The efficiency of an eElectric motor Essay Example for Free

The efficiency of an eElectric motor Essay The efficiency of the motor in experiment 2 does decrease linearly with increasing mass as I predicted. Ideally the two graphs should follow each other since I used the same motor in each experiment. However from my graph you can see that my calculated efficiency for the second experiment is consistently about 9% higher than the calculated efficiency from my first experiment. This difference has probably been caused by the inaccuracy of the joule meter. This is inconsistent with my results from my calibration experiment. They showed that the joule meter always records more energy that it is receives and therefore if I correct my results for experiment 2 it would make the motor even more efficient. However the linear sections of the graphs have the same gradient and this shows that in both experiments the efficiency is varying in the same way. Extension: Aim: To measuring the efficiency of the electric motor as a generator and to establish if the system is time reversible. The experiment: See Diagram for circuit digarm. Experimental method: I will dropped a variety of weights a distance of 1. 12m and then I recorded the amount of electrical energy produced by the motor using the joule meter Acknowledged Errors 1. The inaccuracy of the joule meter-however I can use my calibration curve to correct for this 2. Friction in the pulley system 3. The weight has kinetic energy when I hits the ground and this energy is lost from the system thus reducing the efficiency of the generator. My Results: H=1. 12m load=10. 3 ohms Mass (kg) Average Time for full drop(s) Joules recorded Exp1x10 Joules recorded Exp2x10 Average number of joules recordedx10 %E. Energy Input (J) Graph: Explaining the graph: The energy I put in the generator is dissipated in three ways. 1. Useful energy is dissipated in the load 2. Energy is lost in the friction of the pulley system 3. When current flows through the internal resistance of the motor energy is lost 4. Energy is lost when the weight I drop hits the flaw It follows that because energy is conserved: The Potential energy of the weight= Power dissipated in load + Work done against friction +Energy Lost in the motors resistance +Energy lost as the weight hits the floor M=mass, I=current, F=friction force, R=resistance, V=final speed of weight In my analysis I have chosen to ignore the energy lost in the internal resistance of the motor. This is sensible since the energy lost in the internal resistance was insignificant compared to the energy lost in the load. To further simplify things I will also ignore the energy lost as the weight hits the ground. This factor was very small because my weights travelled quite slowly and they had small masses. Simplified formula for analysis: Efficiency If you assume that the work done against friction is constant this formula explains the 1-1/x form of my graph. For small weights the generator is inefficient since most of the weights potential energy is being used to overcome friction. For small the second term of the formula is large and the generator is therefore inefficient. This is shown by my graph. For large weights the work done against friction becomes insignificant and consequently the generator becomes more increasingly more efficient. For larger the second term would tend to zero and the efficiency should tend to 100%. My results do show that the efficiency increases for heavier weights however my results appear to approach an efficiency of 14% not 100%. This difference may be caused by the fact that for my larger weight the energy lost in the motors resistance and the energy lost as the weight hit the floor become significant. The inaccuracy of the joule meter may have also contributed to this difference. Is a the motor time reversible If my motor was time reversible it should behave in the same way irrespective of the direction of time. For example if you use electrical energy lift a weight with a motor if the system is time reversible you should be able to get the electrical energy back by dropping the weight. A motor is obviously time reversible to an extent since it can be used both as a motor and a generator. However my results show that for my experiment you are only able to retrieve a small fraction of the energy you used lifting when using the motor as a generator (about 2. 5 joules out of 150 or 2%). This inefficiency can be partially explained by considering the parts of the system that are not time reversible. This includes the friction in the system and the energy lost in the internal resistance of the motor. Here energy is lost as heat and sound that cannot be retrieved. Conclusion: In general my experiments went well and I was able to use my result to make some useful conclusions. I was very pleased with the accuracy of my results. If I had more time I would have taken more experimental reading so that I could get a more complete picture of what was happening. I would also have spent more time calibrating the joule meter since its inaccuracy had a large effect on my results. Bibliography: Sources used: 1) Nuffield Advanced Science Physics student guide 2 unit H to L, Published by Longman, ISBN=0-582-35416-1 2) Web page: Motors URL=www. srl. gatech. edu/education/ME3110/design-reports/RSVP/DR4/Motors. http 3) Encyclopaedia Britannica CD-ROM 4) Encarta 99 CD-ROM by Microsoft Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Immigrant Workers in Phoenix :: Immigration Labor Immigrants Essays Papers

