 2195-2197). Next: The Brookhaven Robbery-Murders

Response Journal 5 Essay Example | Topics and Well Written Essays - 250 words

Response Journal 5 - Essay Example According to the CNN article, Transocean, the owner of the rig is blaming BP for its missteps which caused the spill. In the said article, Transocean pointed out that the explosion was the result of "a succession of interrelated well design, construction, and temporary abandonment decisions" that "compounded the likelihood of its failure," (CNN). If the claims of Transocean are true, we can conclude that an engineering decision was partly to blame for the spill. In fact even BP’s investigation revealed a failure in engineering design. As we all know, this spill caused widespread harm to the people, the environment and the wildlife of the region. A major implication of the engineering decisions in this incident is its effect in the environment. Marine life has been largely devastated. The aquatic food chain was disturbed causing the death of a multitude of organisms, several varieties of fish and other sea creatures. The economic implication of the spill is that the people whos e livelihood depends on the ocean now risk losing their means of survival. The social implication can be seen in how the spill affected the health of the workers at the rig and the people within the vicinity. Another important implication of the engineering decisions that led to the oil spill is in the area of politics. Government must have the will to restore the Gulf to its previous healthy condition.

Vodafone in India Research Paper Example | Topics and Well Written Essays - 1750 words

Vodafone in India - Research Paper Example The political situation in India is democratic and stable which means that the companies can work in India and perform their day-to-day business activities with ease (Bowhill 2008). Recently a single party has an own majority in the elections considered in the country which is a boon for Vodafone as a company as policy decisions are likely to be taken with ease which will help the company. For companies like Vodafone, this presents a huge opportunity and a wide market that it can explore in order to proliferate mobile subscriber base for its business. People in India are family loving and family oriented (Neild and Carol 2008). To take advantage of the situation Vodafone has introduced lower call rates to help stay connected with family members at low cost. Vodafone has been part of these technological changes and introduced advanced technologies in their operational processes. Considering Environmental factors Vodafone markets itself as one which takes care of the environment as thi s plays as a good sentimental advantage and helps the company in long run. There has been recent turmoil that has been witnessed in the telecom sector in India. The turmoil has been witnessed in the spectrum allocation and 2G license. Vodafone as a major telecom company abides by the rules and regulations set by the Supreme Court avoiding any disputes that may affect the brand image. Vodafone has researched on the Indian market and came up with plans to cater the needs of the Indian consumers.

Discrimination Against Women in Male Dominated Sports :: Movie Script Film Creative Writing Papers

Discrimination Against Women in Male Dominated Sports Assume you are a screenwriter in the year 2010. You have been commissioned to write a movie script about women's sports and current society. What is the theme? Who are the protagonists? What are the issues and how does the movie end? Due to the nature of this course, most of the films that have been shown concerned the discrimination women face when they attempt to compete against men in athletic areas that have long been considered unfit for their participation. Divisions of sport that could be regarded as more gender neutral were not mentioned nearly as often as those which have a long tradition of masculine head butting and back slapping, and athletics which are deemed feminine were not brought up at all. If the indignation felt by the protagonists of films like Girlfight is any indication of the present attitude of women towards sex-based discrimination in sport, it is entirely possible that we will have come a long way in the fight for equality by the year 2010. The following scenario is purely hypothetical and the future of the sport involved was manipulated for the purposes of this paper only. The activity of cup stacking has gained much popularity as a sport in the US today and is beginning to become known in areas outside of the country, such as Great Britain. It involves the stacking and dismantling of several predetermined cup arrangements in a specific order, with rules determining the exact manner in which a competitor must achieve this. The most important of these regulations is the ban on using both hands on one cup, as the active participation of both hands improves dexterity and assists right brain development. This is the side of the brain which promotes awareness, focus and rhythm, which are very important skills for the cup stacker and average person alike. Competition can take place on both an individual and team level, the clock and one's personal record being the antagonist in the former scenario. Boys and girls compete without regard to gender in this sport, though the record holder for speed stacking the cycle formation is female, clocking in at 7.43 seco nds. It has been observed that women generally possess more dexterity than men, which would give them a natural advantage in sports of this nature. This observation has led to a hypothesis concerning the domination of women in the future of cup stacking, which is the focus of Stacking Up, brought to you by Pickled Newt Pictures.

