Micrometer Ammeter Voltmeter Essay Example

Micrometer Ammeter Voltmeter Paper For this investigation I looked at all the factors that could affect the results of my experiment. These are the Material of the wire. Different materials conduct in different conductivities. The better conductor the wire material is the more electric current will flow therefore the resistance will decrease. Wire Length is also another determining factor of wire conductivity, as a general rule the longer the wire is the further the current of electrons will have to travel meaning that the current will drop due to the larger amount of wire creating more resistance. Thickness of the wire, the thicker the wire I think will add more resistance because there are more metal ions in the wire to have collisions with electrons causing more resistance in the wire. Wire temperature after the experiment has been tested/is undergoing testing. The temperature has the same detrimental effect that a thicker wire does causing more collisions and causing greater resistance to the flow of current. I will be testing overall for the resistivity of the wire over different distances of wire. AIM My aim is to investigate the resistance of a wire over set distances incrementing every 50mm. We will write a custom essay sample on Micrometer Ammeter Voltmeter specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Micrometer Ammeter Voltmeter specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Micrometer Ammeter Voltmeter specifically for you FOR ONLY $16.38 $13.9/page Hire Writer There is little equipment needed and uses little equipment that can cause calculation errors meaning incorrect results. Also instead of testing for different thicknesses this allows me to use 1 wire and simply change the distance over which it is tested. It will also give clear and concise readings that can be trusted and used for comparing/observing trends. I chose not to measure the width of the wire and presume that the wire is of the stated thickness of 28 swg Nichrome wire. For this experiment I will assume that the wire is perfectly round at 0. 38mm diameter. FORMULA’S. Charge is measured in coulombs and charge is the amount of current that flows every second. Electric current is measured in AMP’s (A), Charge in COULOMBS (C) 1 Volt of P. D = 1 Joule per coulomb i = Q / t Current can only flow in fully complete circles, there are two different types of circuits called parallel and series. The experiment I set up is a series circuit so that the current is either Fully ON or Fully OFF. All electrical current has energy stored as Potential energy, the voltage transferred in a circuit is measured as energy delivered by each coulomb of electricity. This is Potential difference (P. D), potential difference is the measure of voltage difference between two points within a complete circuit. Current is recorded by using an Ammeter to find out the Amperes in a circuit, Voltmeters are used to measure P. D. I will need to use both of these to measure the Current and Voltage when carrying out my experiment. Ammeters are connected in series with the wire and the Voltmeter in parallel. Resistance of a wire relates to the amount of current able to flow. The larger the resistivity of my wire the less current will pass through. To calculate resistance the following formula is used: R = V / I When resistance is measured the unit is given in Ohm’s. 1 ohm (? ) means 1 Volt is needed across my wire to sustain a 1Amp current, they are all related. PREDICTION Through my own knowledge gained I know that as the lengths of the wire increases so will resistivity. The electrons travelling through the wire have a larger distance to cover thus less current will pass through the wire. I predict that as the wire distance increases so will the resistivity. If the distance tripled, I predict that so will the resistivities assuming that the wire is the same diameter all the way along and perfectly round. The resistance is directly proportional to the distance. Resistance (ohms) Length (m) PRELIMINARY TESTING Before starting the testing on my final experiment I created a small preliminary test to quickly test for trends/accuracies or potential problems that could occur. It would be easier to solve them before starting the main experiment. I tested different thicknesses of wires from 28/30/32 swg Nichrome wire thickness. I also tested the supply current wasn’t too much/too little. This was a test to see if there were also any learning curves to overcome, this would help make the test fair before there could have been discrepancies in the final experiment. When choosing the wire I used a Micrometer to ensure that I had the correct thickness of wire and that it was reasonably accurate thickness of wire. The micrometer measures to the . 00 mm to ensure precise accuracy at very small thicknesses. During the preliminary tests we started with supply voltage on 5volts, this caused the wire of 28swg to get very hot and curl up at very high temperatures eventually snapping the wire. Instead of using a thicker wire we chose to drop the voltage down in increments of 0. 25 Volts and decided the best voltage to use was 3volts. This supplied sufficient and reliable results and didn’t damage any of the equipment. During the test I also found that results varied due to leaving the wires to cool sometimes and testing 3 different distances back to back quickly. So in the final experiment I will leave the wire to cool for 30seconds between each change in distance. The Independent variable (I. V) will be altered using the crocodile clips to change the distance selected of the wire. The wires will have been premeasured out to the distances 0-500mm with each increment of 50mm. Now that I have assessed how the experiment will go I am quite confident the experiment will now produce more accurate results, I will ensure this even further by repeating each test 3 times with 30seconds cool down between each test. This will be much more time consuming but will ensure that I get accurate results. I will take the average of the 3 results by adding them up and dividing by 3. In the final experiment I found that there may be an equipment error in the power pack causing +- 0. 005V fluctuations in the set voltage although this shouldn’t affect my experiment as the power pack has a dial function to set the voltage. This is quite an inaccurate way to do, so we must check the readings using a Voltmeter. APPARATUS AND SETUP Power pack – 3volts Crocodile Clips + wires 28 swg Nichrome wire Wood plank to ensure wire doesn’t burn the lab desk Meter ruler, 30cm ruler Micrometer Ammeter Voltmeter METHOD On the wooden plank, place the meter ruler and measure as accurate as possible from 0-50cm in increments of 5cm.

