Concepts of Electrostasis

Why do you suppose this is so? -Outer electrons are loosely bound with the nucleus because of their larger distance from the nucleus, so they can be easily stripped off. In the case of the inner electrons, the opposite is true. They are more tightly bound because their closer to the nucleus, so they are more difficult to remove them. 52) You are not harmed by contact with a charged metal ball, even though its voltage may be very high. Is the reason similar to why you are not harmed by the rater than 1 ICC sparks from a Fourth of July sparkler? Defend your answer in terms of the energies that are involved. Yes. The reason is similar, because the amount of energies involved in both cases is very small. Chapter 23: Electric Current 46) In the circuit shown, how do the brightness's Of the identical lightships compare? Which bulb draws the most current? What will happen if Bulb A is unscrewed? If Bulb C is unscrewed? -The brightness of Bulb A and Bulb B will be the same, while Bulb C will be twice as Bulbs A or B. Bulb C draws the most current. When Bulb A is unscrewed, Bulb C will glow as it had and Bulb B will not glow. If Bulb C is unscrewed, Bulb A and Bulb B will glow at the same brightness.Chapter 24: Magnetism 15) One way to make a compass is to stick a magnetized needle into a piece of cork and float it in a glass bowl full of water. The needle will align itself with the horizontal component of Earth's magnetic field. Since the north pole of this compass is attracted northward, will the needle float toward the north side of the bowl? Defend your answer. -The needle will point toward the northward direction; however, it will not eve towards the northward side since the forces acting on the needle balances each other Out, remaining at rest. 3) In a mass spectrometer, ions are directed into a magnetic field, where they curve and strike a detector. If a variety of singly unionized atoms travel at the same speed through the magnetic field, would you expect them a ll to be deflected by the same amount, or would different ions be bent different amounts? Defend your answers. -Deflection of ions by magnetic fields solely depends upon their charge/ mass ratio. This is different for different ions. Chapter 25: Electromagnetic Induction 2) A certain simple earthquake detector consists of a little box firmly anchored to Earth.Suspended inside the box is a massive magnet that is surrounded by stationary coils of wire fastened to the bode. Explain how this device works, applying two important principles of physics-?one studied in Chapter 2 and the other in this chapter. -When an earthquake occurs, stationary coils inside the detector begin to vibrate and a relative motion between the coils and magnets is generated. The motion of the coils induces voltage into the coils. As a result, the intensity of the earthquake is recorded. ) A length of wire is bent into a closed loop and a magnet is plunged into it, inducing a voltage and, consequently, a current in the wire. A second length of wire, twice as long, is bent into two loops of wire, and a magnet is similarly plunged into it. Twice the voltage is induced, but the current is the same as that produced in the single loop. Why? -The voltage induced is directly proportional to the number Of loops Of the wire. Resistance is directly proportional to the length of the wire as long as all other parameters are constant in the formula R=PL/A.The second wire has wise the length and twice the number of turns than the first wire. 43) The metal wing of an airplane acts like a â€Å"wire† flying through Earth's magnetic field. A voltage is induced between the wing tips, and a current flows along the wing but only for a short time. Why does the current stop even though the airplane contain use flying through Earth's magnetic field? -The current stops even though the airplane continues to fly through the Earth's magnetic field, because the losses which occurred when a motor operates a gen erator and when the voltage is stepped up by a transformer is not considered.After the completion of each cycle, the energy outputted decreases due to the losses in the motor, the generator, and the transformer. Therefore, this will stop. Chapter 32: The Atom and the Quantum 6) Why does classical physics predict that atoms should collapse? -According to classical physics, an accelerated charged particle emits radiation. An electron that is orbiting the nucleus should radiate energy and move into a spiral path that ends at the nucleus. Therefore, atoms should collapse from a classical physics description. 28) When and where do Newton's laws of motion and quantum mechanics overlap?When the size of the system is very large compared to the De Brogue wavelength, the Newton's laws of motion and quantum mechanics overlap. Chapter 33: The Atomic Nucleus and Radioactivity 16) Two protons in an atomic nucleus repel each other, but they are also attracted to each other. Explain. -Two protons i n an atomic nucleus repel each other and also attract each Other, because of Coulomb Repulsion. The protons repel each other; however, due to a strong nuclear force, they also attract each other. 47) Why is carbon dating ineffective in finding the ages of dinosaur bones?

