高考物理真题及答案

1、ABbdMNMN.MNAMBMNMAVAVBVVVVAWmgRAWmgRBWmgRmNmggWNWmgRWmgRWmgRWmgRLLgLA.B.LgLgLLgLLh.h.g.LggLghhhhhhhhABABmm/s.Am/sB_kgmmm_Nm/sbeqoac(,2)Aeqoac(,2)Vd_(b_.TVm/s.mgm/s._(ABEppKmmllKgm/s.nmmmm_mm.be_ABABAmBMAmMABABbbb.l.ABbbm/sm/sAm/sBm/sm/sm/sFFF.ABABABbmhbbbg.AbBghgbmg_m/s_m/sg_(ABeqoac(,V()VA)EV_.VVV_

2、V_mqqABABABmBBA(ABAmABBABBAABlmgm/s.ABB_ABEABABABKlAhKhKpABABb_AbBbbEbb_ABEbbA.B.A.B.hm/sgm/s.hAmBmmmLLABABA.B.A.B.ibbuudmmgdmgdmgdmgdg.ABFllFllF.F.FF.Fll_cm.F_N.FFFF_ILLI_(I_A.L_W(ml.lg.qqdmdmm_bdKp.KpKKKKhgm/s._hmbmdni_bdeeAMBNqqqqrFrABsCAbAAAAAVBVVdLnme.mmA.B.ii.A.B.A.B.ABA.ABA.B.MNrrlrlr.FFF_FFF

3、FFF_._(II(V)IE_Vrmm/sm/sm/sgm/s.FW.EmqlmmFF.neABA.147B.Am/sBm/sm/sm/sABABABeqoac(,A)AAeqoac(,A)AABAAA(ICICLLCICLAICBICLICbb_(AB_(AmBLng_(Ln.L/cmg_sg.Lg.Lbbbbgb_(ALBgbgllg_(llLmTMNFEIIFMNr.mFFFbbNEe.mbIEr.b.EE.hhhA.mghhhA.mgB.mgmgmgAbBbddmhMAB.GMmmhmghmghmghmghn.bbABF_(g_cm(gm/s_bIV_(V_MNeqoac(,V)_bd

4、LnI.MMNMNmLg.LMNMNhNONdkd.mqNNABp.p.MNMNABABmABmm/sbbABbbNeAeBeNeNe/m/mA.BMNbbMNANBNNMNLdMNTmem/slAlBlllll_llll.gF_N(gm/s_Fr.VAAV(V).II.III_rIr_km/hEmm/sFFgm/sm/sMNLNMNMNQ.mLNQg.NQdNQNQABAB图VVAB11ABABXY31XAXBYABABMNMNAMNBMNMNM_(_(_XYX_(_(XYI_(XYErVVE_VrLmbdL.m/sEFimm/sLmmgm/sFnnnbbbnnbAnbBbnnbbnbnnb

5、rrA.B.rrrA.B.rrnmB.nmA.nnrnrrrrrrrTnnTumrrnrnnmm.bbAABl_ABlF_A_V_.mMmLmg.Mm.MNE.mqMNMNhg.W，从._ABb.bb._A.bB.bb_ABBiBiBimom_ABABbAbBbbbmbmbAm/sBmABmLLABABEEAEBrrAB_ABmmmL.g_.VAABAVVEAFA_(_._m/smgm/sW.mlll.lpqpq.g.d.Emqrnnn.A.B.A.BVVABABmm/sm/sABABABddAbBbddBmmBmh.g.Ammmgh_A.(V)I(A)IE_Vr_AB._ABABA_AB_(

6、_(LL_ABm/sm/s_(n.Kr_AB_(mpmmrTE.L.L.L.L.LLlmg.W.L.MNL.MNMQQNMNLOMMQQNMNmQNQNMQAB.ABABAAh.LhhghgLgLhLmABm/srr.mr.F.ABMNFF.mgm/sABFFMFFFFABE_AV_._LmmLmmgm/sm.LmmN.TAI.gm/sNNdm.mr.LqEII.mNLLII.mNLLLLg.r，则，故，故hhgt.h.hgtmmMNNMNBAMMBInIInInnVVAANNNFNFNmgFNFNmgNENmNmgR.mgWENWmgRWWmgR.NWWW.NmgRWmgRWmmNmmgRW

7、LLg.mgmamgmamggMgM，则1MAABmMAAABmMABBABmMmMmMmMmMmMABmmMMmMmMmMMmMebMmMbVBB.BBABABmABm20qmmqABNABNBNNmgNNNmgABmgmamgmaNNm/sm/sm/sm/sABAB.ABm/sBBABmmg.BEEEdhWmmWEggAAMmrmamgFFmmmBABEMNEEMNEEEBimgmgu0uuiuu0umg.mggmdABEpmgmgdmgdWmgdmgdWWBCllFFFFFFFFFFFFFFFFFFLImEImEIIIIAILUII)IIIALFMmgFMgFFFmgFMgMmWmglW

