The Balmer series is characterized by the electron transitioning from n ¡Ý 3 to n = 2‚ where n refers to the radial quantum number or principal quantum number of the electron. The transitions are named sequentially by Greek letter: n = 3 to n = 2 is called H-¦Á‚ 4 to 2 is H-¦Â‚ 5 to 2 is H-¦Ã‚ and 6 to 2 is H-¦Ä. As the spectral lines associated with this series are located in the visible part of the electromagnetic spectrum‚ these lines are historically referred to as H-alpha‚ H-beta‚ H-gamma and
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Solution: Apply integral test: Z Z ln R 1 X R 2 1 p dx x (ln x) p=1 p 6= 1 let ln (x) = u then ln 2 so that when p = 1 and p < 1 integral diverges by letting R ! 1‚ so does the series. When p > 1 then integral converges to ! 1 p 1 p 1 p (ln R) (ln 2) (ln 2) lim = ‚ R!1 1 p 1 p 1 p so does the series. 2. (18 pts.) Find the in…nite sum 1 : n (n + 2) n=1 Solution: See that 1 1 = n (n + 2) n 1 n+2 1 X 8 R < ln ujln 2 ln 1 ln R du = 1 p : u p up 1 ln 2 hence 1 n (n + 2) n=1 k X
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ACTIVITY SERIES The activity series of metals is an list of metals ranked in order of decreasing reactivity to displace hydrogen gas from water and acid solutions. It can also be used to predict which metals will displace other metals in aqueous solutions. In introductory chemistry‚ the reactivity series or activity series is an empirical series of metals‚ in order of "reactivity" from highest to lowest. It is used to summarize information about the reactions of metals with acids and water‚ single
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Kiwi Series #1 My choice of artwork for this essay is titled Kiwi Series # 1. This painting is made by Dennis Wojtkiewicz in 2005. The size of this painting is 36 by 66 inches. The medium used in this painting is the oil on canvas. I chose this painting because it appeals to my sense of aesthetics and also it has the most interesting use of texture. This painting is an excellent example of our sight being able to activate other senses. The presentation of the translucent fruit and fuzzy skin is
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detail‚ so he will be taken off site where he will learn more about the different types of food‚ such as what to do if it is too spicy‚ and other details that he won’t have time to be taught at the restaurant. It is also likely that one day the chef will have to be retrained and his skills upgraded. This is because over time technology changes‚ and the restaurant might start using a new type of cooker‚ or they might invent some new recipes‚ which he will have to learn how to make. Also if the chef
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Taking part-time jobs has become the phenomenon among university students‚ and some students in Soochow University follow this trend as well. Indeed‚ there are some advantages; however‚ there are also some disadvantages. One of the advantages is that students can earn money. Some students have to earn money on their own to pay the tuition while some students just earn money to pay for their expenditure or satisfy their desire. In this material-oriented society‚ money is important and indispensable
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The advantages and disadvantages of having a part time job. The advantages and disadvantages of having a part-time job. Many students work while attending university for many different reasons. It can be difficult to balance work and school‚ but it can certainly be done .Actually‚ there are many advantages such as earning money‚ gaining new experiences‚ and developing your organizing and time management skills. However‚ you should take into account some disadvantages. For instance‚ the
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Part-Time Jobs 1 at an arcade‚ at the movies‚ at a golf course‚ at a flower shop‚ at a clothing store‚ at a music store‚ at the post office‚ at a mall‚ at a convenience store‚ at an information desk‚ at a video store‚ at a company‚ at a hotel‚ at a gas station‚ at a fast-food restaurant‚ at a laundromat‚ at a car wash‚ at a camp Mark’s note: I use this first set to practice ’where?’ - -> ’at ...’ and to practice the third person singular: - ’She works at an arcade.’ - ’Where does s/he
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[pic] Fourier Series: Basic Results [pic] Recall that the mathematical expression [pic] is called a Fourier series. Since this expression deals with convergence‚ we start by defining a similar expression when the sum is finite. Definition. A Fourier polynomial is an expression of the form [pic] which may rewritten as [pic] The constants a0‚ ai and bi‚ [pic]‚ are called the coefficients of Fn(x). The Fourier polynomials are [pic]-periodic functions. Using the trigonometric
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|Sales Forecast in a Foundry Fab- A linear time series approach | |D9516914/羅振宇 | 1. Introduction Sales forecasting plays a crucial corporate role because it provides the basis for company-strategic decisions‚ including capacity preparation‚ inventory level‚ and capital expenditure
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