Sunday, October 20, 2019
Bottle Balloon Blow-Up Experiment
Bottle Balloon Blow-Up Experiment à If your child liked the Exploding Sandwich Bag Science Experiment or tried the Antacid Rocket Experiment, sheââ¬â¢s really going to like Bottle Balloon Blow-Up experiments, although she might be a little disappointed when she finds out the only thing getting blown up is the balloon.à Once she realizes that none of the various forces used to blow up the balloons in these experiments require her to use air from her lungs, sheââ¬â¢ll be intrigued.à Note:à Thisà experimentà work best with latex balloons, but if any of your participants have using a different balloon will suffice. What Your Child Will Learn (or Practice) The power of carbon dioxide gasThe power of air pressure Materials Needed: An empty water bottleA medium or large balloonA funnelVinegarBaking soda Create a Hypothesis This particular version of the experiment shows how the chemical reaction created by combining baking soda and vinegar is powerful enough to blow up a balloon.à Talk with your child to see if she can predict what will happen when you combine baking soda and vinegar. If sheââ¬â¢s ever seen a science-fair volcano, remind her that these are the ingredients used in the volcano. Ask her to predict what will happen if you combine these ingredients when instead of leaving a hole in the top you cover the bottle with a balloon. The Baking Soda Balloon Blow-Up Experiment Fill a water bottle one-third full of vinegar.Put a funnel in the neck of a balloon, and hold onto the balloon neck and funnel. Have your child pours in enough baking soda to fill the balloon halfway.Slide the funnel out of the balloon and have your child hold the portion of the balloon with the baking soda in it down and to the side. Stretch the neck of the balloon over the neck of the water bottle securely.à Be careful not to let any of the baking soda fall into the bottle!Ask your child to slowly hold the balloon over the water bottle to let the baking soda pour inside.Continue to hold tight to the neck of the balloon, but move to the side listen and watch the bottle carefully. You should hear fizzing and crackling noises as the baking soda and vinegar solution activates. The balloon should begin to inflate. Whatââ¬â¢s Going On: When baking soda and vinegar are combined, the acetic acid in the vinegar breaks down the baking soda (calcium carbonate) into the basics of its chemical composition. The carbon combines with the oxygen in the bottle to create carbon dioxide gas. The gas rises, canââ¬â¢t escape from the bottle and goes into the balloon to blow it up. Extend the Learning Experiment with different size bottles (half-size water bottles, liter bottles, or two-liter soda bottles, etc.) and balloons to see if the amount of oxygen in the bottle makes a difference in how fully the balloon expands. Does the size or weight of the balloon make a difference, too?Try varying the sizes of balloons and bottles and doing the experiment side by side with the variables changed. Which balloon blows up fuller? Which balloon fills up faster? What was the influencing factor?Use more vinegar or baking soda and see what happens. As a last experiment, you can also let go of the balloon when the baking soda drops into the vinegar. What happens? Does the balloon still blow up? Does it shoot across the room?
Saturday, October 19, 2019
Crowdfunding in Nigeria Literature review Example | Topics and Well Written Essays - 6000 words - 1
Crowdfunding in Nigeria - Literature review Example This has become a very popular method of raising funds for any time of project but little is known about the motivation and interest of the people donating on the crowdfunding platforms (Fowler, 2007). According to Hemer (2011), the crowdfunding has been defined as the process that involves the making an open call through the medium of internet for provision of the financial resources. These can take the form of rewards in exchange of some form of voting right or equity in the organization. Hemer (2011), further argues that although the crowd funding was in existence in the late 1990 and was largely used on the internet, it was limited to the to get funding for activities in the creative industries that included making of videos or film Publishing by the independent writers and journalist other people in the theatres, visual arts and games. However, the development in the recent times brought by the invention of new tools like the Web 2.0 and social media and networking sites has con tributed to the use the viral networking and marketing (Lee, DeWester and Park, 2008). This has attracted a huge number of people in the to some web communities that is of interest to them within a very short time (Crowdsourcing.org. 2012). Although the crowdfunding has only attracted the scholarly investigation in the recent times, the concept is an old age one that has been practiced in some societies. An example of early application of crowdfunding is seen in the building of the Pedestal for the statue of liberty. This statue was established in1884 by Joseph Pulitzer, who had made an open call to the people in America provide the micro donations to fund the project (pritts, 2010). The online funding is otherwise a new concept that is has been greatly boosted by the development of the Web 2.0 technology (Lee, DeWester, and Park, 2008). This has resulted in the establishment of more crowd funding
Consumption Essay Example | Topics and Well Written Essays - 500 words