Stopping use of cocaine is a way of achieving good health Essays

Stopping use of cocaine is a way of achieving good health Essays Stopping use of cocaine is a way of achieving good health Essay Stopping use of cocaine is a way of achieving good health Essay In paragraph one, I will address the issue of introduction by creating an icebreaker. For example, we may lose five people to heart failures from this college every semester. This will serve as a chance to draw the attention of the whole audience to me. First, I will start by explaining what cocaine is. That it is a substance that when taken into the human system, it causes serious complications through stimulation of the brain. Since it is persuasive, I will need to know my audience, so I will ask if there is anyone who has ever used cocaine before. I will use this as knowledge source but not as an example. It is important to motivate the audience to feel at ease. Next, I will explain the various ways through which this substance is taken into the body which includes inhaling the powder, or through injection into the veins. Still in the same paragraph, I will state and explain some of the reason why people use cocaine. Some people will feel high. This is hype; I will illustrate why this is the leading cause of cocaine use. The feeling that a person gets to be above all other things. I will tell my audience that this is called illusion, and not hype as most individuals who take cocaine and other hard drugs think as explained by Berne et al., 2006. I will explain teenage influence where some teens are always dragged into the drug usage without being aware. I will also explain that other people get into cocaine use as a way of reducing stress since, during the illusion moment, they are not always in their mind, just moving in a strange world. In the second paragraph, I will discuss the content of cocaine that people take. I will explain that the cocaine contains a substance called caffeine a substance that is always responsible for addiction to the use of this drug. I will help them understand that this substance always dissolves in the blood and where it is transported to the brain and the central nervous system. At this place, it causes lapses in the brain activity while increasing the speed at which nervous system work. I will also give the second component, coke. Cocaine is derived from the coca plant whose leaves are used to prepare cocaine. Coke is what is responsible for causing increased body temperature once taken. In paragraph three, I will address the impact of using cocaine where I will handle each aspect one by one starting with medical. Stating that health is paramount to everybody, I will address the use of cocaine that will deprive individuals of their good health, hypertension being the main one. Hypertension is a major killer, a condition that has no cure. I will explain that the increased blood pressure can at sometimes lead to the rapture of the blood vessels as argued by Frank, Ellen 2000,which is fatal. I will mention other impacts such as stroke and numb. In paragraph four, I will address the issue of rehabilitation. I will make it clear to them that the process of recovery comes from an own individual. Once the will is present, even when taken to hospital for rehabilitation, they will find it easy. I will after that conclude by iterating that to achieve good health; individuals need to stop using of hard drugs especially cocaine. References Ashley, Richard.Cocaine, Its History, Uses And Effects. New York: St. Martins Press, 1975. Print. Berne, Emma Carlson.;Cocaine. Farmington Hills, MI: Greenhaven Press, 2006. Print. Cocaine. Its History, Uses And Effects..;Annals of Internal Medicine;84.2 (1976): 237. Web. Connolly, Sean.;Cocaine. Chicago: Heinemann Library, 2001. Print. Frank, Ellen.;Gender And Its Effects On Psychopathology. Washington, DC: American Psychiatric Press, 2000. Print.