A Famous Festival in Myanmar Essay

Thingyan festival – Water Festival – Myanmar New Year – in April The country Myanmar is Known as the â€Å"Golden Land† in the world since every pagoda is decorated and painted with gold. Myanmar is full of very colourful and deep rooted festivals. There are 13 most popular year around festivals in Myanmar. One of them is the celebration on Thingyan Festival, as the Water Festival or Myanmar’s Traditional New Year Festival. Myanmar people celebrate the Water Festival all over the country for 4 days before New Year day by throwing water on each other. It takes place on April13th to April 16th of every year. It is believed that Water Festival washes away sins and welcomes the New Year, April 17th. The Mandats, water throwing and playing places with the large signboards are every where, not only in the cities but also in the villages. In major cities such as Yangon, garden hoses, huge syringes made of bamboo, plastic water pistols, bowls, cups and other devices from which water can be squirted are used. All these whole days, people are going round to the Mandats with their bicycles, motorbikes, opentop jeeps and trucks to play the water with each other. It is a hottest time of the year and a good dousing is welcomed by most. Everyone is fair game except the monks and obviously pregnant women. After playing around and having fun throughout the country, people welcome the New Year on the 17th by cleaning the floors of the pagodas and monasteries, washing old and aged peoples’ hair, helping to cut their nails. Some offer free foods and drinks for everyone who comes to the pagodas. Some make other donations. There is also a custom in Myanmar to buy live fishes and cows during the festival and let them free in sanctuaries or rivers or lakes with a prayer and a wish saying â€Å"I release you once, you release me ten times† on the final day of Thingyan. Most of the Myanmar’s believe in Buddhism and so killing any living creature is a sinful act. All these April days, there are music and sprinkling of water in the air. Throwing water on everyone with the intention to purify their mind and  spirit is really wet. If you are planning a trip to the Gold Land Myanmar, this is one festival not to be missed. All your sins are purified with Thingyan Water Festival. You will never forget true joy.

How Does Hosseini Tell the Story in Chapter 2 Essay

During this early stage of the novel, narrative is fundamental in forming the basis and definition of Amir, the protagonist and teller of the story. As well as this, several expectations for the novel are also established, particularly in terms of characterization and plot. Whilst the book as a whole can be described as a psychological exploration into the complexities of guilt and jealousy, this chapter differs in the sense that the narration deliberately refrains from discussing any thoughts or emotions of Amir. Founded on factual knowledge such as dates, times, births, deaths, and directly quoted dialogue, the formal tone may reflect the writer’s attitude to the material being discussed; perhaps he is ashamed and wants, during this chapter, to distance himself from emotional implications and accountability? Instead, we are introduced to the voices of other characters, such as Baba, Ali and Sanaubar. This begins to embed the idea that the plot will revolve around a delicate web of interpersonal relationships. Furthermore, Hosseini’s first-person narrator makes the larger story of Afghanistan’s troubles seem very personal, as Amir’s tale of personal abuse, betrayal, and redemption, mirrors the tale of Afghanistan itself. Hosseini uses contrast to illustrate the inverse lives of Amir and Hassan. Endless description of infinite luxury, marble surfaces, the warmth of fire, and curved walls steering through one room after another, is followed by a single sentence, almost as an afterthought, mentioning Hassan and Ali’s humble mud hut at the bottom of the garden. The choice of sentence structure is reflective of their positions in society; their respective lifestyles are the culmination of ethnic tensions and intolerances. However, a degree of similarity remains, a similarity that is irrelevant of society. Both Hassan and Amir have lost their mothers, and as a consequence, only have their fathers and each other. They are closer than regular friends, or more like brothers. Their relationship plays a central role in the book, and it figures in another theme that is introduced in this chapter: standing up for what is right. But despite this undeniable connection, Amir cannot call Hassan a friend, in the same way that Baba never refers to Ali as a friend either. The looming division of religious beliefs is further intensified by the blasphemous language used by the soldiers in reference to Hassan’s mother, which gives an impression of the control and sadistic ways associated with the treatment of Hazaras by the Pashtuns. The significance of setting becomes increasingly apparent as the book goes on, and in this chapter we are introduced to the pastoral environment that sets the scene for the childhood that Amir and Hassan shared. Hosseini crafts a typical landscape in descriptive detail of the Afghanistan that once was, of sunlight, trees, fruit, and autumn colours. This imagery is recurrent in passages of retrospective throughout the novel, and is part of a structural plan to effectively shock the reader in later chapters when Amir returns to Afghanistan.

Identify and illustrate some of the dominant cultural values of modern Essay

Identify and illustrate some of the dominant cultural values of modern consumer societies - Essay Example Moreover, it is still a debatable issue whether modern consumerism has espoused globalised or localised philosophies (Merz et al. 2008: 166-182). Yet, literature on this topic has focused on finding the disparities between theoretical knowledge and its practical implementations. The main difficulty in arriving any conclusive model of consumer culture in modern societies is that social values and systems are too generic to hint at any distinctive features of consumerism. On one hand, the 21st century is market-centric. The pervasive market trends have engulfed everything material or immaterial. Theories of branding, especially those involving adolescent psychologies, clearly show how cultural propensities are directly regulated by the market economy (Naim et al. 2008: 627-640). On the other hand, this market driven economy fails to justify behaviours such as religious preferences or jingoism (Slater 1997: 24). This essay strives to discuss the key factors that can be held as probable identifiers of the dominant cultural values that underpin modern consumer societies. Culture is an abstract term for a number of social, economic and behaviorist aspects. The process of locating cultural attributes in any given society is extremely complex, for the notion of culture is highly de-territorialised due to regular intermingling of a diverse array of cultures across domestic as well as international borders. Hence, there is a pluralistic dimension to the study of ethnology in the context of consumerism (Craig and Douglas 2006: 322-342). The counter-culture movements in the 1960s may be examined in order to explore the subtleties of social hegemony and its impact on human culture. Market oriented economic practices in the modern era have not diffused into the realm of mass consumerism. Such practices are cultural properties of the elites who rule the economy of any given society. The mass, on the contrary, are compelled to using what is