Work, Power and Energy Transfer Questions and Answers

Work, Power and Energy Transfer Questions and Answers Amy Harris   Task 1 Packing cases of mass 25kg are to be pushed onto a ramp by use of a  hydraulic ram as shown above. The coefficients of static and dynamic friction  between the box and surface are 0.7 and 0.4 respectively. Assuming uniform  acceleration at all stages. Calculate: a) The maximum force required in the ram to push the crate onto the slope  with an acceleration of 0.25ms b) The velocity of the crate as it leaves the top part of the ramp assuming  this part of the movement takes 1 second. c) The velocity of the crate at the bottom of the ramp d) The distance travelled after leaving the ramp and continuing in a straight  line (assume a smooth curve at the bottom of the slope). e) The total time for the entire movement of the crate. Corrections to Task 1: Task 2 A pile driver hammer of mass 300kg is raised to a height of 3.5m before being released. If there is no rebound after impact with a pile of mass 500kg and the pile is driven 0.1m into the ground, Calculate: a) The initial potential energy of the hammer before release. b) The velocity of the hammer immediately before impact c) The velocity of the hammer and pile immediately after impact d) The deceleration of the pile assuming it is uniform e) The ground resistance Corrections to Task 2: Task 3 Find the velocity of the hammer immediately before impact for the problem given in Q2 above using DAlemberts Principle and write a report comparing it with the conservation of energy method previously used. How do the two methods differ and what were the discrepancies in the results? The DAlemberts Principle can; in some parts, be very similar to the second law motion which Newton introduced. He thought that the law could be rewritten so that we can achieve the appearance of an equilibrium. This principle was made by Jean le Rond dAlembert, he was a French mathematician in the 18th century. It is explained as reducing a problem in dynamics to a problem in statics (The Editors of Encyclopaedia Britannica, 2016). I found that when referring to the time derivatives of the momenta of the system (Wikipedia, June 2016) DAlemberts principle shows this equation F-ma=0 (The Editors of Encyclopedia Britannica, 2016). I researched this formula and found that F=ma'(classes R., no date) and newtons second law states that F= mg (Kearsley, no date) This means that when no external force is present we may use the formula mg-ma=0. Dalemberts principle is different to the conservation of energy method as dalemberts uses the equilibrium of forces when referring to a dynamic system and the conservation of energy method states that in a closed dynamic system the energy total equals zero. They may differ sometimes as they are dealing with different values to come out with the answer, also aspects such as human error when rounding comes into play as a small rounding error can sometimes affect the answer. The conservation of energy method is used more than the that of DAlemberts, perhaps because it is not often that a system is balanced completely which is when DAlemberts is used. The answer I got is the same as I do with the other method, this shows that this method can be used to prove the answer found in task 2.          Bibliography The Editors of Encyclopaedia Britannica (20 July 1998) DAlemberts Principle [online] Available: https://www.britannica.com/science/dAlemberts-principle [Accessed 24/11/2016] The Editors of Encyclopà ¦dia Britannica (1998) DAlemberts principle | physics, in Encyclopà ¦dia Britannica [online] Available at: https://www.britannica.com/science/dAlemberts-principle [Accessed: 22/02/2017] Classes, R. (no date) Dalemberts Principle [online]Available at: http://kestrel.nmt.edu/~raymond/classes/ph321/notes/dalembert/dalembert.pdf [Accessed: 22/02/2017] References: The Editors of Encyclopaedia Britannica (20 July 1998) DAlemberts Principle [online] Available: https://www.britannica.com/science/dAlemberts-principle[Accessed 24/11/2016] The Editors of Encyclopà ¦dia Britannica (1998) DAlemberts principle | physics, in Encyclopà ¦dia Britannica [online] Available at: https://www.britannica.com/science/dAlemberts-principle [Accessed: 22 February 2017] Kearsley (no date) Forces [online] Available at: http://www.mrkearsley.com/notes/physics-forces.pdf [Accessed: 2 March 2017]   

