Friday, December 27, 2019

Why Do Ping Pong Balls Burn Chemistry QA

Old ping pong or table tennis balls would sometimes combust or explode when hit, which made for an exciting game! Modern balls are less sensitive, but if you take a lighter to a ping pong ball, it will burst into flame, burning like a tiny flamethrower. Do you know why ping pong balls burn? Heres the answer. Some people think ping pong balls must be filled with some flammable gas, but they only contain regular air. The secret to the spectacular way they burn is in the composition of the actual ball. Ping pong balls burn because they are composed of celluloid, which is like gun cotton or nitrocellulose. Its extremely flammable. The old balls consisted of acidified celluloid, which became increasingly unstable over time. The slightest spark or heat from friction could ignite these balls. How to Ignite a Ping Pong Ball You can try this project yourself. All you need is: ping pong balllong-handled lighterfire-safe surface If you look around online, youll see people lighting ping pong balls while holding them. Usually what they are doing is lighting the ball from the top. No matter where you light it, most of the heat escapes above the ball, but they burn so rapidly, its a bad idea to try to hold one. Youll almost certainly burn yourself, plus you could catch your clothes or hair on fire. Also, there is a chance the ball could explode, which would spread the flame and may result in injury.A better way to light a ping pong ball is to set it on a fire safe surface (e.g., metal bowl, brick) and light it with a long-handled lighter. The flame shoots up fairly high, so dont lean over it and do keep it away from anything flammable. Its best to do this outdoors unless you want your smoke alarm to go off.A variation of the project is to cut a hole in a ping pong ball and light it from the inside with a match. The ball will disintegrate while you watch. How Ping Pong Balls Are Made A regulation ping pong ball is a 40 mm diameter ball with a mass of 2.7 grams and a coefficient of restitution of 0.89 to 0.92. The ball is filled with air and has a matte finish. The material of a regular ball isnt specified, but balls typically are made from celluloid or another plastic. The celluloid is a composition of nitrocellulose and camphor that is produced in a sheet and soaked in a hot alcohol solution until it is soft. The sheet is pressed into hemisphere molds, trimmed, and allowed to harden. Two hemispheres are glued together using an alcohol-based adhesive and the balls are machine-agitated to smooth the seams. Balls are graded according to how evenly weighted they are and how smooth they are. Part of the reason people may think the balls are filled with a gas other than air is that the plastic and adhesive off-gas into the interior of the ping pong ball, leaving it with a chemical odor, similar to that of photographic film or modeling glue. Based on the likely composi tion of the residue, reports that inhaling the gas inside a ping pong ball produces a high may be justified, but the vapors almost certainly are toxic, even though the ping pong ball itself is not. While there is no rule that the balls be filled with air, its the simplest means of manufacturing them and there hasnt been a reason to form the balls filled with other gases. Watch a video of this project. Disclaimer: Please be advised that the content provided by our website is for EDUCATIONAL PURPOSES ONLY. Fireworks and the chemicals contained within them are dangerous and should always be handled with care and used with common sense. By using this website you acknowledge that ThoughtCo., its parent About, Inc. (a/k/a Dotdash), and IAC/InterActive Corp. shall have no liability for any damages, injuries, or other legal matters caused by your use of fireworks or the knowledge or application of the information on this website. The providers of this content specifically do not condone using fireworks for disruptive, unsafe, illegal, or destructive purposes. You are responsible for following all applicable laws before using or applying the information provided on this website.

Thursday, December 19, 2019

American History Life After the Declaration of...

Introduction Since the Declaration of Independence was drafted founding itself on individual privileges and choice, happiness and democracy, a multitude of concerns have kindled the rights disputes that we see making law an active and continually growing and interesting area of interest today. Issues arose included women suffrage, civil equality, slavery, the ability to hold a religious forum, along with many others. And, though the context and times have significantly changed with these concerns there still remains a constant struggle between state, religion, and schools. Prayer in public schools is still a topic of conversation. The giving of religious gifts to administrators and the funding of schools through tax-payer monies are†¦show more content†¦With this portion of response including the metaphor wall of separation, it is this figure of speech that historians have concluded to be the surrounding justification of what is currently utilized throughout the findings of courts and moral explanation of the separation of church and state as we currently know it today. However, even that assumption has been challenged on several levels from Chief Justice’s findings of various Supreme Court cases, including Justice Hugo Black’s restatement in the 1947 Everson decision, to the scholarly reflection of numerous university faculties attempting to prove point for rationale of a lesson delivery at the public university level (Hemmer, 2009; Araujo, 2013). Regardless of how the phrase and the autonomy of the First Amendment is challenged, religion and the need to maintain separation of church and state has been a great contest of the United States legal systems. The court system typically will remove itself from decisions within the higher education institution and leave such decisions to the administrators themselves to make the best decision for the organization, unless those topics in question legitimately violate a federal statute or clause related t o the Constitution directly (McFarlane, 2012). Therefore, we will examine the application of the First Amendment within higher education. First AmendmentShow MoreRelatedThe Declaration Of Independence1330 Words   |  6 Pagescertain unalienable rights; that among these are life, liberty, and the pursuit of happiness. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed... 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There comes a moment when the will of a handful of a Fre eman breaks through the determination and opens up the roads. Human history has always been filled with individual liberty ideas. Liberty is known to be the idea that is firmly held by men in their hearts, as they were willing to fight or even die for it. It was an ecstatic feeling when they finally achieved it. The people had an idea of a constitutional freedom and the moral quality, which was strongly held inRead MoreHistory : The American Revolution1442 Words   |  6 PagesHistory never teaches fatalism. There comes a moment when the will of a handful of a Freeman breaks through the determination and opens up the roads. Human history has always been filled with individual liberty ideas. Liberty is known to be the idea that is firmly held by men in their hearts, as they were willing to fight or even die for it. It was an ecstatic feeling when they finally achieved it. 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Wednesday, December 11, 2019

