Persuasive essay on school uniforms Essay

Nearly all students do not support school uniforms; however they do not know the benefits in wearing them. Believe it or not, there are a lot more pros than cons when it comes to wearing school uniforms. First off, school uniforms will develop a better teaching and learning environment. They will also save families a good deal of money. And lastly, school uniforms will eliminate a lot of bulling and labeling. A school would be a better place, for teachers and students, if school uniforms were required. The most important benefit of school uniforms is the atmosphere it would create. With school uniforms kids couldn’t wear anything outrageous or abstract. This would limit distractions in the classroom, producing a better teaching and learning zone. Also, school uniforms would make for a better student teacher relationship because everyone would be looked at as an equal. Another distraction uniforms could remove is the problem with females wearing reveling clothing. Lastly, a majority of students can take up thirty minutes picking out there clothes for the next day. If uniforms were mandatory that time could be used to do school work or get a better night sleep for the following day. Read more: Should there be school uniforms essay Families would save an unbelievable amount of money from school uniforms. Students wouldn’t have to worry about buying the newest, hippest clothes which cost a fortune. That would save families hundreds of dollars. Sure, kids would still need clothes other than their uniform, but not as many. Families would also be more time efficient with uniforms. One example of this would be a smaller laundry load. In addition, you wouldn’t need to worry about rushing to get something washed for the next day because you already know what you will be wearing. Bulling and labeling would be cut down if school uniforms were accepted by a school system. If uniforms were mandatory everyone would be equal and no biases could be set by someone’s apparel. Like wise, students couldn’t label someone as a scrub or high maintenance. When someone gets picked on, it is most likely because they are wearing something that is â€Å"not in† or because they are dressed â€Å"different†. If school uniforms were worn this would be a non-issue. Lastly, you couldn’t be labeled regarding your personal  interests. For example, if you were wearing a band’s tee-shirt or a preppy clothing line. If this wasn’t and concern everyone would be open to each other and groups wouldn’t be made based on what you are wearing. The only reason Student do not wish to wear uniforms is because they only care about looking good. However, they don’t know they can till look good in a school uniforms. Also, much more students would be open to school uniforms if they knew all the success they would get from them. Student and staff would have a much better school year if school uniforms were worn.

Top 20 Best Summer Jobs for Recent Graduates

Top 20 Best Summer Jobs for Recent Graduates looking for a way to maximize your hireability come graduation time? the best strategy is to get a job or an internship related to the field you want to work in. but if that isn’t an option for you, then you want to maximize learning stuff and making money- while still leaving you time to, you know, have a summer. some of the most successful people in the world have a story or two about the crappy job they worked over a summer or two of their adolescence. here are 20  of the best possible options for you to mull over as you dust off your summer wardrobe:sales- no matter what you’re selling, these skills will come seriously in handy over the course of your career.post office worker- this one comes with surprisingly good pay, and guaranteed time outdoors!national park servicescamp counselors- pay isn’t great, but accommodation and food (and beautiful natural surroundings!) are usually freeresort or country club- you get paid to be by the beach or the pool or the golf course.tour guiderestaurant jobsweb designtutoring- set your own hours and make bank.telemarketing- same as sales; you do have to be that annoying person on the phone, but if you have a knack for it, you’ll  earn a lot of cash.campus jobs/working in the labs or libraries- check your university for openings.construction workervaletpet and house sittingwriting articles for sites that will pay youconvention worker- anything cool coming to your town? get involved.landscapinglifeguardsdog walkerbarista