Discomfort vs. Discomfiture

Discomfort vs. Discomfiture Discomfort vs. Discomfiture Discomfort vs. Discomfiture By Maeve Maddox A reader asks the difference between the words discomfiture and discomfort. Although you may find the words given as synonyms in a list, a distinct difference exists. Discomfort connotes a lack of ease. Discomfiture connotes unease together with embarrassment. discomfort (noun): 1. Something that makes a person feel (mentally or physically) uncomfortable; an inconvenience, a hardship. Also: a slight physical pain. 2. The state, condition, or fact of being (mentally or physically) uncomfortable; uneasiness. Here are some examples of both physical and mental discomfort: Why Fear of Discomfort Might Be Ruining Your Life Depending on where you experience the discomfort, eye pain can fall into one of two categories: ocular pain (occurs on the eye’s surface), and orbital pain (occurs within the eye). Rub-on pain reliever can ease arthritis discomfort Computer-related posture and discomfort in primary school children Turkey Summons US Ambassador In Ankara To Express Discomfort [over US speech] Other leaders expressed similar discomfort with the law but were not as outspoken, including the prime ministers of Canada and the United Kingdom. discomfiture (noun): 1. Defeat in battle, overthrow, rout. 2. Frustration of plans or hopes; utter disappointment; perplexity, confusion; unease, embarrassment. Discomfiture in the sense of a literal rout or defeat in battle is the word’s original meaning and occurs with some frequency in historical and religious works, but in current usage the usual sense is figurative. Here are some examples of the use of discomfiture: The Cup day at Goodwood was remarkable for the discomfiture. France’s Foreign Policy: the Discomfiture of Gambetta’s Enemies [Lebanon] has clearly been delighted by President Bashar al-Assads discomfiture Divest yourself of Bad Breath to Avoid Discomfiture in Public Meanwhile, Democrats who have few things to cheer them are enjoying the Republicans discomfiture. (Washington Post) Republican leaders are delighting in the Democrats discomfiture. (Los Angeles Times) To sum up, â€Å"physical discomfort† is what you feel with a pebble in your shoe. â€Å"Mental discomfort† is what you feel when you hear a government spokesman or news anchor say â€Å"have went.† Discomfiture is what you feel when you are all set to give a PowerPoint lecture to a room full of people, and the projector won’t work. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:50 Rhetorical Devices for Rational WritingUsing the Active Voice to Strengthen Your Writing20 Ways to Laugh