8、mFFFmgmlFMgWmglmmglEdmqdqmqmqmqmmmmmbmhgtbmhgthmirrdFpmmmqdbKpKpppppmppmgKppKpppFFppmgpmmdirndddndddddiidnninniinb.146edmmmmWWm20mWWmmWWmmrqqrqqF，故qFmaFmasBIIEEVbVAVVVVVBIIIIIIIdqnLLiiiiiAnAIBFBIlIEE.EAElElrrllrrlrlrrBF.FFFF.VWWmmmFmmFmaWmamllmmmmmrFFrFmFmmmF.mmmrFrrmmmFFFFF，可得FFFF.FFFGmmGmFFmmm.Gmm

9、BABWABW042BBBMmrrmrmrmarrrrp.qp.qr.mmprABAeqoac(,A)Aeqoac(,A)IIAIAAIIAAAIIAIAAIIAAAICLAICBLICICBmAnggg.ggm/s.LLLBBggggALgl.Lgllllllgg22.g.llB22IllB22IAA.rnLEBLVVEFBILIFFEIAAIVVAVFWT.W()(21()()(WTWW21EpWTbWbEmEemeINeEemEmeINeINeEEr.ENENENINeINeIUNENeENeEEeeNehhFhhFmg.mgFmFmg.AEnnbbngthgtmbdMmmggBBhgh

10、ghFFmgmamghmghAbFmgmaFBBghh.Wmg.LLhh.Wmg.LLqmqmMbdFFmgmFmgIIMdbdbdgFBILFF.gtLLgLL.h，则，得hgt22LFFWmgRWmLgLmgmgmkdUqmqkdnmrkdrnUqmmqkdmqqmrrkdnnUqmrnrnrnnbbee.NNeENeGMmrrrrArgBNbANBNBCeemlALlEEVr.rIrIrlFIA.VIErr.IrArArgEErrI.mFWW.WM.WWWWWM)WMeqoac(,10)m/sFFmam/sFFmaFqFmaFFEFEFFFEeqoac(,)WWeqoac(,10)WEW

11、WWWEWWEmWmEIqIIqeqoac(,?)FLLLEqIEdLdLdLLLEELEIIFFBILFmF.FmFmgmgFmmgmFmFFAUIIBAUIIBVVnmmqmrmrrqmrqqmqA.AB.BBIVVnnmmmmqmABq21q14BBABAApAB21X10nXYYLiYABXY42BABCMmmmMmMMFGMmMmFBMXVXm/smgFmmIAAFmgbYLEnEVbdEBLVVEFBILleeVimmgmmmm/snmmnnm/snnbn.E.AArrrr，当rr，当rEIAEEBFBIlllFrrIAAVVIAnEErIIIrEIVIVVIAUIAm/smmmN

12、mgmNmgmm/sm/sm/smgRmNmgNmgmgRM2mmmmLmgLWmghmgRMmmMNqNMNNEmghWmg.gmmgmghmgmghmgp，得bbbbBigggErrrABBppppbb，即bWbW.ABgpmm.pm.AABBAAnABbBnbbmBmBBIIIIAB.lbAmgrgrBALhLEpmghBBnIn22IIIBCdmdElmmEdWEAdmdmdmBBLElmAEdMmmaMrMmmBMmrrmrrmmmmmm.mmmmBLLLgLg22LL22Lg.AAVF.dghErErErEE22AFdghrrEERLBCFFmFxmFxmmWWmEEIEIFFIm

13、gFlleqoac(,10)lmgRBlmglmmglm22mmgmgmmqmqmrqqqmnqmmrnnrrdrrdrrrdeqoac(,1)eqoac(,1)mrrndeqoac(,10)nrdnqdnqnqqmm1nnmmmrBrrnnnBBABMmMrMBEnnAAm/smmm8mmmmFmgFFmgma.FFFmgma.FAFABFFBCbAbBddddddAWEpmghEpW.mEpWmgh.WmEpmghm.BEpmEpWmghmEpmghWAAA.IVEVIIABnnnnABFppLLppLLBABhppmEKr10nmmpmmEmcErrEEV.EVF.LFFmgFmgFmgLF.FLFmgLFmgF20llgL.WmgWmgmgmlW.rrqrLm.rrLLF.FLmgFlFmgF23lgLLLLLmglLmggmglLLLmqmmULLNrLNrLNrLNrLnrLA.LrLrrLrLrLNrLrLLrnIABAABhLLhhAhgtBmghBmghgLhhhghmmgLmLB