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HOMEWORK EXAM 3: Chapter 19: The half life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175 years later? Answer 0.166 0.125 0.062 here 0.015 Which relation is not correct? Answer 11p = 11H = proton 0-1e = 0-1β = electron here +10e = +10β= positron 10n = neutron As a result of beta decay‚ the product nucleus is Answer one atomic number lower than the original element. two atomic number
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Chemistry 110 Midterm 1 October 11‚ 2005 1. What are the possible values for the orbital angular momentum quantum number l given the following values for the other three quantum numbers: n = 4‚ l = ?‚ ml = 0‚ ms = +1/2 A. B. C. D. E. 0 1‚ 2‚ 3‚ or 4 3 0‚ 1‚ 2‚ or 3 none of these answers 2. If the wavelength of an electron is equal to the radius of the n=2 orbit in He+‚ what must the velocity of the electron be? A. B. C. D. E. 6.88 x 106 m/s 1.38 x 107 m/s 3.44 x 106 m/s 5.47 x 105 m/s The velocity
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Direksyon 1. Sino ang director? 2. Maayos ba ang pagkakabuo ng pelikula? SAGOT: 1. Olivia Lamasan. Si Olivia Lamasan ay isang director at prodyuser. Natapos siya sa kursong Bachelor of Arts in Communication Arts sa Maryknoll College. Hanggang ngayon ay isa parin siya sa mga award winning director at prodyuser. Writer: * Milan (2004) * Got 2 Believe (2002) -- screenplay * Minsan‚ Minahal Kita (2000) -- screenplay‚ story * Madrasta (a.k.a. The Stepmother) (1996)
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2012 Table of Contents Page # 1.0 Design 1.1 Focus Question 2 1.2 Hypothesis 2 1.3 Background Theory 2 1.4 Variables in the Investigation 4 1.5 Controlled Variables 5 1.6 Apparatus & Chemicals 5 1.7 Risk Assessment 6 1.8 Experimental Method 8 1.9 Lab Setup 9 1.0 Design 1.1 Focus Question What is the relationship between increasing atomic number of
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Dinistiyang Sui (581-618 A.D.) * Itinatag ni Yang Chien na sinundan ni Yang Ti. * Ipiniagpatuloy ang paggawa ng Great Wall of China. * Naggawa rin ang Grand Canal (Nagdurugtong sa Ilog Huang Ho at Ilog Yangtze) * K’aihuang Code” na nagingmodelo ng Kodigo ng Tang (ang pinakamaimpluwensyang kalipunan na mga batas sa ilang bansa sa silangan) * Sa panahong ito nasadlak ang Tsina sa kaguluhan at paglusob ng mga Han mula sa Hilagang Asya. * Ipinagpatuloy ni Yang Ti‚anak ni Wen Ti
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I EUROPËS TEK IDEJA E EUROPËS Autorët si Lingvard etj. kanë theksuar se miti në thelb është gjendje shpirtërore‚ gjendje e caktuar e njerëzve arkaik. Organizimi imagjinar u bënte të mundur njerëzve për t’u bashkuar duke krijuar një tip relativisht të qëndrueshëm të kulturës. Shumë kohë më pas transmetohet nga gjenerata në gjeneratë‚ pastaj vjen tek shkrimi i tyre. Çdo kohë ka mitet e veta. Pse shërben miti? Njerëzit e justifikojnë prezencën e miteve duke na paraqitur imazhe‚ ku ata kanë projektuar
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Mi último adiós From Wikipedia‚ the free encyclopedia This article has been nominated to be checked for its neutrality. Discussion of this nomination can be found on the talk page. (June 2008) The autographed first stanza of "Mi último adiós" "Mi último adiós" (Spanish for "My Last Farewell") is a poem written by Philippine national hero Dr José Rizal on the eve of his execution on 30 December 1896. This poem was one of the last notes he wrote before his death; another that he had written
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Name : Ricahuerta ‚ Kimberlee kate Tides - are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth. Most places in the ocean usually experience two high tides and two low tides each day (semidiurnal tide)‚ but some locations experience only one high and one low tide each day (diurnal tide) Two types of tides Spring Tides By definition‚ spring tides are the horizontal flow of water toward
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n(x) p(x) ( ) Δx 2 Dn = 2τ The kinetic energy of electron is given by: K .E . = * mn vavg g 2 2 = kT Dn Dp 2/s) (cm2/s) (cm Ge Si GaAs 100 35 220 50 12.5 10 Einstein relation μn (cm2/Vs) 3900 1350 8500 (cm2/Vs) 1900 480 400 Dn kT = = Vth q μn Dp kT = μp q x μp Examples 1. 1 An intrinsic Si is doped with donor atoms with a density of (a) In equilibrium J(x) = 0 what is electric field E(x)? (b) Sketch a band diagram. N D (x)
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