Immigrant Workers in Phoenix Before the sun even rises in Phoenix, out of the closing shadows of night, dark and quiet silhouettes begin to appear. They are the silhouettes of working men who rise before the sun rises, each with the hope of obtaining work and earning money to help support their families. These men are usually assumed to be immigrants without the proper paperwork to work in the United States. They are also better known as day laborers. These so-called â€Å"day laborers† congregate on street corners or in the parking lots of builders’ stores awaiting the arrival of employers who will hire them for a day’s work. Some cities have tried to ban this type of â€Å"recruiting† while others have accepted it as inevitable. In Phoenix alone there are an estimated 2,500 day laborers ready, willing and able to work each and every day that stand on street corners hoping and praying they will be picked up by someone to work. Some days their prayers are answered and on others they are not. Before September 11, 2001, you saw them everywhere – in hard hats on construction sites, working as landscapers, painters and just about anything else one can imagine. Today, these migrant workers are struggling under a sputtering economy and the harsh glare of the escalating U.S. homeland security system. To add even more problems to their already full plate, the immigration service in Phoenix is warning contractors against hiring undocumented day laborers. The warnings are taking a toll on many laborers in north Phoenix who had been getting constant work. â€Å"I’ve worked only two days since last week† said Ruben Fuentes, a native of Tijuana. At the break of dawn on a Tuesday morning, the 20-year-old Fuentes joined dozens of others at the corner of Greenway Road and 29th Street to wait for someone to pick them up. â€Å"It’s getting harder,† he added and from my viewpoint, it looked like more men were left standing than were picked up for work on the day I chose to visit. Unfortunately for everyone, contractors could face fines of up to $1,000 for each occurrence if they fail to fill out the proper immigration forms by the end of the workday said Victor Brower, deputy assistant district director for the Immigration and Naturalization Service in Phoenix.

Utilizing Online Social Networking Sites Paper

Utilizing Online Social Networking Sites Paper Class: BSHS/352 Technology is constantly expanding and making it easier and more convenient to communicate and network with individuals and various organizations that we may not otherwise of had the opportunity to connect with. One area of technology that is growing at a fast rate and offering individuals and businesses, rather it be their professional life or personal the opportunity to make lasting connections is social networking sites. Social networking has become an excellent tool for businesses and individuals to connect and share information that can prove vital to their business.Sites like Facebook and LinkedIn are becoming popular and are an effective way to grow your business whether it is through networking with similar organizations and getting beneficial information from them or expanding your cliental by reaching out to those who may need or want your services. LinkedIn has become a vital tool used by the working profession al, assisting them with making connections or linking up with other working professional to share what work and what doesn’t work as well as connecting them with local or online support groups or networking groups.Members of LinkedIn are able to create a profile that gives a detail list of their educational background as well as their work experience. Users are able to browse the social networking site to view the profiles of other individuals, organizations, or companies within their field and follow the organization of choice and their postings. My ultimate dream is to create a nonprofit organization that is geared toward targeting at risk youth and their families.The whole concept is to help the whole family and not just focus your attention on the youth that may be having emotional or behavioral issues but offer mental and emotional support for the entire family, implementing various programs and workshops that will assist the entire family in growing, working, and playin g together. Networking