2021-2022学年陕西省西安市莲湖区高二（下）期末物理试卷（附答案详解）

《2021-2022学年陕西省西安市莲湖区高二（下）期末物理试卷（附答案详解）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2021-2022
▷ḕᱥᳮᔁஹᓫ⌱⚪ᜧ⚪ᐳ8⚪ᐳ32.0ᑖ1.!ᘤ#$%&ᵯ()ᓄ+ᵯ(,-./0ᙢ2(ஹ3ᜐᳮ56ᑴ஺ᑡ:;<=Ḅ?A.ᵯ@ABC!ᘤ?DEᦋGH᩽JᵯKᦋGᵯ@ḄB.ᐝMᵯNᙠ!ᘤPḄQᵨ?SᐝTU)ᓄ+ᵯTUC.WX?YZᵨḄ[!ᘤᐸQᵨ?SᵯTU)ᣚ+[TUA.^_`Eaᙌcde!fᵯgB.^_hijᜧ`EaᙌkdeḄ!fᵯgjC.laᙌmnop^_`Eaᙌqcde!fᵯgD.᝞stuaᙌmnᦑwxᨵᵯg“ᵯ{|”q,-

14.᝞?+{ᐝmḄ{#£/eV-0.54{ᜐn=4Ḅ¢£᝱¥¦§¨£ᙢ©3-0.85-1.51ªᑮ«¬#k-:;ᔠᳮ¯Ḅᨵ-3.40A.ᨬµ,¶·m4Y¸¹⚣᳛Ḅᐝ{B.ᵯ{½⍝¿ÀÁÂ#⌕ÄᜧC.{©ªk,£mÆǸoḄᐝa1-13.6D.ᵫn=4#©ªᑮn=1#k£mᐝ{Ḅ⚣᳛ᨬ5.᝞ᡠ+ËÌÍaᐙᵯᘤḄÏÐᐸ~QᳮᳮÑGKᘤ¹஺ÒÓ£·ÔᦈaᙌÖᦪØn*n=10Û1,CஹCÝḄ3mᵯgi=2&sin2ᐔx1஺3å4,ᑣ2ᐵ4BÝ3ᐭᵯgḄéê┯ìḄ?)A.ᕜ+1x10-35C.ᨬᜧí+î46.᝞ᡠᵬ+/óôgᵯõḄᵯKök÷ᕜឋGᓄḄùúᡠ+û/óôgᵯõüý᩽þÿᑮḄᵯᕜឋᓄḄᑣᵬᵯᨵᦔA"U஺—OT_>Or>2ᵬA.1B.1"V2C.1"2D.2"17.᝞ᡠ()*+,GஹL2ஹL3Ḅ1ᐵ3R1

2A.ᑐ⌲[ᨩGஹ]ᙳᐜ`ᯠa⌲[ᨩB.bஹGஹcᙳᐜ`ᯠa⌲[ᨩC.஻eᓽᰐh]ஹ]ᙳ⌲[ᨩD.k⌲[ᨩieᓽᰐhjᐜ`ᯠa⌲[ᨩ8.k*lm10cmḄRnopq7᪾stᒴvwx7᪾y☢{wxᚖ9ᵯ110஺w6}v~BtḄᓄᐵ3᝞ᡠ(ᑣOᑡRSḄTA.1
3sḄ6}ᵯ3x10-5B.3
5sḄ6}ᵯ:ᜧ2x10-5^C.0
5s7᪾Ḅᯖὡ4.5xIO4/D.0
5s7᪾6}ᵯ:Ḅᨵᦔax10-5/1Aஹ⌱⚪ᜧ⚪ᐳ4⚪ᐳ16.0ᑖ9.t᝞ḄRSḄTaᦔ}