Implement person centred approaches Essay

1.1 Define person-centred values Person-centred is about providing care and support that is centred or focused on the individual and their need There are eight person centred values that support person-centred care and support: Individuality, Independence, Privacy, Choice, Dignity, Rights 1.2 Explain why it is important to work in a way that embeds person centred values. Taking into account person centred values, rather than imposing my own choices on them and taking away their own right to independence and choice. It is important to do this as person centred approaches, policies and procedures, as well as care practices should always put the people whom we support at the centre of the day-to-day activities, as well as including the residents and their families in the planning and maintaining of this. 1.3 Explain why risk-taking can be part of a person centred approach. Risk-taking means being aware of the potential hazards, but still carrying on with the activity. Risk Assessment Processes include: visual check, recorded risk assessments. If you were no longer allowed to take risks that means you can’t progress in anything. Risk is about learning! Your inner questions. Can I do it? Can I REALLY do it? To take risk is all about challenge! 1.4 Explain how using an individual’s care plan contributes to working in a person centred way It is document where day to day requirements and preferences for care and support are detailed. Using an individual’s care plan where own needs and wishes are being met, rather than offering them a ‘choice’ of what is available. Using their care plan, you can build on what they want and see where there are gaps that need to be addressed. 3.1 Explain the importance of establishing consent when providing care or support. Consent is agreement to an action i.e. in social care agreeing to a bath or a shower, to medication, agreement to have details shared with others. Lack of consent could be construed as abuse i.e. forcing an  individual to have a shower when they have not agreed. Consent can be in different forms like – Verbal – written – via a representative or advocate. It is important to establish consent because it is a basic human right for everyone to have the choice. 3.3 Explain what steps to take if consent cannot be readily established. Steps to take when consent cannot be established include, not continuing with the task, reporting to the supervisor or manager, recording the information 4.1 Describe how active participation benefits an individual. Active participation is a way of working that recognises an individual’s right to participate in the activities and relationships of everyday life as independently as possible. 4.2 Identify possible barriers to active participation. Barriers include: lack of opportunity, lack of events, lack of staff, unwillingness of residents, and lack of confidence. Ways of encouraging residents include: discussion and encouragement with the individual, providing useful information, using friends and family to encourage, ensuring appropriate activities, peer-group encouragement, persuasion techniques, highlighting the benefits of the activity 5.3 Explain why a worker’s personal views should not influence an individual’s choices. A personal view should not influence individual choices as everyone is an individual in their own right and therefore should be able to make their own choices as their interest would be different to a staff. 5.4 Describe how to support an individual to question or challenge decisions concerning them that are made by others. Different approaches for individual, discussion, providing relevant, information, guidance from friends or family using an advocate or support service. We can also challenge decision where we can encourage questions and comments, be prepared to listen, assist the individual to ask for a second opinion, speak  to/refer the individual to a senior member of staff, use the complaints procedure 6.1 Explain how individual identity and self esteem are linked with well-being Well-being may include aspects that are: Spiritual – Emotional – Cultural – Religious – Social – Political – Sexual – Physical – Mental. Individual identity and self-esteem are linked with well-being as everyone has their own interests and what one person may find interesting another person may not find interesting, for example, some residents like gardening and some don’t and we should never force anyone to do what they don’t like or don’t want to do. 6.2 Describe attitudes and approaches that are likely to promote an individual’s well-being Attitudes and approaches that are likely to promote an individual’s well-being include: being treated as an Individual, dignity – respect, choices and good communication. It can also be environmental which includes physical environment – bedroom, handbag, personal belongings, and social environment – personal boundaries, subjective feelings.

Giorgio Armani: Elegance Without Excess.