How does the viscosity of a liquid affect the flow of a sphere through it Essays

How does the viscosity of a liquid affect the flow of a sphere through it Essays How does the viscosity of a liquid affect the flow of a sphere through it Essay How does the viscosity of a liquid affect the flow of a sphere through it Essay The resistance offered by a liquid/fluid (gases and liquids) on a moving object inside it is called viscosity. The flow of liquid occurs as the movement of layers at different speeds which in turn lead to a gradient of speeds and friction among them respectively.Stokes LawThe viscous force offered by a fluid on a ball is directly proportional to the radius of the ball and its speed at a given instant.F is proportional to rF is proportional to vF is proportional to rvK=6= coefficient of viscosityF= 6 ? ? r vF=Frictional Force?= coefficient of viscosityR=Radius of the SphereV=Velocity of the Sphere? =F/6?rv = N/mms-1 =Nm-2s =Pa sI believe that the density of the liquid will be directly proportional to the time taken for the sphere to drop.Viscosity of various fluidsFluidViscosity (Pa s)Hydrogen8.410-6Air17.410-6Xenon2.1210-5(Room temperature)Blood3x10-3Castor oil0.985Glycerol1.5Mercury1.510-3Water8.9410-4Up thrust (U)When an object is fully or partially immersed in a fluid, the fluid exerts a force on the object upwards.Archimedes PrincipleThe up thrust acting on an object that is partially or fully immersed in a fluid, is equal to the weight of the displaced liquid.Up thrust= the upward force on the object.According to Archimedes Principle,Up thrust= Weight of the displaced liquid.= Mass of the displaced liquid x g= Volume of the displaced liquid x density of liquid x gU= v p gU= Up thrustV= VolumeP=DensityG=Gravity on kgm3-1The motion of a sphere inside a viscous liquidWhen a sphere is moving inside a liquid, three forces are acting on it:Weight downwards,Up thrust and Viscous Force upwards.Since F= 6 ? ? r v, the viscous force is increasing with the speed.Since F is increasing, at some point the sum of U and F is going to be equal to W.At this point the resultant force on the sphere is zero, therefore, according to F=MA, a=0, that means the sphere moves at constant speed. This is called the Terminal Velocity.When the sphere is moving at terminal velocity, W= U+F.?= 2r2 g (d-p)/9vtD=density of the sphereP=density of the liquidThe density of the sphere and pulp must be calculated separately using the formula:Density=Mass /VolumeTo find vt, the speed of the sphere must be measured during few intervals to make sure it has reached the terminal velocity.Then the experiment can be repeated to study the change in viscosity with the concentration of the pulp.AimTo find the time taken for a sphere to fall through several viscous liquids and liquids with different concentrations of viscosity.Diagram/EquipmentMethodI filled up the cylinder container with the viscous liquid, which is wallpaper paste (mixed together beforehand).I then placed the sphere on the surface of the liquid.When I let go of the sphere I started the timer.When the sphere reached the bottom, I stopped the timer.Using a ruler I measured the distance travelled.Using Distance / Time I got the speed of the sphere, and the terminal velocity at each 10cm interva l.I then repeated the experiment.PreliminaryIn my preliminary experiment, I tested out different sphere sizes and also the maximum and minimum concentrations of the viscous solutions, so I would know which quantities would be best to use.The diameter of the sphere I chose was 1.3cm, as it was small enough to travel at a constant rate through the liquid.The minimum concentration contained 8g of wallpaper paste in 600ml of water, as it was just viscous enough to take a reading. The maximum was 26g of paste, because after that the sphere doesnt move at all.Results = First ExperimentInterval (cm)Water (ml)Density (kgml-1)Time 1 (Sec)Time 2 (Sec)Time 3 (Sec)Average Time (Sec)1020Total5000.9744s104s146s44s105s145s45s102s146s145.6s1020Total5100.9518396618406717386666.3s1020Total5200.9413355812351.0014335858.6s1020Total5300.9361624717248162424.0s1020Total5400.914101551115491414.6s1020Total5500.9038133713481313.0s1020Total5600.8937103710461110.3s1020Total5700.882572583677.3s1020Total5800.872 462562445.3s1020Total5900.861241241233.7s17g PasteChanging Water from 500ml upwardsResults = Second ExperimentPaste (g)Density (kgml-1)Time 1 (Sec)Time 2 (Sec)Time 3 (Sec)Average Time (Sec)80.970.410.370.380.38100.960.370.340.430.38120.960.440.500.500.48140.950.630.680.650.65160.951.281.501.281.35180.944.185.416.535.37600ml WaterChanging Paste from 8g upwardsThe graph for the first experiment shows that as Density increases, so does time, though they are not directly proportional because they dont go up in equal amounts. There is also an anomaly, which could have been caused by human or systematic error.For the second experiment the graph is quite different. This shows that as Density increases, time actually decreases. So the two quantities are inversely related. There is a constant pattern at first, but then due to human and systematic error there are a few anomalies.Evaluation/ConclusionYou can see from the first graph that density and time are directly proportional, so as one go es up so does the other. This shows that the relationship between density and time is valid.For the second graph, the two quantities are inversely related. This is because for that one the liquid is getting more viscous, so slowing down the sphere.To improve the experiment I could take better precautions to reduce the errors, especially the human errors as they can be prevented more easily.I could have tried to find out my reaction time and eliminate that from the time to make it more accurate.Some of the limitations are that you cant use very big objects, because they wont fit through the cylinder, and also different shapes, because they have sides of different areas.