3ᓲᵫaᦣ¡¢£¤¥¦᪶aᦣ¡¢¨©Ḅᦪ«C.72Ḅ¬⚞ᨬv73᜛77ᙠwxḄ©²D.³᪶´{µ᪶¶a,¦᪶Ḅ·ᔠ¸¦᪶Ḅ·ᔠ¸¹º»10.¼½ᵯT»½ᵯᵯ¸¾ὑᵯ¾ᜫḄᨵᦔ⌶©ÂÃᢗÅÆḄ1000/cVᱯ¼½ᵯTÈÉÊËᵯᨬ¼Ḅ½ᵯÌÍ஺ᎷÏᵬஹÐᙢ¦Òᵨ500/cUḄÔ¼½ᵯ½ᵯ7˾ὑḄᵯi᳛ÖP=100kW,¾ᜫḄᵯÖU=40%ᙠ×ᢝ½〈ᵯi᳛½ᵯ7ᵯ1¹ÚḄᩩÜOᦋᵨ1000AVᱯ¼½ᵯÞÚὃ⇋ᐸâãäḄåæ½ᵯ7˾ὑḄᵯi᳛¾ᜫḄᵯᑣA.P'=25kWB.P'=50kWC.U'=10UD.U'=20V11.ç¡¢èᵨᵬᡠ(ᵯéẆëaஹbÐìᓫ⁐ᐝḄᐝᵯᦔ}ðñòó¡¢ᑮᐝᵯ:/{ᵯUḄᐵ3᝞ᡠ(ᵫ;õV4⚓ᐳ19⚓

4A.ᐝᵯḄᨬᜧö¸EkavbC.Ðìᐝ᯿pqKḄ⍎¥ik᪵D.ÐìᐝḄýþᵯÿ12.᝞ᡠᳫ4ᱥBḄᑖznஹ2m,B☢BḄᙊḄR,Ḅ!"#.%4&Ḅ!⚔(ᵫ☟+,-.ᑗ᥅1ᙳ3451()A.467ᑮ9Ḅ!⚔(B.4:;ᑮḄᨬ=>?@ABCC.Bᔣᒴ@:;D.Bᔣ:;ḄᨬᜧGH|RIஹJK⚪(Nᜧ⚪ᐳ2⚪ᐳ16.0ᑖ)13.QRᘤTUḼWXḄYZ[\ᙠ^;_ᑴabᢵḼd⌕fᵨ஺i᝞jAQRᘤ,l%jAmᣚᵯWp஺ᑴfjAQRᘤḄᩞᧇᨵtuᵯvwxtᵯvy஺(1)zẆ|ឋ~|yᵯvᱯឋ᝞JKᑖᔣa᎔ᐭ,3jAyᵯvḄv,᪷JKᦪḄvRjAtᓄḄ᝞ᵬᡠᵫltuᵯvᙠjAᓣ?¢ᵯ7£(⌱¥“§¨”ᡈ“«¬”)®¯wxtᵯv°tuᵯv¯jAᓄḄ±²³(⌱¥“uR”ᡈ“3uR”)(2)´ᑭᵨtuᵯv¶fQRᘤᑴfḄ·ᓫ^;¹ºᘤ»¼᝞½ᡠ,

5ᑣÀজÂjAÃ#?¹ºᘤIJcÅÆᙠ______È⌱¥"a”ᡈ"b”ঝÂÊ;¹ºḄjAË#ÌÅ%Í;vᘤÍᱏP>ᔣÈ⌱¥“”ᡈ“”ÏH;ঞÑÒᵯÓÔᵯ;Õ18VÈᑁv34Ïtuᵯv&9ᑮ10TCᵯvᜧ6000஺ÒÃtuᵯv&ḄᵯÒØÃ4?ÙÚ¹º,10mAᑣÍ;vᘤÅ⌱ÛoÈ¥ÜÝ⌱⚗ßḄàáÏA./?20
20008./?20
10000C./?0
2000஺Ï214.â~ᑭᵨḄãäbåæ“Kç;èឤêë”ḄJKìfíî᝞Àজᙠï☢Ḅ〉ñGòêóãäbåᘤÂᐸõᜐᑗ»÷ï☢®øãäùú?÷ûõüঝᙠ.ᙽÑúᩈÿ⊤☢ᐜ┑ᑏᩈ☢஺ᳫaᔣ!"#ᐸᵫ☟'()aᳫ*ᑮᩈᙠᶇ./Pঞᩈᔣ1223〉56789ᳫaᔣ!"ᑮ:;<=>?ᵫ☟'()@ᑮᩈᙠᶇ./A2টCDEFḄᳫb)ᙠ☢ḄHIaJKLঞMḄ()Nᵫ☟'()ObᳫE*Pᳫᙳ@ᙠᩈᙠᶇ./Pஹ஺3஺1STUVWXYḄᱥᳮYᨵ஺4.ᳫḄCDr^ᳫaஹḄ_YniaஹmbC.!"ḄYOᩈ67`Ḅ67aDᳫᙠᩈḄ/AஹP,P3ᑖcOPdeḄ67Gஹf2ஹg22STUMᡠ⌱ᵨḄPᳫḄ_Yᐵlmfṹ,q⌱rᡈt6⚓ᐳ19⚓

