Energy and potential Essay Example | Topics and Well Written Essays - 500 words

Energy and potential - Essay Example Despite the natural occurrence in the electromagnetic field, there are also human made forces for instance, the use of X-rays in hospitals. When an individual subjects an object to function he employs energy in order for the function to take place. In this connection, we can deduce that the interaction of electric and magnetic field produces a strong magnetic field (Viegas 34). It has been estimated that the electric fields act in a similar way as gravitation field. In this case, they have to involve action at a force distance. According to Newman (56-59), he noted that gravity force is a conservative force that is capable of moving an object. In a case where gravity is unable to move an object their needs to be application of energy which may impact on potential energy. Object vertical position enables the preservation of potential energy inside the object (Giordano 71-73). The position may be lost when object moves against the rule of gravitation. This calls upon the need for other energy forces to act on an object in order to perform its function. This kind of energy comes in form of work through exerting pressure in an object so as to enhance movement. In regard to this, work is done in a view to gain upon its potential energy. In this case we should note that we cannot rely on the gravitational force but also rely on external force which works on the object. objects are capable of moving from high level to low level energy but in case of moving an object from low level energy to high level energy there is need to apply the use of force which is done as a form of work (Newman 77). This case is similar in an electric field, a case which requires a charge to be moved against the natural direction. There will be need to employ energy through work. When work is applied it means that there would be an addition of potential energy upon the acted object. This natural direction takes the place

Impact of Computer Technology

Impact of Computer Technology Computer Technology I am using and how Im using it? Computer technology starts from the time you wake in the morning, your alarm on your phone to the cup of coffee brewing. Computer technology has come a long way from when I was a child. Lots of us now have house alarms, electric toothbrushes, plasma televisions, Xboxes, I pad, tablets, laptops all these to interact with loved ones across the globe. These devices also encourage our children to interact on line with a wide variety of people in various occupations example the international space station through Facebook. Or Skype family and friends in Australia or New Zealand. Another feature I find good is the various apps on Facebook that allows you to check in during disasters to allow family and friends to know your safe. Other devices are used to check on our health blood pressure monitors is one I have checked every 6 months along with the nebuliser used when I suffer an asthma attack. Advantage of computer technology? Computer technology has changed the way we live considerably, our life expectancy has increased. This is down to all the new medical devices available and procedures people can have to prolong lives. Every day we hear of newer devices coming on the market whether it be for the weather devices, food industry or weapons, medical devices, aircraft, drones or I robot technology. Some are extremely helpful helping toward our survival on this planet. Weather devices help track hail, rain, snow, frost, heatwaves. Society has a better understanding of different cultures all at the touch of a button thanks to the companies that are committed to researching and updating Google being one of many.   Medical devices have improved over the years with cat scans, x ray machines including portal ones, from the largest to the smallest something as tiny as a wireless device. With the wide variety of technologies some are quiet complex but provide much needed support both in hospital setting to home s upport. Assistive technologies include mobility wheelchairs and aides, sensory hearing aids. Common aids being manufactured over the last number of years include bionic arms, legs and hands. As a lot of these are used in war torn areas. Home care has seen an increase of features to improve daily living for family members IV equipment, ventilators, hoists and specialised beds are commonly used in homes are care facilities. Freeing up hospital beds. There is a lot more medical technology out there this report names just some of them. Disadvantages of Computer Technology? Cyber Bullying is a major issue. Social skills are affected as people forget how to talk to one another. Social aspect of meeting new people has totally changed as has dating and clubbing. Letter writing has become a thing of the past. People have become addicted to online gambling and games. Public life impacts? Medical ID bracelets, medical apps on your mobile phones come in handy if you have a medical condition. This sort of devices can help save your life or those around you. New hips, knee replacements. Give the clients a new lease of life, thus helping families ensuring the family member stays out of care facilities. Private impact on life? Public and private are very much the same as the goals are all the save to help improve the quality of life for our loved ones. Current developments? Weather systems are still being produced, although yet no earth quake system has been produced yet. Google are producing new and exciting gadgets every day along with faster information. Research for new medicines is ongoing with the different research companies. Medical drones are used in war torn countries around the world. I Robots are in production to assist in treatments where disease has broken out. Gadgets for fun gps golf watches, watches to measure heart rate, blood pressure. Medical devices help improve lives of everyone. X-Ray, Vein visualisation technology, joint replacement, morphine pumps, incubators, cat scans many more. Entertainment television, news, educational documentaries, YouTube covers music, live feeds, life. Food industry improvements on farmers tractors, combis, growing technics. Digital diagnostics makes health care more accessible. Cloud is used in under developed countries for information. Wearables- Fitness trackers, smart watches another example is Intel teamed up with the Michael j. fox foundation to see if their wearable technology could pin point certain Parkinson disease. (Irish Computer science 2017) Health Formatics electron files, information stored in hospital data. Digital therapy Well frame combines mobile technology and AI (artificial intelligence) provides care for when clients return home. This technology tracks diet, exercise and its a GPS system. Catering to mental health clients, cardiovascular. Hackathons lots of the medical devices wouldnt be readily available if it wasnt for hackathons. Many of these devices were requested for other projects. Software developed, hardware inventions all came about through Hackathons. Safety, Health and Welfare Act 2005 Sets out provisions within the safety health and welfare act 2005 as set in legislation that the employer must. Carry carry out a risk assessment. Provide a safety standard for all equipment, chemicals within the premises. Must provide provisions for training for these equipment, chemicals and induction as part of an ongoing programme. Must inform all people staff, visitors, workmen anyone who enters the premises of the safety statement. Data protection legislation 2003. Data protection is your right to privacy. We also have the right to access data and have it corrected if its not correct or misinformed. Our data is protected once we give our details to certain companies under the data act 2003. Freedom of information act 2003. The freedom of information act 2003 allows us to access records held by the government departments and some public bodies. This is ensuring that charities must provide public records of all donations and how the money is spent. Defamation act 2009? This was changed from libel and slander to defamation to keep up with technology example Facebook and the easy access people have with sharing stuff. So, if I posted on Facebook that one of my neighbours was selling drugs and she wasnt but I didnt name her. But I had given out enough details for people to know who I meant thats defamation. Example neighbour wears black everything thinks shes a vampire with the gothic look. Well then, her employer the bank manager go AIB were to hear of this he suspended her until further notice.