sites like LinkedIn can prove to be vital as I take the steps necessary to make this dream a reality. As I was browsing through the site I came across a few groups in my local area that met up monthly for lunch to discuss the ideas and challenges of those looking to start a nonprofit.I also took the time to search for companies or organizations that were geared toward working with and advocating for children. I was really quite excited to be able to look at their profile, view their web pages and doing so helped me to get some ideas and get my juices flowing. I have considered making connections with the various organizations I have seen on LinkedIn in hope that they could link me to information, people, and training opportunities that could possibly put me one step closer to my dream.I am also interested in going to the next luncheon for nonprofit communicators in Raleigh just to get feedback regarding my idea and you never know someone at one of these lunche ons could either help me get closer to making my dream a reality or can link me to an individual or organization who can. I have found sites such as LinkedIn can prove to be extremely beneficial in making lasting connections within the business community and it gives those with businesses the opportunity to link up with other businesses to get feedback, advice, and possibly connect you with someone who can help you take your organization or company to the next level.This site also enables professionals to come together with the common ground of helping and motivating each other. Within the human service field this site can connect you to so many resources that can only assist in providing your clients with the ultimate experience. Having a site where human service workers from all fields and from all areas can come together online and share their experience, advice, and resources can prove to be helpful to the community as a whole.LinkedIn not only connect likeminded people but it o ffers an opportunity to share information regarding training and workshops that could assist organizations in staying up to date with the latest software and/or regulations. Such training and workshops can keep your organization competitive and allows you to offer your clients the best possible service. The best way to keep any business or organization growing is to continue to gain knowledge in your particular field.Always be willing and open to learning and growing, this is what the training and workshops are there for to assist businesses and organizations in improving their techniques and staying relevant and competitive. Sites such as LinkedIn can offer you the ability to gain knowledge and training from some very successful people. Human service workers who use online social networking sites such as LinkedIn can find being affiliated with professional groups and connections to offer more than just sharing experiences, advice, training, and connections to resources.Another bene fit to being a part of an online community such as LinkedIn is the ability to request referrals from the connections you met online. Users can also request sponsorships or recommendations from other users. Human service workers who are affiliated with sites such as LinkedIn may also be able to connect with local churches that could assist connecting the human service worker to the communities that need their assistance the most. Employers often look at profiles on these online social networking sites to assist them in finding employees as well.Although social networking sites such as Facebook and LinkedIn are excellent tools to stay connected to various resources there are other technical tools that can be used to expand and maintain your connections. Smartphones have proven to be a vital tool to use as well with various applications directed at making the life of professionals easier. The goal of a human service worker is to effectively and efficiently assist the client in improvin g their lives and often times this requires connecting them to other resources.Social networking sites such as LinkedIn can assist human service workers in making numerous connections all at the touch of a mouse to various resources and training opportunities. Having online support that provide advice, training, and encouragement, of the human service worker can assist them in helping their clients meet their goals. Reference: 2012. LinkedIn. com. Retrieved from http//www. linkedin. com/home? trk_tab_home_top

We Googled You - Hbr Case Stydy - 5679 Words