6“=”)o(3)Pᳫ*@ᳫa@ᑮᩈḄ/wm(⌱rPiஹ02ᡈA3)஺(4)ᵨ(1)MᡠXḄᱥᳮYᩭU{Pᳫ*@|}~Yឤᐸ⊤m஺(5)aஹbPᳫᨵឋḄ(_Y)IᳫaJKLঞMḄ()Nᵫ☟'()ObᳫE*Pᳫᙠ;@ᑮᩈᙠᶇ./ᑣ/”Ḅ>?ᙠ.A.PO&de8.P1OP2deCP2OP3de.ஹ⚪(Sᜧ⚪ᐳ4⚪ᐳ36.0ᑖ)15.(Ra)ᔊt;ᑖ7ᩭḄ)ឋᐗ¢£¤¥6RaḄC⊦§m1620¨,©Raª«¬ᙢ)a®`¯°ᡂ²᪶(Rn),´Raµ`᪶Ḅ_Ym226.0254m⊦°¶·ḄRnµ`᪶Ḅ_Ym222.0175”a®`Ḅ_Ym4.0026a,£¤luE5¸931.5MeU,¹º(1)ᑏ᪶»Ḅ}஺(2);ᘤ6Ra¬·a⊦°ᡠ)ḄªY½¾¿(ÀÁÂᶇÃ>ᨵᦔᦪÆ)(3)87.5%ḄÇ6Ra¬·⊦°ᡠÈᔊḄÉe஺16.;ÊË̬ᵯÎÏ=ÐÑ᳛mP=5.0xl03kW,Ó500VḄᵯÔᑮᓣ°ᘤᔣÖÐᵯ஺Ðᵯ×ḄØᵯÙm500,Ðᵯ×ÚᜫḄÑ᳛m500kW,#ᵨḄᓣ°ᘤஹÜ°ᘤÝᳮÞ°ᘤߺ(1)Ðᵯ×MḄᵯÌ஺(2)mà#ÖḄᵨᡝâãªäå220VæçᵯᑣÜ°ᘤḄµஹè×ᙌḄêᦪë½¾¿17.᝞íᵬᡠï12Ê☢ABO12ᙢ☢eḄðñòó=0.45m,;_Ymõ2Ḅöᳫ☟'ᙠÊ☢÷Bᜐ஺;öᙽᙠ12ᔣḄúûüçᵨ.J4Nᵫ☟'ýþᔣÿ
ḄᜧtᓄḄ᝞ᡠt=1.5sᙽᑮ☢!Bᜐ#ᓽ%&F,ᙽ'ᳫ)*+,(᩽/)+,1ᙽ2ᳫ34☢ᑖ67ᑮᙢ☢9ḄC:2஺:஺<=CஹD:ᑮB:Ḅ?4ᑖ6@0.6A1.8m,ᙽḄBC=0.3kg,ᙽ'☢Ḅ᥅EFᦪ஻=2J

7g=10m/s2,L:FN(1)%&NᙽḄOPᜧ஺(2)ᳫḄBC2஺18.᝞1ᡠᙠRS9=37஺ḄᐝUVWX9ᨵZ[Pា]^_WX`PḄᙳᒴWcdMN,V_e☢fgᵫ☟jkl«=0)஺WXn!oᨵZpᵯr@R=30Ḅst(uᐸᵯrwxPᓄ)஺ᙠMNnyZz?4ᜐḄ{|}~ᑁᙠᚖ_WX☢ᔣ9ḄᒴWXyᔣḄ[Pd=5m,PᓄḄ᝞2ᡠWcdMNᙠt=1sា]ᐭ}~ា]ᒴO
஺=WcdMNḄBCzn=15g,ᵯrr=30,WX[OPg=(1)WcdMNḄ[PL(2)WcdMNᑮWcdMN9N*ḄCQ஺8⚓ᐳ19⚓

