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高中物理必背知识点实用口诀TXT手机版(PRACTICALTIPSFORHIGHSCHOOLPHYSICSTXT)1DESCRIPTIONOFMOVEMENT1OBJECTMODELWITHPARTICLESIZE,IGNORESHAPEANDSIZETHEEARTHTURNSTOBEAPARTICLE,THEEARTHSROTATIONISABOUTTHESIZETHECHANGEOFTHEOBJECTPOSITION,ACCURATEDESCRIPTIONWITHDISPLACEMENT,SPEEDSMOVEMENTTHANT,WITHVANDTTHANA2USINGGENERALFORMULA,AVERAGEVELOCITYISSIMPLEMETHOD,INTERMEDIATETIMEVELOCITYMETHOD,INITIALVELOCITYZERORATIOMETHOD,ANDGEOMETRICIMAGEMETHOD,TOSOLVETHEMETHODOFMOTIONTHEFREEFALLISANINSTANCE,THEINITIALVELOCITYISZEROA,ETCTHESPEEDOFTHECENTERMOMENTISEQUALTOTHEAVERAGEVELOCITYACCELERATIONHASAGOODSIDE,SATSQUARE,ETC3THEVELOCITYDETERMINESTHEMOTIONOFTHEOBJECT,INTHEDIRECTIONOFTHEACCELERATIONOFTHEVELOCITY,THESAMEDIRECTIONISACCELERATEDBACKWARD,ANDTHEVERTICALTURNINGISTHESAMESECOND,THEFORCE1FORCEANALYSISISTHEKEYTOSOLVEMECHANICALPROBLEMSANALYZETHEFORCEOFFORCEANDDEALWITHITACCORDINGTOTHEEFFECT2THEANALYSISFORCESHOULDBECAREFUL,QUANTITATIVECALCULATIONOFSEVENFORCESTHEFORCEOFGRAVITYISDETERMINEDBYTHEFORCEOFGRAVITYTHEREISELASTICITYANDFRICTION,RELATIVEMOTIONISTHEBASISTHEFORCEOFGRAVITYISDEFINITEINALLTHINGSLORENZFORCE,THEESSENCEISUNITYVERTICALFORCEISTHELARGEST,PARALLELINABILITYTOREMEMBER3THECALCULATIONRESULTISONLY“QUANTITY“INTHESAMEDIRECTIONTHETWOFORCESARESMALLANDLARGE,TWOFORCESAREQANGLECLIP,PARALLELOGRAMMETHODTHERESULTANTFORCESIZEVARIESWITHQ,ONLYINTHEMAXIMUMMINIMUM,ANDTHEFORCEOFTHEFORCEISCOMBINEDTOTHEOTHERSIDETHEMULTIFORCEPROBLEMSTATE,ORTHOGONALDECOMPOSITIONTOSOLVE,TRIGONOMETRICFUNCTIONSCANBERESOLVED4MULTIPLEMETHODSOFMECHANICALPROBLEMS,INTEGRALISOLATIONANDHYPOTHESISALLYOUNEEDTODOISLOOKATTHEEXTERNALFORCEANDSOLVETHEINTERNALFORCEISOLATIONTHESTATEISTHESAMEASTHEWHOLE,OTHERWISEITISMUCHMOREISOLATEDEVENIFTHESTATEISDIFFERENT,THEWHOLECOWIICANBEDONESUPPOSETHATSOMEFORCEISORISNOT,ANDISDETERMINEDACCORDINGTOTHECALCULATIONTHELIMITMETHODGRABSTHECRITICALSTATE,THEPROCEDURALLAWISDONEINORDERORTHOGONALDECOMPOSITIONCOORDINATES,THEAXIALVECTORISASMUCHASPOSSIBLENEWTONSLAWSOFMOTION1FANDOTHERMA,NEWTONTWOLAW,PRODUCEACCELERATION,BECAUSEOFFORCESOTHENETFORCEISGOINGINTHESAMEDIRECTIONASA,SOTHEVELOCITYVARIABLEISGOINGTOBEEQUALTOA,SOITSGOINGTOBEASMALLER,BUTITSGOINGTOBEGREATERTHANU,SOITSGOINGTOBEEQUALTOU2THEFORCEOFNANDTDEPENDSONTHEWEIGHT,ANDTHEMGPRODUCTISTHEREALWEIGHTHEAVYWEIGHTLOSSISREGARDEDASHEAVY,ANDTHEINVARIANTISREALWEIGHTACCELERATIONISOVERWEIGHT,DECELERATIONISALSOOVERWEIGHTWEIGHTLESSNESSISDETERMINEDBYADDINGANDDECREASING,COMPLETELYLOSINGATTENTIONTOZEROFOUR,CURVEMOTION,GRAVITATION1THEMOTIONTRAJECTORYISTHECURVE,THECENTRIPETALFORCEEXISTSASTHECONDITION,THECURVEISCHANGING,THEDIRECTIONISTHETANGENTLINE2THECIRCULARMOTIONCENTRIPETALFORCE,THESUPPLYANDDEMANDRELATIONINTHEHEART,THERADIALFORCEPROVIDESTHEFOOT,NEEDSMUSQUAREDOVERR,MRWSQUAREALSONEEDS,THESUPPLYANDDEMANDBALANCEISNOTDISORIENTEDGRAVITATIONISBORNOFMASSANDEXISTSINALLOFTHEWORLDSATELLITESORBITTHECELESTIALBODY,ANDTHEFASTANDSLOWMOTIONOFTHESATELLITEISDETERMINEDBYDISTANCE,THECLOSERITIS,THEFASTERITGOES,THEFARTHERITGOES,THESLOWERITGOES,THESPEEDOFTHESYNCHRONOUSSATELLITEISFIXED,ANDTHESATELLITEISTRAVELINGOVERTHEEQUATORMECHANICALENERGYANDENERGY1DETERMINETHESTATEFORKINETICENERGY,THEANALYSISPROCESSLOOKSFORTHEFORCEWORK,PLUSTHEPOSITIVEANDNEGATIVEWORKTOGETHER,THEKINETICENERGYINCREMENTISTHESAMEASTHATITSCLEARTHATTHETWOSTATEMECHANICALENERGY,THEPROCESSFORCEISDOINGWORK,THE“GRAVITY“ISZERO,THEINITIALSTATEENERGYISTHESAME3DETERMINETHESTATETOFINDTHEAMOUNTOFENERGY,ANDTHENLOOKATTHEPROCESSFORCETODOWORKSOTHERESACHANGEINENERGY,ANDTHEINITIALSTATEENERGYISTHESAME6ELECTRICFIELD1COULOMBSLAWCHARGEFORCE,GRAVITATIONALATTRACTIONFORCE,ASIFITISTHETWINBROTHER,KQQANDRSQUAREDRATIO2THEREISANELECTRICFIELDAROUNDTHECHARGE,ANDFISSTRONGERTHANQKQISMORETHANR2,ANDUISEQUALTOTHEELECTRICFIELDTHEINTENSITYOFTHEELECTRICFIELDISTHEVECTOR,THEFORCEOFTHEPOSITIVECHARGEISFIXEDDESCRIPTIONOFTHEUSEOFELECTRICFIELD,THEDENSITYOFWEAKANDSTRONGTHEFIELDENERGYISELECTRICPOTENTIALANDTHEFIELDLINEISDECREASINGTHEWORKOFFIELDFORCEISQU,THEKINETICENERGYTHEOREMCANNOTBEFORGOTTEN4THEELECTRICFIELDHASEQUIPOTENTIALSURFACE,WHICHISPERPENDICULARTOTHEFIELDLINETHEDIRECTIONISLOWWITHHIGHDIRECTION,ANDTHESURFACEDENSITYISCHARACTERISTIC7,CONSTANTCURRENTISOPTIONAL31WHENTHECHARGEISMOVING,THECURRENTISEQUALTOQOVERTTHEFREECHARGEISTHEINTERNALCAUSE,ANDTHEVOLTAGEONBOTHENDSISTHECONDITIONTHEPOSITIVELOADFLOWDIRECTIONISDETERMINED,ANDTHEFLOWMETERISMEASUREDTHEEXTERNALCURRENTOFTHEPOWERSUPPLYISNEGATIVE,FROMNEGATIVETOSERIOUS2THREEFACTORSOFRESISTANCELAW,THETEMPERATUREISCONSTANT,THECONTROLVARIABLEISDISCUSSED,RLRATIOSANDOTHERRESISTANCETHECURRENTISDOINGTHEWORKUIT,THEELECTROTHERMALISQUAREDRTELECTRICPOWER,WRATIOT,VOLTAGETIMESCURRENTISALSO3BASICELECTRICPATHLINKINGANDSEPARATINGPRESSURESHUNTCOMPLEXCIRCUITSUSETHEBRAIN,THEEQUIVALENTCIRCUITISTHEKEY4PARTIALCIRCUITOFCLOSEDCIRCUIT,EXTERNALCIRCUITANDINTERNALCIRCUIT,FOLLOWEDBYOHMPRESSUREDROPINTHETERMINALVOLTAGE,ANDTHEELECTROMOTIVEFORCE,EXCEPTTHETOTALRESISTANCECURRENTIS8,31THEREISAMAGNETICFIELDAROUNDTHEMAGNET,ANDTHEFORCEOFTHENISDETERMINEDTHEREISAMAGNETICFIELDAROUNDTHECURRENT,ANDAMPERESETTHEDIRECTION2FRATIOILISTHEFIELDINTENSITY,PHIANDOTHERBSMAGNETICFLUX,MAGNETICFLUXDENSITYPHIRATIOS,THENAMEOFMAGNETICFIELDSTRENGTHISDIFFERENT3BILAMPEREFORCE,PERPENDICULARTOEACHOTHERLORENTZFORCE,THEFORCEOFTHEFORCETOTHELEFT9ELECTROMAGNETICINDUCTION321ELECTROMAGNETICINDUCTIONMAGNETICINDUCTION,FLUXVARIATIONISACONDITIONTHECIRCUITCLOSESWITHACURRENT,ANDTHECIRCUITBREAKERISTHEPOWERSUPPLYTHEINDUCTIONELECTROMOTIVEFORCESIZE,THEFLUXRATEOFFLUXISKNOWN2THEDIRECTIONOFLENZSLAWISTHEKEYTOPREVENTCHANGECONDUCTORSCUTTHEMAGNETICLINE,ANDTHERIGHTHANDRULEISMORECONVENIENT3LENZSLAWISABSTRACT,WHICHREALLYUNDERSTANDSFROMTHETHREEPARTIES,HINDERSTHEINCREASEANDDECREASEOFTHEMAGNETICFLUX,ANDTHERELATIVEMOTIONISRESISTED,THESELFINDUCTANCECURRENTWANTSTOSTOP,THEENERGYCONSERVATIONSHOULDBEYOULOOKATTHEMAGNETICFIELDINTHEFIRSTPLACE,WHERETHEINDUCEDMAGNETICFIELDISGOINGTOGOUP,ANDALLTHEMAGNETICFLUXINCREASESORDECREASES,ANDTHEAMPERESETISKNOWNTOTHEI10ALTERNATINGCURRENT321THEUNIFORMMAGNETICFIELDHASCOILS,ROTATINGTOGENERATEALTERNATINGCURRENTTHECURRENTVOLTAGEELECTROMOTIVEFORCE,THECHANGERULEISTHESTRINGTHENEUTRALSURFACETIMEISSINE,PARALLELTIMEISCOSINE2NBSOMEGAISTHEMAXIMUMVALUEANDTHEEFFECTIVEVALUEISCALCULATEDWITHHEAT3TRANSFORMERFORACUSE,CONSTANTCURRENTCANNOTBEUSEDIDEALTRANSFORMER,PRIMARYUIVALUE,SECONDARYUIVALUE,EQUALITYISPRINCIPLERATIOOFVOLTAGETORATIOOFTURNSTHERATIOOFTHECURRENTTOTHERATIOOFTURNSAPPLYTHERATIOOFVARIABLEPRESSURERATIO,IFYOUWANTTOFINDTHENUMBEROFTURNS,TURNITINTOTHETURNSFARAWAYFROMTHEPOWERTRANSMISSION,THEVOLTAGEDROPISSENT,OTHERWISETHEUSERWILLLOWERTHEPRESSURE11GASEOUSEQUATION33STUDYTHEQUALITYOFTHEGASANDDETERMINETHESTATUSOFTHEPARAMETERSTHEABSOLUTETEMPERATUREISTHEVOLUMEOFT,VOLUMEISVOLUMEPRESSUREANALYSIS,NEWTONSLAWFORYOUTHESTATEPARAMETERMUSTBEFOUND,PVISEQUALTOT12LAWSOFTHERMODYNAMICSTHEFIRSTLAWOFTHERMODYNAMICS,THECONSERVATIONOFENERGYHOWMUCHINTERNALENERGYCHANGE,HOWMUCHHEATYOUCANDOPOSITIVEANDNEGATIVESIGNSNEEDTOBEACCURATE,INCOMEEXPENDITURETOUNDERSTANDTHEINTERNALENERGYANDHEATABSORPTIONAREPOSITIVEEXTERNALWORKANDHEATRELEASECANREDUCENEGATIVEVALUES2SECONDLAWOFTHERMODYNAMICS,HEATTRANSFERISIRREVERSIBLE,HEATTRANSFERANDHEATTRANSFERWORK,WITHDIRECTIVITY13,MECHANICALVIBRATIONS34THESIMPLEHARMONICVIBRATIONSHOULDKEEPINMINDTHATOISTHEDISPLACEMENTOFTHESTARTINGPOINT,THEDIRECTIONOFTHERECOVERYFORCE,ALWAYSINTHEEQUILIBRIUMPOSITION,THEMAGNITUDEISPROPORTIONALTOTHEDISPLACEMENT,ANDTHEEQUILIBRIUMPOSITIONISU2OPOINTSYMMETRYDONTFORGET,VIBRATIONSTRENGTHISTHEAMPLITUDEOFVIBRATIONSPEEDISACYCLE,THECYCLE,4AWALKPENDULUMCYCLETHANLG,NTHROOTBY2P,AGAINPLACECYCLEFOR2SECONDSSECONDS,SETABOUTLENGTHOF1METERLONGTOTHECENTEROFTHECENTEROFMASS,THEPENDULUMHASEQUALTIME3THEDIRECTIONOFTHEVIBRATIONIMAGEISTRACEDFROMTHEBOTTOMTOTHETOP,FROMTOPTOBOTTOMTHEDISPLACEMENTOFTHEVIBRATIONIMAGE,THEGREATDISPLACEMENTOFTHEBASEPOINT,THEPOSITIVEANDNEGATIVESIGNDIRECTION14MECHANICALWAVE341ONTHELEFT,ONTHERIGHTANDONTHERIGHTTHEPEAKPOINTHASNODIRECTION2FOLLOWTHEDIRECTIONOFCOMMUNICATION,FROMTHEVALLEYTOTHEPEAKOFTHECLIMB,THEBOTTOMOFTHEFOOTMUSTPUSHDOWN,UPANDDOWNTOMOVE3THEIMAGESOFDIFFERENTTIME,FOURPOINTSTONEORTHREE,PARTICLEMOVEMENTDOUBTS,SANDVTSENTTOUSE15OPTICSFORELECTIVE341SELFLUMINESCENCEISTHESOURCEOFLIGHTSOURCEANDTHESAMESTRAIGHTLINEIFYOUENCOUNTEROBSTACLES,THEPATHOFTRANSMISSIONWILLCHANGETHELAWOFREFRACTIONISTHEKEYPOINTOFREFLECTIONTHELIGHTMEDIUMHASREFRACTIVEINDEX,ITSDEFINITIONISSINUSOIDALRATIO,ITCANALSOBEUSEDWITHVELOCITYRATIO,ANDTHEWAVELENGTHRATIOISALSOCAUSED2TOTALREFLECTION,KEEPINMINDTHATINCOMINGLIGHTISINTHELIGHTTHEANGLEOFINCIDENCEISGREATERTHANTHECRITICALANGLEANDTHEREFRACTIVELIGHTISNOWHERETOBEFOUNDPHYSICALOPTICSLIGHTISANELECTROMAGNETICWAVETHATPRODUCESINTERFERENCEANDDIFFRACTIONDIFFRACTIONHASASINGLESLITANDASMALLHOLE,ANDTHEINTERFERENCEHASADOUBLESLITANDAMEMBRANESINGLESLITDIFFRACTIONISTHEMIDDLEWIDTHANDINTERFERENCEFRINGEISSIMILARAPERTUREDIFFRACTIONOCCULTINGRING,FILMINTERFERENCEISMOREUSEFULITCANBEUSEDTOMEASURETHEWORKPIECEANDCANBEMADEINTOAMEMBRANEPOISSONBRIGHTSPOTISDIFFRACTION,INTERFERENCEFORMULASHOULDBEGRASPEDELECTIVE342LIGHTMETALCANPRODUCEELECTRICITYANDTHEINCOMINGLIGHTHASALIMITPHOTOELECTRICKINETICENERGYANDSMALL,ITSRELATEDTOTHEPHOTONFREQUENCYTHENUMBEROFPHOTOELECTRONSISMOREANDLESS,WHICHISCLOSELYRELATEDTOTHELIGHTINTENSITYTHEPHOTOELECTR
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