www.hbrreprints.org HBR CASE STUDY AND COMMENTARY S hould Fred hire M imi d espite her on line history? Four commentators offer e xpert advice. We Googled You by Diane Coutu †¢ Reprint R0706A Hathaway Jones’s CEO has found a promising candidate to open the company’s flagship store in Shanghai. Should a revelation on the Internet disqualify her now? HBR CASE STUDY We Googled You COPYRIGHT  © 2007 HARVARD BUSINESS SCHOOL PUBLISHING CORPORATION. ALL RIGHTS RESERVED. by Diane Coutu The wind was howling and relentless as Fred Westen opened the door and called upstairs to tell his wife that he was home. While he waited for her to come down, he poured himself a shot of whiskey, tilting the decanter with†¦show more content†¦Bullish on a China Shop Fred left the house at 5:30 AM every day for his ofï ¬ ce at 1 Constitution Road. He had a lot of work to do, and there was not a moment to waste. Despite sales of $5 billion in 2006, Hathaway Jones had fallen on hard times. Four years ago, the privately owned U.S. retail chain had recruited Fred because of his imposing credentials and a lifetime’s experience of working with luxury brands and had charged him with waking up the company’s sleepy, conservative stores. It hadn’t been easy. Though aggressive outsourcing to suppliers in Mexico for some of the chain’s lower-tier brands had helped bring the company’s margins closer to industry standards, that was just a start. An avid consumer of his ï ¬ rm’s marketing research, Fred knew that the company’s image was getting old fast. Younger people across the United States, where Hathaway Jones had 144 shops and outlets, wanted more affordable clothing, with more ï ¬â€šair. The trend was starting to show up in declining numbers for the company’s highpriced—some said stodgy—designer clothes. Plans for radically revamping the company’s image and product line were in the ofï ¬ ng. Fred’s biggest bet, however, was to elbow in on China’s luxury goods market, which was growing by 70% a year. He had earmarked millions of dollars to open new stores in three of the largest cities, including Beijing and

Presidential Retirement Benefits

Presidential retirement benefits were non-existent until the enactment of the Former Presidents Act (FPA) in 1958. Since then, presidential retirement benefits have included a lifetime annual pension, staff and office allowances, travel expenses, Secret Service protection, and more. The FPA was inspired by former President Harry Trumans life of modest means after leaving office. Though Truman lived well more than a decade after the acts passage, it didnt apply him. Former President Dwight D. Eisenhower became its first beneficiary. Pension Former presidents are offered a taxable lifetime pension equal to the annual rate of basic pay for the heads of executive branch departments, like the Cabinet Secretaries. This amount is set annually by Congress and is currently  $210,700  per year. The pension starts the minute the president officially leaves office at noon on Inauguration Day. Widows of former presidents are provided with a $20,000 annual lifetime pension and mailing privileges  unless they choose to waive their right to the pension. In 1974, the Justice Department ruled that presidents who resign from office before their official terms of office expire are entitled to the same lifetime pension and benefits extended to other former presidents. However, presidents who are removed from office due to impeachment forfeit all benefits. Transition Expenses For the first seven months, beginning one month before the January 20 inauguration, former presidents get transition funding to help them transition back into private life. Granted under the Presidential Transition Act, the funds can be used for office space, staff compensation, communications services, and printing and postage associated with the transition. The amount provided is determined by Congress. Staff and Office Allowances Six months after a president leaves office, they get funds for an office staff. During the first 30 months after leaving office, the former president gets a maximum of $150,000 per year for this purpose. Thereafter, the Former Presidents Act stipulates that the aggregate rates of staff compensation for a former president cannot exceed $96,000 annually. Any additional staff costs must be paid for personally by the former president. Former presidents are compensated for office space and office supplies at any location in the United States. Funds for former presidents office space and equipment are authorized annually by Congress as part of the budget for the General Services Administration (GSA). Travel Expenses Under a law enacted in 1968, the GSA makes funds available to former presidents and no more than two of their staff members for travel and related expenses. To be compensated, the travel must be related to the former presidents status as an official representative of the United States government. Travel for pleasure is not compensated. The GSA determines all appropriate costs for travel. Secret Service Protection With the enactment of the Former Presidents Protection Act of 2012 (H.R. 6620), on Jan. 10, 2013, former presidents and their spouses receive Secret Service protection for their lifetimes. Under the Act, protection for the spouses of former presidents terminates in the event of