Consumption - Essay Example If 50% of the group said they liked it and the other 50% were undecided the company if anything would just make the fish flavored soda a special one time a year specialty. I think products drive consumer behavior because if one is a faithful buyer they will tend to go out their way or spend a little more money to get what they want. If they are really dedicated to the point of no return they will search out times, dates, and even locations of their favorite products. This behavior has even driven some people to over stock and go into debt as a product collector. Which brings us back to my first point that without the consumer there is no product. A marketer should put a lot of decision on his market research findings because this is what lets him know if his product is good or not. It's his or her window to world in a way, it lets them know whether their product is marketable weather it should be a certain price and who exactly is buying their products so they know how to market it. Every now and again you have a company that will take a long shot chance and sometimes they do good and sometimes they do horrible but the companies that use the research findings are most protected it's their umbrella in the customer rain storm. The other factors that should be taken into account are emplo
Friday, October 18, 2019
Principles of Structural Design Essay Example | Topics and Well Written Essays - 3750 words
Principles of Structural Design - Essay Example Analysis of a structural collapse involves the study of the basic architectural principles, properties and operation of the different components of the structure, as well as knowledge of different possible causes of structural failure. The Seongsu Bridge is 11th bridge constructed over the Han River in Seoul, South Korea. Construction of this cantilever bridge was set about on April 9, 1977 and completed on October 15, 1979, 2 years and 6 months later. It was a four-lane bridge with 19.4m width and 1,160.8m length [20]. It became infamous when it collapsed on October 21, 1994. The bridge collapsed early in the morning when one of its concrete slabs fell in to river due to a failure of the suspension structure. Around 07:40 hours on October 21, 1994, Seongsu Bridge connecting Seongsu-dong and Apgujeong-dong of Gangnam-gu, Seoul, collapsed. The slab (48 m) between the fifth and the sixth leg of the Bridge collapsed so 32 people died and 17 people were injured while they were on the way to office or school. Seongsu Bridge is one part of arterial road that connects the Kanan district which is residential section in the southern in Seoul City and city center of Seoul City, and its has a lot of traffic volume. The steel truss digit division where the accident occurred was the 672m length, and it was one of the suspension digits of the center part. ... In addition, Seongsu Bridge complained that it had been trembling in motion, so the authorities in Seoul City also carried out the repair work of the emergency in the night in accident the previous day. It was said that the traffic jam arose, because especially, it was for commutation attending school hour in the accident-generation, and because the rain fell, the rolling stock was crowded [20]. Cause of collapse: Various reasons can be associated with the collapse of bridge. Major of them are as listed below [19]: Bad welding of the suspension which member of the I-type cross section, which was hanging the suspension digit of the center from the steel truss, seems to be a main cause. There was visibility cutting corners between surface and splice plate of the fillet welding, so construction management and inspection method in the construction of Seongsu Bridge seemed to be remarkably slipshod. Calcium chloride, which was scattered in order to prevent the road surface freezing, chloride ingress was uppued for the cracks by poor weld or stress corrosion, and so that the corrosion of steel product might be promoted. There is a possibility to produce unexpected partial cracks in the steel surface because in the cross-sectional shape of suspension steel product, the cone angle ( the relaxation curved surface ) for easing stress concentration was insufficient. Though there is no error at the content for the design, there was some possibility that the immature construction level was not sufficiently assumed. There were no technical standards on in-service maintenance repair of Seongsu Bridge. Because of the fiscal resource constraint (budget) of Seongsu Bridge while it was in service, the periodic check was
Marketing Mix of Domino's pizza Case Study Example | Topics and Well Written Essays - 1500 words
Marketing Mix of Domino's pizza - Case Study Example This research will begin with the statement that in the United Kingdom, the number of the fast food and home delivery restaurants including McDonalds, KFC AND Dominoââ¬â¢s Pizza continues to increase rapidly as is the trend for the past five years. The restaurant's explosion in the high-street outlets represents the lucrative feature of the industry, constituting the resulting large amount of competition in the market. The increased competition is a factor notable as a cause for the increased value of sales as experienced by the various participants in the industry. This implies that the consumer has a better access to the restaurants, as they facilitate the services to the customers. However, recent developments in the industry, entailing the increased negative publicity in the market presents a remarkable challenge to the success of the operators. Consequently, the restaurants sought to dispel these trials in the market. Thus, Dominoââ¬â¢s Pizza as a leading operator in the m arket, sought the establishment of strategic procedures to counter the issue. Further, their strategy also sought to engage the customers accordingly, increasing the revenue from sales, as well as, facilitating the expansive operations of the business, taking it to the top in the leading operators in the market. This procedural engagement by Dominoââ¬â¢s Pizza entailed the establishment of 7Pââ¬â¢s of the marketing mix, in their procedural engagement of the customers and establishment of services.