8ᫀ2᪆1.ூᫀ௃Bூ᪆௃¥4ᵯ¦§¨©ªᘤ¬ᦋ¯᩽°Ḅ?4ᩭᦋᵯ¦ᘤḄᵯ¦²³´ᵯ¦ᘤµᐙlᵯµ·¸ᦋ¹ᵯºḄᵯ»ᦑ4┯¾B.ᐝ¿ᵯrᙠªᘤḄÀᵨ¬ÂᐝÃÄÅᓄ@ᵯÃÄ-¸Ç_Èᑴᵯºᦑ8ÊËC.ÌͬΪᘤᐸÀᵨ¬ÂÎÏÃÄÅᣚ@ᵯÃĸÇ_ᜐᳮ2ªÒᦑC┯¾஺ᐰÔÕ⊟Auᨵ×ا¨ÔÙÚÛÙÚᑭᵨ¹Ýªᘤᦑ஺┯¾஺ᦑ⌱¥B஺ªᘤÀ@ZßÂᐸà|§ḄÃÄ'ᵯÃÄáḄÅᣚÙÚᙠᡃãḄäå*æ´ᑮ¹çèᵨwéªᘤᡠÅᣚḄÃÄê·wéᡃãëàḄᐹcíᳮVᑖ᪆஺ªᘤîÂᐸïÃÄÅᓄ@ᵯÃÄàãᙠ*N*æᵨðåçèᙠñò⌕ôõcö஺2.ூᫀ௃Aூ᪆௃¥4ᙠ“ᵯøù”ûyº☢n◞ZØ?4ýuḄ¬“ᵯ
ᙌ”ÿ
ᜧᑖᙌᵯᙌḄᓄᵯᵯ!"ᙌᵯ#ᦑA%&'8.)*+ᜧ,ᙌḄᵯ!"+ᜧᵯ#+ᜧᦑ2┯.'C./ᙌ012,,ᙌ4ᵯ!"5ᵯ#,ᦑC┯.'D᝞789ᙌ0ᦑ:;ᨵᵯ#=>?@ᡈB@>C?ᵯDE5F%GHIᦑ஺┯.஺ᦑ⌱L4஺MᵯᙌNᵯᵯ#)*+ᜧ,ᙌḄᵯ!"+ᜧᵯ#+ᜧ'ᙌOPᩭ=ᨵᵯ#RS9ᙌḄTᙳ)*V90ᦑ:5F%GHI஺P⚪ὃYᵯMᵯḄᙌMᵯ#ᙌᵯ#ḄᓄZ[\]RᑮRS9ᙌ_`ḄTᙳ)*ᑨ1ᔲc)஺3.ூeᫀ௃B

9ூi᪆௃iL4ஹlAmᐵ1m5Fᵯ#ᦑA┯.'8ஹᵫ“ᩭqrᶇ”uvw☠yᙌᑣw{ᙌ|}᣸'ᵫ⚪Oluvwᔣ!ᙌḄᔣᔣᜧᵫuvᵯ#Ḅᔣ
ᑣᵫᑣuvᵯ#ᔣa,Rᑮb,ᦑB%&Cஹᵫ“ᩭqrᶇ”uvwᙌᑣw{ᙌ|}ᔾLᵫ⚪Oluvwᔣ
!ᙌḄᔣᔣ
ᵫuvᵯ#Ḅᔣ
ᑣᵫᑣuvᵯ#ᔣa,Rᑮb,ᦑC┯.'஺ஹᵫ“ᩭqrᶇ”uvwᙌᑣw{ᙌ|}ᔾ'ᵫ⚪Oluvwᔣ
!ᙌḄᔣᔣᵫuvᵯ#Ḅᔣᑣᵫᑣuvᵯ#ᔣb,Rᑮa,ᦑ஺┯.'ᦑ⌱LB஺ᐜᑨ1ᙌḄᔣḄᓄᵫuᑨ1ᵯ2Oᵯ#Ḅᔣ᩽`Ḅ|}Iᵨ஺ᙠᑨ1ᵯO᩽`Ḅ|}IᵨuᑭᵨḄ¡⊤£L“ᩭqrᶇ”ᑨ15¤¥ᵫ¦§ᑣᑨ1ᙌOḄ¥ᵫ᩽`Ḅ|}Iᵨᑨ1¨Ḅᔣ஺4.ூeᫀ௃Bூi᪆௃iL4᪷ª«=6¡uvV¬®Dᜐ°n=4Ḅ±N᝱³´µNᙢᔣ·¸F¹º»ᨬ½u¾¿06¡5À⚣᳛ḄᐝDᦑA┯.'Ä᪷ªÅÆuÇ,e2v2k^=m-È&=|mv2uÇL&=Ëuv®D·ÌF¹º»ᑮ·¸F¹ᵯDḄÍ⍝ÏÐ!F⌕ᜧᦑ8%&'C.ᵫ°ᵯDḄÍ⍝Dᓄ®DḄFDᓄḄᡠ®Dº»N05ÓÔḄᐝÕᦑC┯.'Dᵫn=4F¹º»ᑮn=1F¹N0ᐝDḄFᨬᜧN0ᐝDḄ⚣᳛ᨬᜧᦑ஺┯.஺ᦑ⌱LB஺10⚓ᐳ19⚓