remarriage. Children of former presidents receive protection until they reach age 16. The Former Presidents Protection Act of 2012 reversed a law enacted in 1994 that terminated Secret Service protection for former presidents 10 years after they left office. Richard Nixon is the only former president to have given up his Secret Service protection. He did so in 1985 and paid for his own security, saying his reason was to save the government money. (The savings were estimated to be about $3 million a year.) Medical Expenses Former presidents and their spouses, widows, and minor children are entitled to treatment in military hospitals. Former presidents and their dependents also have the option of enrolling in private health insurance plans at their own expense. State Funerals Former presidents are traditionally granted state funerals with military honors. Details of the funeral are based on the wishes of the former presidents family. Failed Attempt to Cut Retirement In April 2015, Congress passed a bill titled The Presidential Allowance Modernization Act, which would have capped the pensions of all former and future former presidents at $200,000 and removed the current provision in the Former Presidents Act linking presidential pensions to the annual salaries of cabinet secretaries. The bill would have also reduced the other allowances paid to former presidents. Annual pensions and allowances would have been limited to a total of no more than $400,000. But on July 22, 2016, President Barack Obama vetoed the bill stating it â€Å"would impose onerous and unreasonable burdens on the offices of former presidents.† In a press release, the White House added that Obama also objected to provisions of the bill that would â€Å"immediately terminate salaries and all benefits to staffers carrying out the official duties of former presidents—leaving no time or mechanism for them to transition to another payroll.†Ã¢â‚¬â€¹

C C Grocery Case Analysis Essay examples - 1257 Words

C C grocery store currently operates under a goal approach. They were committed to customer service and satisfaction. This approach provided the grocery chain with the profitability and growth they strived to obtain. The stores operative goals were attained and the chain had over 200 stores in operation. For years overall performance for C C was excellent and came with ease. Unfortunately employee development and innovation and change werent a top priority and it began to show. To remain successful C C had to outsource and get advice from a team of consultants. The team dissected the company from top to bottom and advised the chain to implement an internal approach to go along with the goal approach. Implementing the internal†¦show more content†¦The consulting team served as an analyzer and was very beneficial because they also encouraged C C grocery to take on a focus differentiation to gain a competitive advantage. C C should focus on their current customer base but also innovate. More departments (i.e. floral, pharmacy, gourmet/specialty) could be added to the stores to create one-stop shopping. Although they could not lower prices to compete with the Wal-Marts of the world they could venture into new possibilities to create more customer loyalty. For instance, if C C had a pharmacy customers could get their groceries and medicine in one location. Many customers would choose C C grocery over Wal-Mart because of the friendly atmosphere and the stores desire to surpass their current expectations. This could put C C in a realm of its own because larger retail stores have forgotten about customer satisfaction. C C Grocerys been in business for over 50 years and has a great customer base. It is very important for this company to continue to maintain customer loyalty so understanding their desires should be a high priority being that competition is increasing. The Models of Effectiveness Values allows management to take initiative and decide what is important for success and what can handle being a lower priority. In previous years, C C didnt handle human relations in a respectable manner. In order to continue to have customer loyalty and profitability, employee morale is importantShow MoreRelatedPeapod Strategic Marketing1318 Words   |  6 PagesEl Sheikh Ali, Ali. Peapod Case. Page 471-494. Case Analysis I. What is/are the problem(s) / challenges(s) ? 1) Peapod is a challenging and innovative company, that is considering entering the internet market. 2) Therefore the company must put in place its website, and develop a strong network. 3) Strategy, brand positioning and partners are also important challenges facing the company. II. Company Analysis: 1) What is / are the business / mission /Read MoreUsing A Randomized Block Design And Socioeconomic Sequential Testing Essay1727 Words   |  7 Pagesto pursue my other interests. 