Physics :: essays research papers fc

Physics 1. a) radiation~ The spontaneous decay or disintegration of an unstable atomic nucleus accompanied by the emission of radiation. b) nuclear energy~ Energy released when atomic nuclei undergo a nuclear reaction such as the spontaneous emission of radioactivity, nuclear fission, or nuclear fusion. c) background radiation~ relatively constant low-level radiation from environmental sources such as building materials, cosmic rays, and ingested radionucleides in the body. d) nuclear fission~ Atomic nuclear processes which involve the splitting of nuclei with the accompanying release of energy. e) nuclear fusion~ The nuclear process whereby several small nuclei are combined to make a larger one whose mass is slightly smaller than the sum of the small ones. 2. Two types of nuclear reactions can produce nuclear energy. Nuclear fusion is a process in which two light nuclei combine to form a single heavier nucleus. Nuclear fission is a process in which a heavy nucleus splits into two smaller nuclei. 3. Alpha, Beta, and Gamma radiation is produced when an unstable nucleus decays. Alpha particles are made of 2 protons and 2 neutrons. This means that they have a charge of +2, and a mass of 4 Alpha particles are relatively slow and heavy. They have a low penetrating power - you can stop them with just a sheet of paper. Because they have a large charge, alpha particles ionise other atoms strongly. Beta particles have a charge of minus 1, and a mass of about 1/2000th of a proton. This means that beta particles are the same as an electron. They are fast, and light. Beta particles have a medium penetrating power - they are stopped by a sheet of aluminium or plastics such as perspex. Beta particles ionise atoms that they pass, but not as strongly as Alpha particles do. Gamma rays are waves, not particles. This means that they have no mass and no charge. Gamma rays have a high penetrating power - it takes a thick sheet of metal such as lead, or concrete to reduce them significantly. Gamma rays do not directly ionise other atoms, although they may cause atoms to emit other particles which will then cause ionisation. 4. Advantages of using nuclear energy instead of energy produced by fossil fuels: ï  ¶Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The Earth has limited supplies of coal and oil. Nuclear power plants could still produce electricity after coal and oil become scarce. ï  ¶Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Nuclear power plants need less fuel than ones which burn fossil fuels. One ton of uranium produces more energy than is produced by several million tons of coal or several million barrels of oil.

Call If You Need Me Analysis

Call if you need me 1. Analyse the point of view. The point of view is based on the narrator written in a first person view talking the in the past. 2. Analyse the setting. The main characters in the story are Nancy and the narrator, Dan. The story takes place in Eureka in California. When the story takes place is unknown, but in the story it is common to have a car, so I am guessing that the story takes place somewhere in the present. 3. Give a character description of Dan and Nancy. Nancy is tall, long-legged brown woman with brown hair and eyes. She wants the relationship between Dan and her work, but somehow something keeps interfering.She is stuck in the past with the bad memories of Dan. There is no physical description of Dan, but he is also trying to make their relationship work. He is much more optimistic than Nancy. 4. Analyse the plot. The situation in this story begins with that their marriage is in trouble, so they are sending their son to work at a farm, while they try to work on their marriage. As they try to spend time together only focusing on themselves, they seem to be surrounded by good luck. But it leads to a disaster when Nancy starts crying while she is remembering the past.Dan tries to comfort her and telling that they will make it, but she is avoiding every opportunity. Then Dan sees some white horses in their yard and suddenly the Nancy’s mood started changing. She starts to see the light instead of being surrounded by darkness. As a result they got a fresh new start and he drives her to the airport, where she will go back home and she will be writing to Dan. In the when Dan comes back to the house and he immediately starts calling Susan, his ex-lover. 5. â€Å"I’ve missed you so much you’ve gotten lost somehow, I can’t explain it. I’ve lost you.You’re not mine any longer’’ Try to explain what Nancy means. Nancy has lost connection with Dan since their romance started to fade awa y. Perhaps she feels that she has lost to Susan. She envies Susan for taking Dan away from her. Now she is realizing it when she has a special moment with Dan. 6. A lot of things in the story are prophetic to the characters. Give examples. The story mentions the hummingbirds. Dan says that it is a good sign, he is not sure where he has heard it, but he is sure of it. Also a fisherman is wishing them good luck. 7. What does the white horses symbolize? Support your answer by quotes from the texts.I think that the white horses represent hope, faith and a fresh new start for their relationship. The color white purity, light, hope and a successful beginning. ‘’I don’t think they’ll bite,’’ ‘’They don’t look like the kind of horses that’ll bite†¦Ã¢â‚¬â„¢Ã¢â‚¬â„¢ It can be a symbol of hope for their marriage that there still is hope for them. 8. Why does Nancy feel elevated by the presence of horses? It can be because she is an animal lover or that she is living the moment, where nothing shall interfere her moment. She will not let Dan call the sheriff while she is living the moment patting the white horses. 9.In the ending we hear of a plane, hoof prints and a telephone. What do these things represent? The plane can represent the path Nancy is choosing and the hoof prints are traces of her, meanwhile the phone is the path Dan chooses. We do not know what happens after he called Susan. Perhaps he is going to call her and tell her that he is going to stay with Nancy or perhaps he will take the other path and go back to Susan. The telephone represents what path Dan is going to take. 10. The themes of the story might well be: Love and married life; infidelity; having to live up to ideals; being able to live in the moment.Choose the theme you find the most interesting, and show how the theme is expressed in the story. I think that the most interesting theme in this story is ‘’being able to live in the moment’’. You can clearly see that atmosphere is changing into romance in the story, when something good is happening, example: the white horses and when Nancy says ‘’I’m glad we’re here. ’’ I think that living in the moment is the most suitable theme in this story, because it makes them think a second time before getting a divorce, if they really want to stop seeing each other.

The First Gender Identity Clinic - 1862 Words

Transsexual Phenomenon, and within months Johns Hopkins University opened the first gender identity clinic in the United States to diagnose and treat transsexual individuals and to conduct research related to sexuality. Within ten years, more than forty university affiliated gender clinics existed throughout the United States including programs at the University of Minnesota, Stanford University and Case Western University (Stryker, 2008). With the establishment of these gender identity clinics, and the financial backing of philanthropist Reed Erickson, a transsexual man, the health care needs of transsexual people gained increased attention and support. Despite this new attention, the clinics used Benjamin’s model of â€Å"true† transsexuals. This differentiation between â€Å"true† transsexuals and other gender variants became a serious and highly important diagnostic decision as gender affirming surgeries were irreversible. This resulted in many transsexual individuals to be denied access to hormones and surgery. Specifically, transsexual men encountered difficulties, as transsexuality was primarily seen as a male-to-female only transition. In fact, during the late 1960s the United States leading UCLA Gender Identity Research Clinic debated whether trans men should be considered transsexuals. Many trans men themselves did not label themselves as transsexuals as they only knew about other transs exual women (Meyerowitz, 2002; Beemyn, 2014). Classification in the DiagnosticShow MoreRelatedWomen Have A History Of Fighting For Their Rights Essay1461 Words   |  6 Pages If we go back in history, when Margaret Sanger did the â€Å"unspeakable† in 1916 and opened the first U.S. birth-control clinic in Brooklyn, New York and that moment became chaos. Despite her courage, she was arrested ten days later and her clinic was shut down. 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