10تᦪÚÛᔠÝÞßᓽuá0®DF¹`º»FN0ᐝḄ¡â'᪷ªÅÆã!FÝÞᑖ᪆!FḄᓄ'F¹äDᓄḄ¾¿ḄᐝD⚣᳛åFVæᱯḄè஺P⚪ὃYéF¹`Ḅº»v⍝ᔾᦈᡈ¾¿ḄᐝDFë°SF¹`ḄF¹äìFᳮiF¹DᓄÀîïáiº»ð0½ñ⚣᳛ḄᐝDᜧḄ®D4V9®D஺5.ூeᫀ௃Cூi᪆௃iL¨B.᪷ªCஹ஺õḄö0ᵯ#i=2V^siný2?rx1஺3"4,ᵯḄ3=2ᐔx103rad/siᕜT=2n-xw3s=1x10-3s,⚣᳛/="=^Hz=10^Hz=lkHz,ᦑAB$%஺CD.Cஹ஺&Ḅ'(ᵯḄᨬᜧ+5=27^4,᪷0”=2=34B&'ᐭᵯa'"/2m9iiuḄᨬᜧ+AmᦑAஹ8&'ᐭᵯḄᨵᦔ+/]=A=g4=0.24஺$%DC┯G஺H⚪⌱┯GKL஺ᦑ⌱MCo᪷0ᵯNO+Ḅ⊤QRSᑮᵯḄDUVᑮᕜW⚣᳛X᪷0ᳮZ[\ᘤḄᵯ^_DSᑮ'ᐭ&Ḅᨵᦔ+`ᨬᜧ+஺H⚪a⌕ὃdefᵯḄNO+Ḅ⊤QRghiᨵᵨklḄmnD⌕opqrst஺6.ூwᫀ௃Aூz᪆௃zM|ᵬ~ᵯDᦑᨵᦔ+Ui="oD|D᪷0ᵯḄᦔMᔞxE="rR2Rzᓽ=ញ=DᦑA$%DBCD┯G2ᦑ⌱M4஺᪷0ᵯḄᦔᵯḄᨵᦔ+Dᓽ஺ᨵ$[ᵯᨬᜧ+`ᨵᦔ+VIḄᐵDᐸ[ᵯ⌕᪷0ᨵᦔ+Ḅ

11Dfᦔᨵᦔ+.7.ூwᫀ௃Dூz᪆௃zMSḄND¡¢W£Ḅ¤ᩭḄᵯ¦ᓽ§ᜫD©ᙌLg«¬®ᵯX¯°᩽²Ḅ³´~ᔣ`®ᵯ~ᔣ¶·Dᑣ2¦ᓽᰐºD©ᙌL`»¼£ஹ&᪀ᡂÀÁD¯©ᙌ«¬®ᵯÂÃDᡠS»¼ZÅᵫÇ[ᨩXᵫÉ&