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Whether cutting the current price by around 50% toRead MoreClass Or Mass : Case Analysis1669 Words   |  7 PagesClass or Mass – Case Analysis By John Scott A. Executive Summary Neptune Gourmet Seafood is facing two major issues – an excess inventory problem and shrinking contribution margins. Due to increased efficiency and investments in technologically advanced ships the company’s finished goods inventory has shot up to a 60 days supply – twice the normal level. In addition, the company’s margins have shrunk by 10% in the past year due to rising costs and growing competition. The company is looking to increaseRead MoreFreshdirect Case Analysis Essay858 Words   |  4 PagesFreshdirect.com, Food and Grocery BACKGROUND/HISTORY Fresh Direct is a company that allows you to order your food online and get next day delivery, their motto is â€Å"Our Food is fresh; our customers are spoiled†¦.. 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Birth Control Options Essay Research Paper Hannah free essay sample

Birth Control Options Essay, Research Paper Hannah Lager P.E. Adolescent Health Issues BIRTH CONTROL OPTIONS Over the old ages, birth control has evolved into an built-in portion of our society. Millions of adult females all over the universe usage some signifier of birth control, and it is turning more popular. There are many different sorts of birth control and it is of import to be informed of your picks. In the past 20 old ages the figure of unplanned gestations and sexually transmitted diseases has grown dramatically. Alaska has one of the highest adolescent gestation rates in the United States, and the figure continues to turn. Sexually familial diseases are running rampant throughout our society, and it is critical to maintain abreast of the latest intelligence. Condoms are the lone guaranteed manner, short of abstention, to forestall both gestation and infection. They are one of the most common and accessible preventives on the market today, and are safe and effectual when used decently. There are two chief sorts of rubbers. Male rubbers, the most popular of the two, and female rubbers. Male rubbers are made of latex, plastic, or natural membranes. They look like long, thin, chapfallen balloons. Male condoms halt organic structure fluids from blending during intercourse, and when used right are about 97 % effectual. Condoms are by and large safe, though some people may hold allergic reactions to latex. Spermicides, such as Nonoxynol-9, can besides do allergic reactions in some persons. Female rubbers are made of polyurethane, a thin plastic, and are safe for people who are allergic to latex. The rubber is used inside the adult female # 8217 ; s vagina and is 95 % effectual when used right. Many users of the female rubber have lauded it # 8217 ; s benefits, such as an added feeling of control, the easiness in buying the rubber ( female rubbers are available over the counter ) , and the low failure rate. Other consumers, nevertheless, have complained that the rubber is hard to infix, harder to happen because non as many shops carry female rubbers, and is more expensive than its male opposite number. Although both types of rubbers have many advantages, such as halting the spread of diseases and forestalling gestation, there are disadvantages. Condoms break easy and holes can organize about immediately when oil-based lubricators, such as Vaseline, suntan oil or whipped pick, are used. Some work forces find it hard to keep an hard-on with a rubber on or complain of a loss of esthesis while utilizing a rubber. Skin rubbers are an alternate to latex for forestalling gestation, but do non halt diseases from distributing. Polyurethane rubbers are a better pick than tegument rubbers, since they prevent infection every bit good as gestation. Both male and female rubbers come in colored, flavored and textured assortments. Oral preventives are besides widely used. Over seven adult females take them daily, and they are safe to utilize with other signifiers of birth control ( i.e. rubbers ) . There are two types of unwritten preventives: combined ( # 8221 ; the Pill # 8221 ; ) , and progestin-only ( # 8221 ; the Mini-Pill # 8221 ; ) . Pills are the most requested signifier of birth control, partially because of their deficiency of major side affects. Combined pills contain two endocrines, estrogen and progestogen, and prevent gestation by halting the organic structure from ovulating ( let go ofing an egg ) . The # 8220 ; Mini-Pill # 8221 ; contains merely progestogen. It works by inspissating the cervical mucous secretion so that the sperm can non make the egg. Combined pills are 99.9 % effectual, and the # 8220 ; Mini-Pills # 8221 ; are 99.5 % . Neither pill protects the user from sexually transmitted diseases or infections. Although pills are popular, there is some guess as to their long-run effects on the organic structure. Doctors who prescribe pills are required to inform the possible users of the hazards. 