The Hornets Nest Essay -- Expository Cause Effect Essays

The Hornet's Nest Without proper preparation, getting rid of a hornet's nest can cause more problems than it solves. Although I do not have first-hand experience, I can relay an incident explained to me by my mother regarding my father and the hornet's nest he came upon in their flowering crab tree. Suffering from the results of the incident, which can only be described as simultaneously hysterical and tragic, my father spent most of last week recovering from injuries that were both self and hornet-inflicted. His various comical and disastrous attempts to remove this nest from their property, and the resulting misery he endured, bring to mind a saying my high school English professor used frequently, "If you fail to plan, plan to fail." Under the guise of "heading out to do some yard work," my father took on the dubious and dangerous task of attempting to rid his treasured flowering crab tree of a hornet's nest, reported by my mother to be the size of a large, ripe watermelon. Armed with the starter for the barbeque, the garden hose and a rake, Dad approached the tree and offending nest with the determination of a front line soldier ordered to advance on the enemy line. His plan was to set the nest on fire (yes, while still attached to the tree) and then douse the ensuing inferno with the garden hose. Coming upon the nest, Dad stealthily lit the barbeque starter under the huge hornet hive and stepped back as it became engulfed in flames. With his trusty garden hose in hand, he immediately began his attempt to extinguish the flames before the tree, the house, the whole neighborhood caught on fire. Although the flames died down expediently, not all of the hornets perished in the blaze. A few survivors remained, and all... ... ice pack pressed to his neck. Three of the disenchanted beasts had pursued my father into the house and the crashing sounds were those of the ensuing chase and massacre in the living room. What were the results of this encounter? My father sustained bad stings to his neck, forearm and calf, a large bruise to his knee, and a stiff and sore back that threatened to halt his journey to work the following morning. It is apparent to me that the moral of this story is that proper preparation would have saved my father a great deal of pain and suffering. Had he taken a few simple precautions (wearing long sleeves and gloves, or perhaps making a quick call to an exterminator) perhaps the incident may never have occurred. According to the latest reports from my mother, the nest remains where it landed on the boulevard of their lawn and is still humming menacingly today.