12ᐸᳮḄḄᔠᵨ.At9.ூᫀ௃ABூ᪆௃4ஹ!"#ᦔ⊤&ᐝ(◀*ᐹᨵ-.E=/iv4᜜6ᐹᨵ7.p=%ᦑA<=>8ஹᱥᳮABᓲDEFGaI(ᦣKLMNOPQ(᪶STḄᦪ.VW10-15⊈ᦑ8<=>Cஹᵫ_`aKb2ᙠefghijklᡠnᐸhoᵯWyKbᐸrst⚞ᨬ᪷xyzᑣ`aKb3o<ᵯWaKbᦑC┯~>஺ஹ᪶᪶Ḅ᪶Ggᨵ.ᙳ⌕-.᪷xQ(᪶Ḅᔠ-b`a᪶᪶,Q(᪶Ḅᔠ-ᜧᦑ஺┯~஺ᦑ⌱AB„!"#ᦔ⊤&ᐝ(◀*ᐹᨵ-.6ᐹᨵ7.>aI(ᦣKLMNOPQ(᪶ST>᪷xyzᑣᑨ>᪶᪶⌕-.஺t⚪ὃ*!"#ᦔஹaI(ᦣKLMஹyKbaKbஹ᪶᪶Ạa¡¢⌕ὃ£Ạa¡Ḅᳮ¤¥஺10.ூᫀ௃ADூ᪆௃C஺ஹ᪷x/=¦§P¨ᵯb©Ḅᵯª¨〈Ḅᵯ¬ᡂᓽ¨ᵯb©Ḅᵯª¯WQᩭ|,᪷xU=/R`a¨ᵯb©´µḄᵯ¬¯WQᩭ¶W20V,ᦑC┯~஺<=஺ABஹ᪷x¹᳛»¼`aᜫḄ¹᳛ᵯ¬Ḅ¾ᡂᓽ¿P=41,ᡠ2n¨ᵯb©ᜫḄ¹᳛WQᩭḄW25AW,ᦑA<=8┯~஺ᦑ⌱ADaÂa¨〈Ḅᵯ¹᳛èᵯᵯ¬᪷x/=§P¨ᵯb©Ḅᵯª>᪷x¿Ä=MR§P¨ᵯb©ᜫḄᵯ¹᳛஺t⚪ὃÆÇȨᵯgḄ-.ᜫɹ᳛»¼Ḅᵨ⌕Ê˹᳛»¼gP=U/gḄᵯ¬UW¨ᵯᵯ¬஺11.ூᫀ௃AC

13ூ᪆௃Ìஹᐝᵯ(ḄᨬᜧÍ7-&ÏÐᵯ¬4ḄᐵÒn=eUÄᵫ⚪_`Óbᐝ᯿KᐝᵯÕÏÐᵯ¬ᜧᐸ⍎PḄᐝᵯ(ᨬᜧÍ7-ᜧᦑA<=>Cஹ×ØḄ⍎P¹ᵫ×ØtÙÚᐝḄ⚣᳛ÜᐵᦑC<=>BDஹᵫᐝᵯᦔ¾Ý=/in-%,^eU=hv-W,ᵫ⚪_`Óbᐝ᯿KᐝᵯÕc0ÏÐᵯ¬ᜧbᐝ⚣᳛ᜧᦑ8஺┯~>ᦑ⌱AC.FG_ÞßÏÐᵯ¬ᜧàᵫᐝᵯᦔ¾a=hv-%Ãa=ßaஹbáâᓫ⁐ᐝ⚣᳛ᜧà>⍎P¹ᵫ×ØtÙÚ>⚣᳛åᜧḄᐝ(-.åᜧ஺t⚪ὃ*ᐝᵯᦔḄæᐵç⚪ὃa¡è┐£ឋèëPὃ*Ajìía¡ᵨa¡Ḅ-Ì஺12.ூᫀ௃ADூ᪆௃Aஹî4ᑮðyñᨬòèḄóôW"nàᳫÃ÷øᡂḄÒùWẆû£Þ᪷xÒùü7.ýឤaÒùḄÍ7.Wÿᑣᓽ"=0,᪷Ḅឤ4ᑮBᙊḄᨬᦑA3ஹ"ᳫ4$%ᱥ'Bᙠ)*+ᔣឤ-.ᔣ+ᔣA/☟12ᑮᙊᨬ3Ḅ456ᵫឤ.89:mv-2mv-0,ABᵫឤ.89:mgR=1-2nl;ὶ=>9:%=2@v=5,ᦑ8┯BBCஹC4$BDᡂḄᙠ)*+ᔣFឤG4ᙠ)*+ᔣFḄHIᔣJ8ḄHIᔣKᵫL"ᳫMB⌕OPBḄHI⌕QᓄᡠT8UVOᒴH2ᦑC┯BDஹC4$BDᡂḄᙠ)*+ᔣFឤG42ᑮᨬJ.8ᔣK2ḄYZᨬᜧ\BᔣKḄᨬᜧYZ],_)*ᔣ+ᔣ᪷)*ឤ9:mv—2mv-0.ᓽ:m^2=0,>9:x=|/?,ᦑ£)஺ABᦑ⌱:AD.ᱥ'4$BDᡂḄ)*+ᔣUf᜜hᙠ)*+ᔣFḄឤG4ᑮḄᨬJ)*+ᔣFḄHIijkl+ᔣFḄHI᪷ឤ.8$ឤ.8mnhFᓣḄᨬᜧITpᑮᨬ3ḄHIG42ᑮᨬJ,BᔣKḄYZᨬᜧ᪷ឤ.8mnᨬᜧYZḄᜧ"஺q⚪ὃtuឤ.8$ឤ.8Ḅvᔠ⍝4ஹBDᡂḄᙠ)*+ᔣFy14⚓ᐳ19⚓