1 in 14,000 users between the ages of 30 and 39 will see bosom onslaughts, and stokes occur five times more often among pill users ( 1 in 2,700 ) . The hazards for tobacco users are higher. Blood coagulums and high blood force per unit area are besides possibilites. There are presently surveies underway that are researching the long-run effects of unwritten preventives. The CDC and the NICHD are co-sponsoring a long-run undertaking to analyse the pill # 8217 ; s relationship to malignant neoplastic disease of the generative piece of land and chest malignant neoplastic disease. Many people are besides concerned about cervical malignant neoplastic disease. Annually Pap vilifications and chest tests are strongly recommended to look into for the visual aspect of these diseases. Oral preventives can both assist and ache some adult females with depression. Pills with more estrogen are normally linked to pill-related depression, but the more popular pills that have lower doses of estrogen have non been proven to either alleviate or worsen depression. Depo-Provera injections are another normally used type of female birth control. Depo-Provera is a shooting incorporating a endocrine similar to progesterone. It stops the adult female from ovulating, and can supply other prophylactic and physical benefits. The shooting must be administered every three months or 13 hebdomads. The shooting may extinguish menses, and can better both PMS and depression. The Depo-Provera shooting is 99.7 % effectual in forestalling gestation. The stop and the cervical cap are somewhat less popular than the above stated methods of birth control, but they are both effectual. The stop is a gum elastic disc that is inserted into the vagina and covers the neck. It blocks the seeds from come ining the neck, and has a higher success rate when used in combination with spermatocide. When used right, it is 94 % effectual. Diaphragms are merely available by prescription. There are serious disadvantages and medical hazards associated with the stop. Use increases the hazard of urinary piece of land infections, and if the stop is inserted falsely it can steal out of topographic point during sex. If the stop is left in for more than 48 hours the hazard of developing Toxic Shock Syndrome is increased. The cervical cap is made of soft gum elastic. The user fills the cap with spermatocide, so places the cap on her neck. Suction keeps the cap in topographic point. The caps come in four sizes, and, like stop, are merely available by prescription. The cap can be put in an hr before sex, and will work for 48 hours. The cervical cap can assist forestall mussy sex during menses, and is approximately 91 % effectual. The cervical cap has disadvantages every bit good. The cap can increase the hazard of redness of the surface of the neck and can besides increase the hazard of developing Toxic Shock Syndrome. If the cap is improperly inserted, it can steal out of place during sex. The latex can do annoyance or an allergic reaction, and a new adjustment is necessary after holding a babe, a abortion, an abortion, or deriving 15 lbs. Doctors recommend replacing the cap every twelvemonth. Many spiritual groups promote abstention as a signifier of birth control. Abstinence is defined as avoiding sex. It is 100 % effectual in halting the spread of disease, and 100 % effectual in forestalling gestation. Abstinence can be a good option for some, but fortunes can alter all of a sudden, and being prepared is of import. When abstention is combined with another signifier of contraceptive method, such as rubbers or spermatocide, it is a realistically feasible program for birth control. Birth control is an of import personal determination. The type of birth control you choose and its effectivity can play a major portion in the remainder of your life. It is critical to do the proper determination, and educating oneself about the sorts of birth control available is indispensable to doing that pick. Bibliography Abstinence. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/abstinence.html. May 11, 2001. Cervical Cap. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/cervicalcap.html. May 11, 2001. Combined Oral Contraceptives. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/pills.html. May 11, 2001. Condoms. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/condom.html. May 11, 2001. Depo-Provera Injections. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/depo.html. May 11, 2001. Diaphragm. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/diaphragm.html. May 11, 2001. Medroxyprogesterone. hypertext transfer protocol: //health.yahoo.com/health/drugs_tree/medication_or_drug /0840/index2.html. May 11, 2001. Progestin-Only Pills. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/minipills.html. May 11, 2001. Reality Female Condom. hypertext transfer protocol: //www.emory.edu/whsc/med/famplan/reality.html. May 11, 2001.