History Of Bullet Proof Vests

History Of Bullet Proof Vests Humans throughout recorded history have used various types of materials as body armor to protect themselves from injury in combat and other dangerous situations. The first protective clothing and shields were made from animal skins. As civilizations became more advanced, wooden shields and then metal shields came into use. Eventually, metal was also used as body armor, what we now refer to as the suit of armor associated with the knights of the Middle Ages. However, with the invention of firearms around 1500, metal body armor became ineffective. Then only real protection available against firearms were stone walls or natural barriers such as rocks, trees, and ditches. Soft Body Armor One of the first recorded instances of the use of soft body armor was by the medieval Japanese, who used armor manufactured from silk. It was not until the late 19th century that the first use of soft body armor in the United States was recorded. At that time, the military explored the possibility of using soft body armor manufactured from silk. The project even attracted congressional attention after the assassination of President William McKinley in 1901. While the garments were shown to be effective against low-velocity bullets, those traveling at 400 feet per second or less, they did not offer protection against the new generation of handgun ammunition being introduced at that time. Ammunition that traveled at velocities of more than 600 feet per second. This, along with the prohibitive cost of silk made the concept unacceptable. Silk armor of this type was said to have been worn by Archduke Francis Ferdinand of Austria when he was killed by a shot to the head, thereby precipitat ing World War I. Early Bullet Proof Vests Patents The U.S. Patent and Trademark Office lists records dating back to 1919 for various designs of bulletproof vests and body armor type garments. One of the first documented instances where such a garment was demonstrated for use by law enforcement officers was detailed in the April 2, 1931, edition of the Washington, D.C., Evening Star, where a bulletproof vest was demonstrated to members of the Metropolitan Police Department. Flak Jacket The next generation of the anti-ballistic bullet proof vest was the World War II flak jacket made from ballistic nylon. The flak jacket provided protection primarily from ammunition fragments and was ineffective against most pistol and rifle threats. Flak jackets were also very cumbersome and bulky. Lightweight Body Armor It would not be until the late 1960s that new fibers were discovered that made todays modern generation of cancelable body armor possible. The National Institute of Justice or NIJ initiated a research program to investigate the development of lightweight body armor that on-duty policemen could wear full time. The investigation readily identified new materials that could be woven into a lightweight fabric with excellent ballistic resistant properties. Performance standards were set that defined ballistic resistant requirements for police body armor. Kevlar In the 1970s, one of the most significant achievements in the development of body armor was the invention of DuPonts Kevlar ballistic fabric. Ironically, the fabric was originally intended to replace steel belting in vehicle tires. The development of kevlar body armor by NIJ was a four-phase effort that took place over several years. The first phase involved testing kevlar fabric to determine whether it could stop a lead bullet. The second phase involved determining the number of layers of material necessary to prevent penetration by bullets of varying speeds and calibers and developing a prototype vest that would protect officers against the most common threats: the 38 Special and the 22 Long Rifle bullets. Researching Kevlar Bullet Proof Vests By 1973, researchers at the Armys Edgewood Arsenal responsible for the bulletproof vest design had developed a garment made of seven layers of Kevlar fabric for use in field trials. It was determined that the penetration resistance of Kevlar was degraded when wet. The bullet resistant properties of the fabric also diminished upon exposure to ultraviolet light, including sunlight. Dry-cleaning agents and bleach also had a negative effect on the antiballistic properties of the fabric, as did repeated washing. To protect against these problems, the vest was designed with waterproofing, as well as with fabric coverings to prevent exposure to sunlight and other degrading agents. Medical Testing of Body Armor The third phase of the initiative involved extensive medical testing,  to determine the performance level of body armor that would be necessary to save police officers lives. It was clear to researchers that even when a bullet was stopped by the flexible fabric, the impact and resulting trauma from the bullet would leave a severe bruise at a minimum and, at worst, could kill by damaging critical organs. Subsequently, army scientists designed tests to determine the effects of blunt trauma, which is injuries suffered from forces created by the bullet impacting the armor. A byproduct of the research on blunt trauma was the improvement of tests that measure blood gasses, which indicate the extent of injuries to the lungs. The final phase involved monitoring the armors wearability and effectiveness. An initial test in three cities determined that the vest was wearable, it did not cause undue stress or pressure on the torso, and it did not prevent the normal body movement necessary for police work. In 1975, an extensive field test of the new Kevlar body armor was conducted, with 15 urban police departments cooperating. Each department served a population larger than 250,000, and each had experienced officer assault rates higher than the national average. The tests involved 5,000 garments, including 800 purchased from commercial sources. Among the factors evaluated were comfort ​when worn for a full working day, its adaptability in extremes of temperature, and its durability through long periods of use. The demonstration project armor issued by NIJ was designed to ensure a 95 percent probability of survival after being hit with a .38 caliber bullet at a velocity of 800 ft/s. Furthermore, the probability of requiring surgery if hit by a projectile was to be 10 percent or less. A final report released in 1976 concluded that the new ballistic material was effective in providing a bullet resistant garment that was light and wearable for full-time use. Private industry was quick to recognize the potential market for the new generation of body armor, and body armor became commercially available in quantity even before the NIJ demonstration program.