Craft and Cadbury horizontal merger as means of company growth Essay

Craft and Cadbury horizontal merger as means of company growth - Essay Example In 2010, 21 acquisitions have taken place till now and the total value is found to be 1.5 billion dollars. One of the most talked about merger and acquisition in the recent time is the Kraft and Cadbury horizontal merger. This report is all about this merger. The report tries to find out the relationship between the Kraft and Cadbury merger and the growth of both the company. Kraft foods Inc is one of the oldest and largest food and confectionary companies in the world. The company started its journey in the year 1903. Today the products of the company are consumed by billions of people in over 150 countries in the world. The company employs more than 100,000 people. Cadbury, on the other hand is one of the most popular confectionary company. The company is renowned for three different types of confectionary – chocolate, candy and gum. It started its journey in 18th century and it has its presence in 60 countries. The company employs almost 45,000 people. After the merger between these two giants (Kraft and Cadbury) Kraft foods have become the second leading food company in the world. It has also become the number one company in confectionary sector. Its total revenue is found to be almost 50 billion dollars. There are eleven brands; value of each of these is found to be 1 billion dollar. Moreover there are more than 70 brands, each of which is a 100 million dollars brand. It is found that 34% of Kraft’s middle and senior level management is women. Furthermore 30 leaders are found to be from 10 different nationalities (Kraft Foods. Building a global powerhouse). As a result it can be said that there is a diverse global team that is running Kraft Foods Inc. after its merger with Cadbury. In September, 2009 a proposal was made from Kraft foods Inc. to the Cadbury Inc.’s board regarding the merger of two companies. According to CNN, on September

The Goya Painting Essay Example | Topics and Well Written Essays - 500 words

The Goya Painting - Essay Example The essay "The Goya Painting" explores the painting of Goya. Goya has brought more attention to the central figure whereas the other figures are crouched down and small. The last way that Goya brought attention to the central figure is through light and shadow. The use of light and shadow is very important in that Goya used bright light to bring the central figure to the viewers attention while the other figures and the building are in shadow pushing them into the background. Light and shadow is also used to get the feeling or message of the painting across to the viewer. In this case, the gunmen are darker and dangerous looking because they are in the shadows more. The feeling is that the gunmen have a dark intent and the man in the light is innocent and does not deserve to be in the current circumstance and the light cast on the slaughtered gentleman also creates a feeling that the killing was unnecessary. I feel sad and horrified when viewing Goya’s work because the paining gives me a feeling that any armed conflict between anyone is horrifying and unnecessary. It is clear from this painting that Goya is against war, armed conflict, and, in particular, violence. Goya obviously does not care for violence and the death associated with violence the violence of war. This is clear by the feelings this paining portrays and by the depiction of the gunmen as apposed to those on the opposite side of the guns. The people being shot at look distraught and innocent as show no reason why they should be.