Thursday, October 17, 2019
Abraham Lincoln and the Civil War Essay Example | Topics and Well Written Essays - 750 words
Abraham Lincoln and the Civil War - Essay Example This has been an argument for the root cause of the Civil War by many. However, high taxes alone were not enough of a catalyst to start a war. Others maintain that the reason was states right, the right for states to own slaves. Free labor drove the Southern economy. Without slavery the white privileged would go broke or worse, have to work themselves. Besides; what to do with all the freed blacks? Southerners were not ready to have blacks as neighbors and were frightened of retribution. Poverty and fear are reasons to start a war. Abraham Lincolnââ¬â¢s Emancipation Proclamation is remembered by history as an altruistic humanitarian effort but it was more a brilliant tactical move. History did get the importance aspect right, the slaves were freed, the union preserved and Lincoln the architect of it all during the most tumultuous time in American history. It was about slavery. Southern states thought of Lincoln as ââ¬Å"an obscure and illiterate manâ⬠whose ââ¬Å"opinions a nd purposes are hostile to slavery.â⬠(Ball, 2010). As each state formerly left the Union it cited slavery as the main reason for secession. Hard-line secessionists were rightfully convinced that Lincolnââ¬â¢s election would result in the freeing of slaves. Known as ââ¬ËFire-eaters,ââ¬â¢ they used shame and fear to convince wavering Southerners of their stance, that slave-owning states had no choice but to form their own country. ââ¬Å"Resistance or submissionâ⬠was the fire-eaters rallying cry. Southerners were implored to defend their rights. Those who resisted were publicly humiliated, branded as cowards. Events such as John Brownââ¬â¢s Raid helped the fire-eaters to convince people to join their cause. Panicky white men joined vigilante groups which targeted Northern sympathizers and former slaves meaning, to them, any black person. (Barney, 2004). Prior to the start of the Civil War Kansas experienced the wrath of fire-eaters paramilitary terrorist groups when its citizens were deciding whether or not to become a slave state. They used intimidation as a tactic to get the desired results. In retribution for their reign of terror, John Brown led a group of men who killed five pro-slavery settlers then stole guns from the military at Harperââ¬â¢s Ferry so to continue the fight but were stopped prior to committing more killings. Coincidentally, Brown and his followers were captured by future commanding Confederate General Robert E. Lee who was leading a group of marines at the time. (KEDT, 1999). Unfortunately for Brown his actions ultimately led to his execution by hanging and generated greater support for the pro-slavery faction. Lincoln was an adamant believer in the idea of the U.S., in democracy and individual freedom. He wanted America to be the shining example for other nations to follow. He knew that if the country became divided it would be widely perceived that the grand experiment of democracy didnââ¬â¢t work, a travest y on a worldwide, historic scale. Lincoln insisted that ââ¬Å"the unity of the nation must be maintained. If the nation breaks up, the democratic mission is dead.â⬠(Coker, 2013). As late as 1860 Lincoln said that blacks were entitled to some rights but not to vote or hold office. He had strongly suggested blacks be sent to live elsewhere, ââ¬Ërounded upââ¬â¢ so to speak but with the War still very much anybodyââ¬â¢s to win and enthusiasm waning, Lincoln needed a new strategy. He added a new element to the struggle by proclaiming all slaves free in 1862. It was now society against society in addition to army against army, a battle of conscience fought alongside a battle of weapons; the former Lincoln thought he was surer to win. He was never considered a military genius but demonstrated his
Compare and contrast research method Paper Example | Topics and Well Written Essays - 1500 words
Compare and contrast method - Research Paper Example There are over twenty different types of research methods, but the ones discussed in this paper include focus group method, ethnography methods, in-depth interview, participant observation methods, action research methods, and bibliographic method. Reconciliation Focus Group Methods Focus group is a type of group interview that focuses on communication between interviewees to generate data. Unlike group interviews that are often used to collect data from several individuals simultaneously, focus group usually involves group interaction as part of the method. This implies that a researcher does not ask each person to respond to a question in turn, but encourages people to ask each other question, exchange ideas, comment on other peopleââ¬â¢s perception and experiences (Chilisa, 2011). This research method is valid for exploring personsââ¬â¢ experiences and knowledge. The focus group method is based on the idea that group interactions can help people to clarify and explore their views and experiences in a manner that would not have been possible with a one-on-one interview (Liamputtong, 2011). The questionnaires used in focus group method have a series of open ended questions and encourages interviewees to answer the questions in their own styles, and even generate further questions and pursue their own priorities. Focus group method helps researchers to include the different forms of communication that people use in their day to day interaction, including arguing, jokes, teasing, and anecdotes. Accessing such forms of communication is significant because the intervieweesââ¬â¢ attitudes and knowledge are not restricted in reasoned responses to present the questions (Faherty, 2009). This is what distinguishes focus group methods from other forms of qualitative research methods. Its other advantages include: it does not discriminate against persons who cannot write and read; it encourages participation from individuals who are reluctant to be interviewed a nd encourages participation from persons who feels that they have nothing to say (Faherty, 2009). The downside of this method is that articulation of group norms may derails individual voices of dissent. Additionally, the presence of a group may also compromise the confidentiality of the research process. In the business field, focus group methods are useful when conducting studies that focus on empowering employees. The employees are allowed to share their ideas and present a report about their findings. The results obtained are then used to implement that change required, which is believed to favor all employees (Ozerdem, 2010). Ethnography Ethnography is the study of social behaviors, perceptions and interactions, which occur in organizations, communities, groups, and teams. It primarily focuses on providing rich and holistic insights into an individualââ¬â¢s actions and perceptions, including the nature of the location they occupy, through the collection of detailed interview s and observations (Scott-Jones & Watt, 2010). Ethnographers typically collect participantsââ¬â¢ observations, and encourage direct involvement and engagement with the samples they are studying. During research processes, ethnographers usually use conversational and informal interviews that enable them to probe and discuss emerging issues, or pose questions about unusual events, in a
Subscribe to:
Posts (Atom)