Brainteaser Physics Challenging Physics Puzzlers

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1、?≥√>Ω+πcm?≈≤<=BrainteaserPhysicsAB=1Ω=?Thispageintentionallyleftblank≥?√ΩπΩ=Challengingcm√PhysicsPuzzlersGöranGrimvallTheJohnsHopkinsUniversityPressBaltimore©2007TheJohnsHopkinsUniversityPressAllrightsreserved.Published2

2、007PrintedintheUnitedStatesofAmericaonacid-freepaper987654321TheJohnsHopkinsUniversityPress2715NorthCharlesStreetBaltimore,Maryland21218-4363www.press.jhu.eduLibraryofCongressCataloging-in-PublicationDataGrimvall,Göran.Brainteaserphysics:challengingph

3、ysicspuzzlers/GöranGrimvall.p.cm.Includesbibliographicalreferencesandindex.ISBN-13:978-0-8018-8511-2(acid-freepaper)ISBN-10:0-8018-8511-6(acid-freepaper)ISBN-13:978-0-8018-8512-9(pbk.:acid-freepaper)ISBN-10:0-8018-8512-4(pbk.:acid-freepaper)1.Physics—

4、Miscellanea.I.Title.QC75.G752007530—dc222006025675AcatalogrecordforthisbookisavailablefromtheBritishLibrary.?≥√>Ω+πcm?≈≤<=ContentsAB=1Ω=?Prefacevii1TenHits1DinghyinPool/IceinWater/AccidentinAqueduct/FloatingCandle/RunningintheRain/ReachingOut/Resistor

5、Cube/One,Two,Three,Infinity/LostEnergy/SimpleTimetable/problemssolutions2NoMathRequired31MovingBackward?/HeatingWater/BrightLamps?/LowPressure/SiteforHarbor/MoreGas?/HighTension/OceanSurface/Mariotte’sBottle/problemssolutions3AreYouSure?55BicycleonaRo

6、pe/BoatsinaLock/HummingTransformer/WhatIstheCharge?/TwoWoodenBlocks/ShotinaPot/FillingaBarrel/TubewithSand/SaunaEnergy/Slapstick/problemssolutions4ForcesandCurrents79SeparatedBoxes/DroppedBooks/TheEggofColumbus/HeliumorHydrogenintheBalloon?/LightbulbF

7、oundinaDrugstore?/BrightorDark?/YinandYang/RiseandFallofaBall/ElevatorAccident/problemssolutions5NotExactbutStillRelevant108WhatIsYourVolume?/OntheMove/ShotPutandPoleVault/RecordStadium/GrainsofSand/CoolingCoffee/TimeforContact/Socrates’Blood/problems

8、solutions6ChallengesforYourCreativity127IronBars/FaultyBalance/GreekGeometry/TheSugarBox/TheCatenary/FalseImpressions/TestingtheHammer/WhichWay?/ThreeSwitches/PulseBeats/FakeEnergyStatistics/problemssolutionsCoda146FurtherReading149Index157vic