The Phenomenon of Georgia OKeeffe Research Paper

The Phenomenon of Georgia OKeeffe - Research Paper Example With the combination of thin paint and her natural ideas put O'Keeffe years ahead of her time. O'Keeffe ancestors were of Irish and Hungarian origin. She grew as a thoughtful child who did things in a manner that was her own way. She decided to become a painter at a very early age and she said "That was the thing I can do the best because that was nobody else's business." Georgia O'Keeffe was a teenager when she moved to Williamsburg with her parents. At Williamsburg she attended the CPEI "Chatham Protestant Episcopal Institute" from where she graduated in the year 1905. In 1907 she joined Art Institute at Chicago and in the same year she also joined the Art Students League at New York. Her artistic ability developed when she started to draw the paintings using oil paint on the piece of canvas. She made a famous oil painting of "Dead Rabbit with Copper Pot." As a result scholarship was awarded to her and it was an early indication of O'Keeffe being a genius. (Weingarten, & Higgerson, 2001) This gave Georgia a sense of achievement as she felt her work very different from the other still painters of her time and the ones before her. For a very brief period she worked as a freelance commercial artist in the city of Chicago. Later she became an arts teacher at Chicago and considered this work to be more pliable. In the year 1914, she became supervisor of art for all the public schools in the city of Amarillo, Texas. In 1920 she became head of the department of art at the College of Normal in Canyon, Texas. (Weingarten, & Higgerson, 2001) In this period O'Keeffe stop painting for a while and studied the art theories of "Arthur Wesley Dow" who was a famous lecturer of art at the University of Columbia. Georgia learned to find and create two dimensional reality in pictorial art. Dow also taught her that these realities must be based on pure aesthetic principles and taught her that composition of pictorial art should be abstract and it must be based on color, line, dark masses and light, symmetry and repetition. O'Keeffe also learned that all these things are important along with solitude, state of isolation and emotional ferment. Georgia O'Keeffe Life in New York Georgia O'Keeffe had a boyfriend with whom she had a conflict over something and that gave her some personal touch in the field of art. All these factors contributed in starting full time painting once again. She experimented with watercolors, oil paints and also the drawing using charcoal. In 1915 Georgia mailed few of her charcoal drawings to her friend who lived in New York. These charcoal drawings brought her artistic immortality. The reason for this was that her friend showed these drawing to Alfred Stieglitz, who was a renowned photographer. Alfred Stieglitz exhibited all these drawing at "Art Gallery 291" on 5th Avenue in New York. These drawing drew the attention of general public. As a reticent person O'Keeffe went to New York to oppose the display of her drawings and demanded an immediate removal. However Stieglitz persuaded her and he wanted these paintings to remain and also wanted her to continue her carrier for her own interest in abstract designs. (Reily, 2007) The d esigns used by Georgia were bud-like forms which where rounded and jagged between undulating