Masculinity in Charlotte Brontes Jane Eyre :: Charlotte Bronte Jane Eyre Essays

Masculinity in Charlotte Bronte's Jane Eyre Throughout the novel 'Jane Eyre' we meet 5 male characters. Immediately we can notice that the number of female characters outweighs the number of male characters. It feels as though BrontÃÆ'Â « is trying to tell us that overall women will come out more influential and powerful than men. Indeed power is what our male characters have in common. Their power however alters from character to character. This is the common version of masculinity portrayed by Bront throughout 'Jane Eyre'. Many men at the time of the novel were very powerful, this power varied from wealth, influential positions and even whom you knew. Women were not entitled to their own opinions and their husbands or fathers made all the decisions. Jane however defies the conventions of the time. She has her own opinions and is not prepared to take orders from the powerful men in the novel. With power comes other traits, and this is where we can differentiate between the characters. Brocklehurst and St John both have power through the position they hold (Brocklehurst being in charge of the girls' school and St John being a parson), whereas John Reed and Rochester have power through wealth. Mr Lloyd (the apothecary) is perhaps the only man in the novel without any real power and he is the only person who listens to Jane. Rochester's masculinity is the most important, as he represents the best and worst of a man. His masculinity is typical of this period and he is shown ordering Jane around, 'bring me my horse', most women were obliging to men as they were the authority in society, although Jane resents this authority and wants to do things her own way. So from this we can see that the masculinity he shows typical of the time and incredibly dominant and powerful over women in the novel, especially Jane. As the novel progresses however Rochester becomes less masculine during the fire at Thornfield he loses everything, here we can compare him to Jane because; at the beginning she too doesn't have anything. In loosing everything he loses his masculinity and power. He no longer has his house, 'I saw blackened ruins'. His house is part of his power and this is no longer there. He also looses his sight and his hand, Jane becomes his, 'eyes and hands', and Rochester is reliant on her, 'I led him out of the wet wild wood'. The role of the dominant one is reversed. Here Rochester shows very little masculinity as he is now not in charge. Jane saves Rochester but equally he saves her, from St Masculinity in Charlotte Bronte's Jane Eyre :: Charlotte Bronte Jane Eyre Essays Masculinity in Charlotte Bronte's Jane Eyre Throughout the novel 'Jane Eyre' we meet 5 male characters. Immediately we can notice that the number of female characters outweighs the number of male characters. It feels as though BrontÃÆ'Â « is trying to tell us that overall women will come out more influential and powerful than men. Indeed power is what our male characters have in common. Their power however alters from character to character. This is the common version of masculinity portrayed by Bront throughout 'Jane Eyre'. Many men at the time of the novel were very powerful, this power varied from wealth, influential positions and even whom you knew. Women were not entitled to their own opinions and their husbands or fathers made all the decisions. Jane however defies the conventions of the time. She has her own opinions and is not prepared to take orders from the powerful men in the novel. With power comes other traits, and this is where we can differentiate between the characters. Brocklehurst and St John both have power through the position they hold (Brocklehurst being in charge of the girls' school and St John being a parson), whereas John Reed and Rochester have power through wealth. Mr Lloyd (the apothecary) is perhaps the only man in the novel without any real power and he is the only person who listens to Jane. Rochester's masculinity is the most important, as he represents the best and worst of a man. His masculinity is typical of this period and he is shown ordering Jane around, 'bring me my horse', most women were obliging to men as they were the authority in society, although Jane resents this authority and wants to do things her own way. So from this we can see that the masculinity he shows typical of the time and incredibly dominant and powerful over women in the novel, especially Jane. As the novel progresses however Rochester becomes less masculine during the fire at Thornfield he loses everything, here we can compare him to Jane because; at the beginning she too doesn't have anything. In loosing everything he loses his masculinity and power. He no longer has his house, 'I saw blackened ruins'. His house is part of his power and this is no longer there. He also looses his sight and his hand, Jane becomes his, 'eyes and hands', and Rochester is reliant on her, 'I led him out of the wet wild wood'. The role of the dominant one is reversed. Here Rochester shows very little masculinity as he is now not in charge. Jane saves Rochester but equally he saves her, from St

John Pope Paul Iii Movie Reflection

December 9, 2010 Reflection on Pope John Paul II movie I found the movie Pope John Paul II very interesting and spiritually moving. God tells us in the bible that following him is not free of tribulation. He comforts by telling us he will not put anything against us that we cannot overcome. Sacrifice is one the key ingredients that comes with following the Lord. Pope John Paul II is a wonderful role model to follow when it comes to sacrifice. When the Nazis were trying to put an end to religion Karol was busy studying Gods word. By doing this, he is willing to sacrificing his life, because if he was caught he would be killed.He spent much of his younger years with friends, teaching them about human dignity and God. Before his Cardinal Years Karol sacrificed having a wife and children so that he could follow his passion for the Catholic religion and become a priest. After many years he was elected Cardinal and then Pope of Poland. Another moral issue in this film is the commitment of many mortal sins. Murder is the main sin seen throughout the movie. The Nazi’s wanted the polish to be miserable and gave them little freedom. If anyone was found rebelling against their strict laws they would be beaten and killed.This sin is repeated numerous times a day, and in great numbers. Even after the war died down murder wasn’t over. This is seen When Pope John Paul II life was unexpectedly put in danger when someone shot at him while he was making an appearance in public. Pope John Paul II fought for his life and continued to try and bring peace among people. All in all this movie is a wonderful example of what it means to follow Christianity. Pope John Paul II is a delightful man who brought a sense of comfort with him when speaking to the people. I found this movie very enjoyable and would recommend it to many people.