Ideas of insecurity Essay Example For Students

Ideas of insecurity Essay Leah Price is one of two twins born to Orealeanna and Nathan Price.. Her twin sister, Adah, has been physically handicapped since birth. Leah seems to be feeling responsible for this when she says on page 241 that . Leah also seems somewhat jealous of the fact that Adah, despite being physically challenged, she seems to be smarter than Leah, a quicker learner, one might say. An example is of the languages. Adah picked up on French and also on the dialect of Kilanga faster than Leah did, and because of this, takes it somewhat offensively. Leah is quite idealistic and passionate towards her family, especially her father. She always tries to be on his good side by helping him in the garden and with other such errands. Leah tries to follow in her fathers footsteps as much as possible, and this can be seen on page 244 when she says which implies that she always trusted his decision . However, upto that point, she seemed very narrow minded, believing her father was right about everything. She believed that the Congolese people would die and go to hell without the help of God, and her father was doing the right job and was persistent with the messages. However, when she sees her mother get out of bed after about a month of sickness and sees her go against her fathers authority, she realizes how short sighted and narrow minded she really was. This is seen when she says I doubted his decisionI wanted to believe himBut where is the place for girls in that Kingdom? The rules dont apply to us, nor protect us eitherTheres a grea t holy war going on in my fathers mind. She realizes that there is a world of insecurity out there in the world. This whole transformation Leah goes through makes her realize that her mother was right to flout her fathers authority. Leah is a quick learner in general and is also quite idealistic as she follows all her fathers sayings upto that particular point. She realizes that she is confronted with injustice of being a woman, racism because she is white and an African culture she admires instead of hates, despite her fathers practice. Leah is compassionate and has a sort of survivors guilt towards Adah for her physical handicap. She has lost basically all faith in her father due to the new ideas of her mother. She realizes that she has finally been set free by that revelation.

Tuesday, December 3, 2019

Problem identification and formulation styles in Walmarts organization

In the current work environment, it is of essence for leaders of organizations to apply various problem identification and formulation styles as they assist in quick and efficient solving of problems in organizations. At Walmarts organization, the management practices four different decision making styles.Advertising We will write a custom essay sample on Problem identification and formulation styles in Walmarts organization specifically for you for only $16.05 $11/page Learn More First, is collective participative decision making style in which the manager collects all the relevant information needed and other viewpoints from the members of the company; however, he or she maintains the control of the decision to be made and is responsible for the final course of action taken (Verma, 2009). The advantage of this decision making style is that there is a sense of involvement which can cushion against potential negative impacts and this strategy also enable s the manager to be well informed before making a decision. Further, the most favorable aspect of the collective participative decision style is that it can be used to identity and solve the new reality that is currently facing Walmarts organization: its clients need more than just the lowest price. Thus, the strategy can be used to improve the organization’s services to its clients. Nonetheless, a major weakness of this decision making style is that it can be slow and time intensive process, especially when the organization is large. Second, is the autocratic decision making style in which the manager is held accountable for the final course taken and his or her own inclinations and knowledge are used to make the final decision (Lussier, 2008). In this case, the manager does not seek for viewpoints from the members of the organization since the responsibility is wholly endowed upon him or her. A major strength of this style is that it is important in emergencies since it is a quick way of reaching at conclusions. On the other hand, its major weakness is that the members are not incorporated and they can be offended by the choice made if they are negatively impacted; consequently, this can make the manager to lose support and credibility. A problem that can be identified and described using this style is a situation in which a manager at Walmart decides to give back a client his money after complaining bitterly about a product he bought at the store. Third, is the democratic decision making style in which the manager transfers the responsibility of making a decision to the group and votes are cast to determine the course of action to be taken judging from the choice with the highest votes. The main advantage of this style is that the decision is made fast and all the members are included in the process. However, there may be no responsibility taken for the course of action preferred since the manager is not accountable and the members can claim that the y did not support the choice made. Nonetheless, this style can be useful in describing a decision taken to introduce Walmart’s new advertising motto, â€Å"Save Money Live Better,† to replace the previous motto.Advertising Looking for essay on business economics? Let's see if we can help you! Get your first paper with 15% OFF Learn More Lastly, consensus decision making style incorporates the participation of every member of the organization and the manager is no longer responsible for the course of action taken and its impacts since he or she transfers control to the members of the group. In favor of this style is that it allows for group dedication, team spirit, and varied ideas to be shared that increases the chances of a good decision to be made. A major inhibitory factor here is that the vast amount of information collected and input involved may make the process to be tiresome and time consuming. A problem that can be addressed favorably by this st yle is a situation in which some employees at Walmart are to be moved to one of its new stores in a low-income area. Reference List Lussier, R. N. (2008). Management fundamentals: concepts, applications, skill  development. Mason, OH : South-Western/Cengage Learning. Verma, D. (2009). Decision-making style: social and creative dimension. New Delhi: Global India Publications. This essay on Problem identification and formulation styles in Walmarts organization was written and submitted by user Alberto Boyle to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.