Misogynistic portrayals of women in Othello Essay

Misogynistic portrayals of women in Othello - Essay Example In Shakespeares celebrated play Othello we find three women who play vital role. Towards the end of the play we find that only one woman survives. All the three women are deprived of an identity in the play. We find that all the three women are either married or maintaining relationship with a male. During the time when the play was written, women exercised no power in the society. The Venetian society maintained a hierarchy in which men possessed all powers and women were considered inferior to men. In Othello we find Bianca, Emilia, and Desdemona being in relation with the male characters Cassio, Iago and Othello. In those days women were considered as creatures with no intellectual power. However we find that the women characters of the play speak sense throughout the play. Women characters are also found trusting other characters. All the women characters of the play represent a specific social level. Desdemona represents the highest social level and Bianca represents the lowest social level. Each sexual relationship initiates some feeling of jealousy between the couple. Bianca is not frequently found in the play like other characters. However, her presence is crucial in the matter of death of Desdemona and other crucial matters. Iago considers her as a prostitute. Even though she fell in love with Cassio, we never find Cassio acknowledging her affection because of his desire for status. He knew that her social standing would highly influence this matter. She is found to be extremely jealous in this relationship. We find Iago using Bianca’s name to trigger the entire confusion in the play. This finally led to the tragedy end of the play. Regarding Emilia we find that she never questions Iago when she gives handkerchief to him. This shows the women’s ability to trust. However she is also found to be ignorant of the whole story till the end of the play. Her life comes to a sudden end, in the hands of her husband. She

The Power of Advertising in Modern Society Essay

The Power of Advertising in Modern Society - Essay Example The power of advertisements is immediately linked to their use of imagery and their sponsorship of commercial media. While the majority express a dismissive attitude towards advertisements and claim to be unaffected by them, available figures support an alternate reality. Steinberg emphasises this point when highlighting the financial resources which companies set aside for advertisements per season. In 2008, 30-second Super Bowl ads sold for $3 million (para 1). As exorbitant as this figure may sound, every single ad spot was sold and networks were pressured to provide more advertising slots. The reason, as Steinberg explains, is that advertising makes financial sense. The Super Bowl, for example, is viewed by almost 100 million people across the United States, with the implication being that Super Bowl ads give companies the opportunity to deliver their commercial message to 100 million people in just 30 seconds (Steinberg, para 6-8). Within the context of the stated, the $3 million figure is an investment in the popularisation of a brand/product and an attempt to persuade 100 million people to, at least, consider purchase. Accordingly, while most claim that they are unaffected by advertisements, the sums which companies invest in the purchase of prime-time advertisement spots tells a very different story. The power of advertisements does not only derive from their primetime placement but from their use of imagery. ... 185-186). For example, the images which Calvin Klein employs in its jeans ads are not just selected for the purpose of depicting the product but of portraying all that which may potentially be associated with the product. This includes sex appeal, charisma and an aura of success and popularity, among others. The point here is that the power of an advertisement and its ability to attract the attention of consumers is almost entirely dependant upon its use and selection of visuals. The fact that advertisements draw their power from images, rather than words, maximises their appeal and potential for attraction. As may be inferred from Moeller's analysis of the importance of imagery, the power of images lies in that they are open to interpretation and that viewers can, to an extent, impose their on meanings and values upon them (para 5-9). Unlike words where meaning is explicitly state, leaving little for the imposition of subjective interpretations, images provide viewers with the freedom to impose their own meaning and interpretations upon them. The implication here is that visuals can be personalized. Hence, the power of ads does not simply derive from the images which they use but from the fact that viewers have the freedom to impose personal meanings upon these images. Whether or not people choose to openly admit it, ads wield power. The imagery which they use influences our perceptions and their very presence provides us with media content. As Steve Hall explains, the production of media content is very costly and corporations only undertake the expenses involved for the purposes of profiting. Insofar as television content is concerned, whether sporting events or popular serials, advertisements cover the costs and generate the profits