GIORGIO ARMANI: Elegance Without Excess. Giorgio Armani is a household name synonymous with not only style and design but also incredible corporate success and branding. The fashion house of Armani is reportedly the most financially successful Italy has ever produced. The master tailor first made headlines by redefining the rules of precision and reinventing the tailored jacket. For Armani, simplicity is key. This doesn’t only apply to his unparalleled craftsmanship and subtle ingenuity however, but also his image and personal life. Unlike many established designers, the name Giorgio Armani bears relatively little published material to his work, as well as no serious in-depth analysis of his aesthetic. Born in Picanza in 1934, there had always been early evidence of the Giorgio Armani prodigy. A sensitive and unusually fastidious child, Armani enjoyed a stable childhood in a hardworking middleclass family. His mother was a great influence in his life, as she dressed elegantly but disdained fashion. It was not surprising to learn that her favourite colours were cream, white, taupe and grey – colours that we know today represent signature Armani. He completed his studies at the University of Bologna, after which he took a job as an assistant window dresser, and then a fashion buyer, in 1954. In 1960s, he worked at menswear company Nino Cerruti as a designer, where he developed his knowledge and understanding of tailoring, fabrics and production. It was a decade later that he met Sergio Galeotti, his partner, with whom he launched his first collection. A pioneer of the fashion industry of the 20th century in many respects, Giorgio Armani himself is the epitome of etiquette, poise and grace – highly reflective in his designs. The Armani loyalty began with the design of the menswear tuxedo, applauded for its timeless elegance and superb fit. To wear Armani was to reflect self-confidence, power, and elegant ease. To many, it represents a status symbol. Despite this haute position in luxury, Giorgio Ar mani did not design for the traditional, and his designs were far from untouchable. He was in fact highly adamant in the notion of wearability, and the importance of being in tune with the times. He considers it an achievement to design clothes for everyday, as that’s how he believes fashion should be in relation to its consumer – accessible, and comfortable. A signature Armani garment should not only portray elegance, but also comfort. Armani gained his fame as he challenged the ideas of rigid jackets – as well as rigid ideals. He redesigned the menswear blazer so that it patterned much simpler, with no lining, no padding, and most importantly, no stiffness. He also extended its length, slimming lapels and creating baggy pockets to give a more modern, refined illusion. As the popularity of signature Armani skyrocketed, so did his reputation and following. It was not long before women were insistent for these menswear elements in their clothing; thus was born the Giorgio Armani Womenswear line. He deconstructed the man’s jacket and reconstructed it on the more curvaceous lines of a womens body, offering the working woman (a new concept at the time) a symbiosis of understatement and sensuality, femininity and power-dressing. Timing was perfect. People were overcoming the â€Å"Flowerpower† phase and Armani facilitated the gap by giving women clothing that was more adapted to the future. It was Armani that developed the concept of androgyny. Armani, quite plainly, redefined early ready to wear with his radically simplistic ideas. He contrasted overdramatized French fashion with more classic Italian fashion, claiming that wome n need a lot less in their clothing these days. The Armani vision was to eliminate the superfluous, emphasize the comfortable, and stress the harmony of the most essential details – in design, materials as well as cut. With his debut of WRTW he intended to create clothing that truly reflected the lives of the women who wear it – real women. Before Giorgio Armani, fashion was constricted, not easy, and outdated. In the world of Mr. Armani, practical and co mfortable are two words that remains an illustration of important fashion prerequisites. Through his childhood Armani had developed a love of textiles. He thus emphasized the importance of quality fabrics. Leather, linen, silk and textural weaves became inherent in his designs. The Armani colour palette rom birth has always been a combination of understated sophistication, bearing a predominant blend of muted and neutral hues. Fascinated by fabrics, he consistently played with the notions of masculinity and femininity. His craftsmanship was immaculate, and he eventually reigned in the indulgence and luxury of eveningwear. The 1970s proved to be a year of success for Armani, as it was around this time that his designs were first brought into the U. S via Barneys New York. His success in the city that never sleeps cemented his future. While Europe was still set on traditional ideals, the American consumer was significantly more open-minded and experimental. Till today, Giorgio Armani says that the American woman was his first client, as his silhouette depicted the casual feeling of American tailoring and fabrication. By 1999, the Giorgio Armani brand had 250 stores on five continents. His knack for business led him to lead the company on a more corporate wavelength. Armani today comprises of several lines, 9 fragrances, and a range of licenses in products from watches to umbrellas. Many of the lines Armani designs for are run rather commercially, where he bases much creativity according to the market. Regardless, Giorgio Armani consistently manages to maintain his design and style philosophy while simultaneously keeping fresh and current. Despite evolving trends and commercial/market demand, Armani has always been loyal to his elegant, timeless aesthetic. While he acknowledges fashion, he is not dominated by the need of novelty in every collection – and remains a critique of the flamboyancies and increased sexuality of the works of his industry peers. The key to his inspiration behind each collection was â€Å"renewal without rejecting the past†. Despite his love for the simplistic 30s and 40s, an era he was always influenced by, he began to play with various ethnicities and cultures in his designs. Giorgio Armani was always fascinated by the orient, fond of the pureness, colours and hues of the Japanese culture. He believes that touches of ethnicity soften the rigidity of a garment, adding to his vision of a women’s relationship to her clothes – the fulfillment of a dream.