Stone Cold Essay

A character study of Shelter from Stone cold. Show how our view of the character changes throughout the novel. Shelter is one of the two first-person narrators in Robert Swindell’s Stone cold. In the novel Swindell’s follows the runaway teenager, Link, from his home in Bradford to the mean streets of London where his path crosses that of Shelter, an ex-soldier who creates his own army while also cleaning up the streets of the homeless people he despises. In this essay I will show how the character is portrayed and how our view of him changes throughout the novel.In daily routine orders 3 Swindell’s choice of language makes Shelter sound very negative and hateful in the way he talks about homeless people. Swindells also uses army terms such as ‘Tour of inspection’ and it tells us that Shelter must be an ex-soldier and must still believe he is one. This gives us the impression that there’s something not quite just right about Shelter. In daily r outine orders 4 Shelter goes on to explain how the secret of victory in any campaign is planning and preparation. He describes his planning as being â€Å"Meticulous and my preparations are now complete†.One of the things he has acquired has helped him to complete and that is a cat. He talks of the cat as his distraction to who he really is. â€Å"A man who keeps a cat can’t possible mean any harm, can he? † He also named the cat Sappho which will project an image of a kind man who cares. There’s not yet any indication of violent intentions but there is a suspicion of something untoward. Daily routine orders 5 & 6 enters into Shelter’s concept pf his ‘mission’ and we learn about his abnormal thought and views on murder.He believes that killing the homeless people on the streets is his job, his duty to his country. He creates a pleasant and warm atmosphere among the victims to make them feel safe and willing to do whatever he says for s helter and food and drink. â€Å"He fell for it, hook, line and sinker†. Shelter tricked someone therefore planning it and not feeling regret for it. He uses the words ‘do-gooder’ which simply means someone who does good things. He uses these words throughout the novel to mock people who actually are ‘do-gooders’. Further on in the novel Shelter describes the people he has killed as ‘waste’.This tells us he couldn’t care less about how those people who were humans just like him. He tempts them with food and warmth and when they have their backs turned he strikes. We start off thinking that there is something not quite right about Shelter and the further we get on through the novel the clearer it becomes that Shelter is completely insane. In daily routine orders 12 & 13 Shelter is much more open about his ‘army’. â€Å"My lad’ll not be doing a lot of yomping, so it doesn’t matter if the footwear is a bit slack or a bit snug†.Obviously he’s describing a sort of ‘Dead Army’ and he has been making them look the part; cutting their hair all the same length, giving them the same boots even if they aren’t always the perfect fit since they are not going to be marching around anywhere because, as we know, they are all dead, murdered by Shelter to be precise. By this point in the novel we can tell he is absolutely insane. Shelter’s claims to be clever are completely correct. The way he coaxes people into believing he is a genuinely kind, friendly, caring and approachable man, takes skill. He can put on such a good act.In daily routine orders 15 he plays the part of a man who is truly upset about his missing cat and asks Link if he’s seen it. Also in daily routine orders 15 he fools the police into believing he had nothing to do with the disappearance of Tanya. In terms of cleverness Shelter is brilliant, completely undetectable. Link and Shelte r finally meet but now we see Shelter through Links eyes. In this last chapter you start feeling sorry for Shelter. To get like he is he must of have a pretty rough life. Link goes on about how Gail will come to save him and Shelter says â€Å"She’ll let you down, they always do†.With that statement we are told that he must have had a girlfriend in the past that let him down which immediately makes you feel sorry for him. So yes, seeing Shelter through Links eyes does change our view of him. I still wouldn’t trust him more than Link, based on what I already know. To conclude my essay on how Shelter changes throughout the novel. I’d say my view of shelter changed when we came to the end of the novel. To start with he was just plain strange. He gradually went from strange to right out insane. When we came to see Shelter through Links eyes I felt sorry for him and he needed a lot of psychological help.