Enthalpy Lab Background

Enthalpy, represented by the sign ? H in kJ/mol, is the heat change in a reaction. It shows whether how much heat is released or absorbed during the reaction. If the reaction is endothermic, the enthalpy would be positive and if the reaction is exothermic, the enthalpy would be negative. During a chemical reaction, which consists of breaking and creating bonds, heat is either absorbed or released. In this lab, the reaction uses the disassociation of an ionic compound ammonium nitrate shown in the equation #1 below into ions.In order to disassociate ammonium nitrate into ions, energy is required. Both NH4 and NO3 are always soluble, therefore the ionic compound disassociates completely. Through equation #2, heat absorbed or released can be measured. In equation #2, q stands for the heat change in joules, m for the mass of the water in grams, C for the specific heat of water, and ? T for the change in temperature. By using the calorimeter with a stir rod, change in temperature is found . 1. NH4NO3(s) NH4(aq) + NO3(aq) 2. q=mC? TFree energy is a thermodynamic function that shows the available energy that can be converted into work. By using the Gibbs-Helmholtz equation, which uses free energy and is shown in equation #3, spontaneity of the reaction can be found using enthalpy, temperature, and entropy. Free energy, unlike entropy, is an absolute way to determine whether the reaction is spontaneous or not. If the free energy is negative, then the reaction is spontaneous, whereas if the free reaction is positive, then the reaction is not spontaneous.If free energy is neither, meaning if the free energy is zero, the reaction has reached equilibrium, therefore not shifting to left or right. In this lab, the reaction shown in equation #1 reaches equilibrium, so the free energy of this reaction would be zero. Entropy, shown by the sign S, is the measurement of molecular randomness or disorder. It is given in J/K*mol and it determines the disorder by the number of molecul ar arrangements that are possible in the state, whether it is solid, liquid, or gas.The more arrangements there can be, or larger amount of mole there is, the higher the entropy. If the change in entropy of a given reaction is negative, it means that the reaction is increasing in order, or decreasing in disorder. If the change in entropy of a given reaction is positive, it means that the reaction is increasing in disorder. Generally, negative entropy of a given reaction means that the reaction is spontaneous, but not always. Both equation #3 and #4 can be used to find entropy. 3. ?G = ? H-T? S 4.? Sreaction=? pSproducts – ? nrSreactants In equation #4, if the entropies of the molecules involved in the reaction are known, then change of entropy in the overall reaction can be found by subtracting the sum of the entropy of the products by the sum of the entropies of the reactants. If the entropies of the molecules aren’t known like this lab, than equation #3 can be used t o find the entropies of the reaction, where T represents temperature in Kelvin, ? G is the change in the free energy in kJ/mol, ? H is the change in enthalpy in kJ/mole, and ?S is the change in entropy in J/K*mol. The enthalpy of the reaction shown in equation #1 can be calculated by the third equation using arithmetic because ? G is zero. And in this equation, the formula number 3, where ? G = ? H-T? S, Enthalpy must be greater that Entropy if the equation is to be positive. This is reason why this value is set to zero, because then by subtracting the enthalpy the value of entropy can be found. And through these methods, the value of G can be substituted in and to find the accepted value of ? H and ? S.The Kelvin is the accepted value, and the ? S can be found when plugged in ? H and ? G to be found as the zero value. The calculated entropy should match or be very close to the accepted entropy value for the dissolving of ammonium nitrate if the ionic compound is dissolved in water and the enthalpy determined by the calorimeter because the calorimeter shouldn’t have lost any heat to surrounding and all of the solid should have been dissolved. Through this method, the absorbance rate of FeCl3 can be estimated, just like how NH4NO3 can be found.

NCTM standards for elementary school mathematics Essay

The National Council of Teachers of Mathematics is a teacher support organization to improve the learning standards of mathematics and ensuring equitable access to quality mathematics teaching and learning, the organization is focused on research, professional development, advocacy, equity and curriculum instruction and assessment. The council developed ten standards based on the mathematical content and processes, according to Bassarear,(2007), those based on mathematical content include Number and Operations, Algebra, Geometry, Measurement, and Data Analysis and Probability, while the standards based on processes are Problem Solving, Reasoning and Proof, Communication, Connections, and Representation. The strands are applicable in different levels of elementary education. The strands developed are founded on the six principles of Curriculum, Equity, Learning, Assessment, Teaching and Technology and articulate that Number and Operations which is concerned with creating and enlarging understanding of whole numbers as this is elemental requisite in mathematics. Geometry is concerned with recognizing shapes and recounting spatial relationships that exist, it deals with analyzing characteristics and attributes of two- and three-dimensional geometric shapes, geometry also is concerned with creating mathematical opinions concerning geometric relationships, such as locations, symmetry, transformations, visualization and coordinate geometry. Measurement is another standard which is concerned with terms of discovering assessable attributes and evaluating objects by using these attributes. Data analysis and probability is concerned with application of data management and probability techniques, such as data collection, organization, data analyses, sorting and using inferences. The other standards are problem solving where students should be able to derive solutions of problems, Reasoning and Proof where the answers to the problems can be verified by mathematical means, Communication in terms of conversing the answers derived and methodology used, Connections in establishing relationship between different mathematical techniques and representation where students should be able to represent the problems and the solutions. While the proposed standards have been faced with controversies, they have supported immensely the regulation of elementary schools mathematics in United States and Canada. References Bassarear, Tom. (2007). Mathematics for Elementary School Teachers. Florence, KY: Cengage Learning.