How Do Dolphins Go to Sleep

Dolphins cant breathe underwater, so every time a dolphin needs to breathe, it has to make the decision to come to the water surface to breathe and supply its lungs with oxygen. Yet a dolphin might only be able to hold its breath for about 15 to 17 minutes. So how do they sleep? Half of Their Brain At a Time Dolphins sleep by resting half of their brain at a time. This is called unihemispheric sleep. The brain waves of captive dolphins that are sleeping show that one side of the dolphins brain is awake while the other is in a deep sleep, called slow-wave sleep. Also, during this time, the eye opposite the sleeping half of the brain is open while the other eye is closed. Unihemispheric sleep was thought to have evolved due to the dolphins need to breathe at the surface, but may also be necessary for protection against predators, the need for toothed whales to stay within their tightly-knit pods, and for regulation of their internal body temperature. Dolphin Mothers and Calves Get Little Sleep Unihemispheric sleep is advantageous to mother dolphins and their calves. Dolphin calves are especially vulnerable to predators such as sharks  and also need to be near their mothers to nurse, so it would be dangerous for dolphin mothers and calves to fall into a full deep sleep like humans do. A 2005 study on captive bottlenose dolphin and orca mothers and calves showed that, at least when  at the surface, both mom and calf appeared awake 24 hours a day during the first month of the calfs life. Also during this lengthy time period, both eyes of the mom and calf were open, indicating that they werent even sleeping dolphin-style. Gradually, as the calf grew, sleep would increase in both the mom and calf. This study was questioned later, as it involved pairs that were only observed at the surface. A 2007 study, though, showed a complete disappearance of rest at the surface for a minimum of 2 months after the calf was born, although occasionally the mother or calf were observed with an eye closed. This may mean that dolphin mothers and calves engage in deep sleep in the early months after birth, but it is for only brief periods. So it appears that early in the dolphins life, neither mothers nor calves get much sleep. Parents: sound familiar? Dolphins Can Stay Alert for at Least 15 Days As mentioned above, unihemispheric sleep also allows dolphins to monitor their environment constantly. A study published in 2012 by Brian Branstetter and colleagues showed that ​dolphins can remain alert for up to 15 days. This study initially involved two dolphins, a female named Say and a male named Nay, who were taught to echolocate to find targets in a pen. When they identified the target correctly, they were rewarded. Once trained, the dolphins were asked to identify targets over longer periods of time. During one study, they performed the tasks for 5 days straight with extraordinary accuracy. The female dolphin was more accurate than the male—the researchers commented in their paper that, subjectively, they thought this was personality-related, as Say seemed more eager to participate in the study. Say was subsequently used for a longer study, which was planned for 30 days but was cut off due to an impending storm. Before the study was concluded, however, Say accurately identified the targets for 15 days, demonstrating that she could perform this activity for a long period of time without interruption. This was thought to be due to her ability to get rest through unihemispheric sleep while still remaining focused on the task she needed to perform. The researchers suggested that a similar experiment should be done while also recording the dolphins brain activity while the tasks are being performed to see if they engage in sleep. Unihemispheric Sleep in Other Animals Unihemispheric sleep has also been observed in other cetaceans (e.g., baleen whales), plus manatees, some pinnipeds, and birds. This type of sleep may offer hope for humans  who have sleep difficulties. This sleep behavior seems amazing to us, who are used to — and usually need to — fall into an unconscious state for several hours each day to recover our brains and bodies. But, as it was stated in the study by Branstetter and colleagues: If dolphins sleep like terrestrial animals, they might drown. If dolphins fail to maintain vigilance, they become susceptible to predation. As a result, the apparent extreme capabilities these animals possess are likely to be quite normal, unspectacular and necessary for survival from the dolphins perspective. Have a good nights sleep! Sources and Further Reading Ballie, R. 2001. Animal Sleep Studies Offer Hope for Humans. Monitor on Psychology, October 2001, Vol 32, No. 9.  Ã¯ » ¿Branstetter, B.K., Finneran, J.J., Fletcher, E.A., Weisman, B.C. and S.H. Ridgway. 2012. Dolphins Can Maintain Vigilant Behavior through Echolocation for 15 Days Without Interruption or Cognitive Impairment. PLOS One.  Hager, E. 2005. Baby Dolphins Dont Sleep. UCLA Brain Research Institute.  Lyamin O, Pryaslova J, Kosenko P, Siegel J. 2007. Behavioral Aspects of Sleep in Bottlenose Dolphin Mothers and Their Calves. National Center for Biotechnology Information, U.S. National Library of Medicine.