physics.003 - xx 43.3 43.4 43.5 43.6 43.7 43.8 A-PDF Split...

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xx Detailed Contents 43.3 Nuc earStability and Radioactivity 1478 44.7 The Beginning of Time 1538 43.4 Activities aDd Half. ives 1485 SummarylKey Terms 1547 43.5 BiologicalEffects ofRadiation 1489 QuestionslExelCiseslProblems 1548 43.6 Nuc. ear React" DS 1492 43.7 NuclearFmion 1494 43.8 Nuclear Fusion 1498 SummarylKey Terms 1502 APPENDICES QuesrionslExe,rciseslProblems 1S03 A The Internal: nal SystemofUnits A-I B Useful Mathematical Relations A-3 44 PARTICLE PHYSICS AND 'C The Greek Alphabet A4 COSMOLOGY 1509 D Periodic TableofElements A-5 44.1 Fundamental Partitcles--AHistory .1509 E Unit Conversion Factors A-6 44.2 ParticleAccelerators and Detectors 1514 F Numerical Coostants A-7 44.3 Particles and Interactions 1519 Answers to Odd- umbered frob· ems A-9 44.4 Quarksand the Eightfold Way 152S Photo Credits C-l 44.5 The StandardModel Beyond 1530 Index -1 44.6 The Expanding Universe 1532 A-PDF Split DEMO : Purchase from to remove the watermark
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UNITS, PHYSICAL QUANTITIES, AND VECTORS ? Be- g bSe to pre- didthe path of a hum- cane is essentia for minimi • ,g the damage it does to lives d property. If a hurricane is moving at 20 km/h in adireCofl 53" .orth of east, how fa. nodh doesthe Jicane m<JIIe j- one 117 LEARN NG GOALS BysI1I4yill'tills dlJllfel; )'CNl wiDIHnr. • Whatthe fundamental quantities of mechanics are, and the units physicists use to measure 1hem. ,How to keep track of signilicanr flgures your calculations. • lhe difference between scalars and vectors, and how to add and su d: veetOfS gmphica y. • What the components a vector are, and how use them in calculations. • What unit vectoJS ate, and how use them with oomponents to describe vectOTS. • Two ways of muhiplying vectors. he study physics is important because physics OJleof the most funda. .. meatal of the scie ces. Scientists of all disciplines make use ofthe ideas ofpllysics. includingchemists whostudy the Btmcture ofmolecu es.pale- ontologists who tty to reconstnlcthow dinosaurs waIl~ and climatologists who study how human activities affect the atmosphet'e and oceans. Physics is also the fo dation of all engineering and technology. 0 engineer could design a fiat- screen Tv, an interplanetary spacecraft, or even a better mouseu-ap without first UlldersmndiRg the basiclaws of pbysics_ The study of physics also an adventure. ¥oo wID find it challenging. 80me- times frustrating, occasionally painful, and often richly rewarding satisfy- ing. It wID appeal [0 your senseof beauty as wen as [0 yourratio.a] intelligence. lfyou'veverwonderedwhy tb skyislue, howradio waves cantra 1through empty space, or how 81 sarelJ.De. stays in orbit, yo can find e answe18 by .sing fundamental physics. Above aU, you will come to ee physics as a towering achievement of th human intellect in irs quest [0 un erstand our world ourselves. In this opening chapter, we'll goover some·importantprelimioarles thatwe'll needthroug out our 5tudy. We'll discuss the nature ofphysical theory and ' eu e ofidealizedmodels [0 represent pbysical systems. We"U introduce systems of units used describe physical quantities diSCU88 ways to describe the accu- racy of a number. We1J
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This note was uploaded on 02/16/2011 for the course PHYS 231 taught by Professor Bingham during the Spring '08 term at University of Tennessee.

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physics.003 - xx 43.3 43.4 43.5 43.6 43.7 43.8 A-PDF Split...

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