The beast in Lord of the Flies essays

The beast in Lord of the Flies essays (2) Trace the references to the beast in the novel. Try to parallel this with the diminishing sense of order on the island and the boys gradual embracing of Jacks savagery. What is the true nature of the beast on the island that Simon in unable to verbally define? In the novel, there are many references to the beast. Each one illustrates the gradual decline of humanity, and the rising of savagery. Simon is the only boy on the island who truly understands what is controlling the boys on this island, yet he cannot express his thoughts into words clearly, and ends up being killed for even trying. In the beginning, the fear of a "beastie" on the island first stems from a littlun with a distinctive marking, a "mulberry-colored birthmark" on his face, who says the beast comes out at night. Both Ralph and Jack, thinking these to be simply childish nightmares, comfort and more or less manage to convince everyone that there is no beast. It is this same mulberry birthmarked boy, who disappears after the boys' first fire burns out of control across the island. Even though he had probably died in the fire, his disappearance was something that no one had ever accounted for, as no one knew the exact answer. This would have probably led to further speculations about whether there is a beast on the island. Ralph still retains control of the boys, and manages to maintain order. Fear of the beast has not diminished. Instead, that fear has intensified in strength amongst the littluns. Simon brings this to Ralph and Jacks attention when he comments that the children are afraid of the beast as if the beastie or the snake-thing was real. Here, Ralph begins to take this problem more seriously, for he sees its potential to become a full-blown issue, and raises it at the next assembly. The beast has now become a topic of discussion during assembly and the boys now openly express their fears. Simon has bee...

Idioms and Expressions - Come

Idioms and Expressions - Come The following idioms and expressions use the verb come. Each idiom or expression has a definition and two example sentences to help understanding of these common idiomatic expressions with come. You can also learn idioms in context with these stories, or learn further expressions with these idiom resources on the site.   Come apart at the seams completely lose emotional control Theres no need to come apart at the seams. Things will get better.On hearing of the death of his friend, Peter came apart at the seams. Come away empty-handed return from a meeting, situation or other event without any gain We came away empty-handed from the negotiations.The competition was so intense that our company came away empty-handed. Come by something travel by means of some vehicle We came by train.Did you come by plane or by car? Come down in the world lose financial or social prestige and position Im afraid Tom has come down in the world. Lifes been pretty hard for him lately.I think youre taking too much risk. You might come down in the world. Come full circle return to an original state At first life was very difficult for Jane. However, things eventually came full circle and she returned to power.Looks like things have come full circle! How does it feel? Come in out of the rain start paying attention to a situation If he doesnt come in out of the rain, things will get out of control.Alex, come in out of the rain! Open your eyes to what is happening! Come into ones own begin having success and satisfaction in life Since he was appointed to vice-president, hes really come into his own.Keep working hard. One day youll come into your own. Come of age reach maturity required to do something such as marry, drink, vote, etc. You can have a beer once you come of age.When this generation comes of age, theyll be more ecologically alert. Come out ahead to be in a position of profit, or advantage after an event It was difficult, but in the end we came out ahead.Yes, higher education is expensive. However, in the end, youll come out ahead. Come to a bad end end in disaster Im afraid Jack has come to a bad end.If you dont change your behavior, youll come to a bad end. Come to a dead end arrive at an impasse in a situation, not be able to move forward Well have to rethink everything. Weve come to absolute dead end.They changed strategies once they came to a dead end. Come to a head reach a point of crisis when action is called for Things are coming to a head, we have to make a decision.I think everything will come to a head next month. Come to an untimely end die before your time His crazy driving brought him to an untimely end.She came to an untimely end last year. Come to a standstill not able to make any progress forward Can you help me? Ive come to a standstill on this project.We came to a standstill and had to rethink everything. Come to grips with something deal with something difficult Ill have to come to grips with this problem if I want to succeed.I think you first need to come to grips with his complaints before you move forward. Come to light become known A number of facts have come to light which change everything.A new solution has come to light. Come to ones senses begin thinking clearly about a situation Alan, come to your senses! Its not going to happen.She finally came to her senses and left her husband. Come to pass to occur Everything I had predicted came to pass.The prophecy has come to pass. Come true Become real Hard work and patience can help make your dreams come true.Did his plans come true?