14ឤ|UឤG4ᑮḄᨬJBᔣKḄYZᨬᜧ஺13.ூᫀ௃aCூ>᪆௃>:1ᵫᵬVᵯᙠIFᓣJᵯ"ᵯhiMᵯᵯMIQᓄḄ஺2জI4Jᵯ"ᵯ¡6ᵯ¢ᜧឋQ⊖¡¥ᔾᔣaᦑc¨©ᙠ஺஺ঝᵯ¡6ᵯ¢UQ«¬®ḄI¯°±Qᘤ©ᐭᵯ´Qᜧ¨ᔣZ஺ঞ®J¶ᑴᵯ´ᵯR=1=¹0=18000ᵯ¼ᑮ100࠷ᵯᜧ"6000,ᑣ±Qᘤᵯ¿410000,¨⌱ÀC஺ᦑᫀ:1஺2জaঝঞC஺1ᵫᵬÁnᵯᙠIFᓣJᵯ"ᵯh|ÂᵯiÃÄÅÆᑖ᪆஺2জu«I4J®ᘤÈᵯ¡6ᵯ¢ᜧឋQ⊖¡¥ᔾᔣa஺ঝᵯ¡6ᵯ¢UQ«¬®ḄI¯°±Qᘤ©ᐭᵯ´Qᜧ஺ঞ®JᵫÉÊ.8mn¶ᑴᵯ´ᵯËm±Qᘤ஺>q⚪J⌕ÁÌÍḄÎÏÐÑᵯḄÂIḄᐵ2ᵨÉÊ.8ÔÕᳮ>஺14.ூᫀ௃BD>23Î=ᔁ+₠Cூ>᪆௃>:1"ᳫÜÝÞ⍝ßO*à2\ᩈâÂànãäḄåÜx,ᵫ*à2-89)*+ᔣ:X-=vtkl+ᔣ:L=^gt2>9:v=xὡçèé"ᳫaêᙠ6ḄP2\ᐸ)*íHIî"ᳫa$bðñçèßaḄêᙠ6Ḅ23\ᐸ)*íHI%,bḄêò6ḄB\ᐸ)*íHIh,%='%=xô'%=õöᳫçè45ឤ_ᔣK+ᔣᵫឤ.89:mv=mv4-a0aa

15mg3--r/úrn__m,maabὶFV9:ûü+"ᡠT◤⌕"ᳫQஹbḄm஺ஹznᳫᙠᩈḄPiஹP2ஹP3ᑖPḄLiஹGஹ5ᦑ80&'஺(2)*■,-./ᐭ1ᳫa345ᳫḄᐵ7*?>mb(3)᪷:(1)ᑖ᪆=>aᳫ-/ᙠ?@ᶇBḄCP3D(4)᪷:(1)ᑖ᪆=>FG⊤IJ*K=M+KD(5)-/5ᳫOPᙠQR*SᐰU4ឋ-.WXYZᜫᨬᜧᦑ஺ᐳ=_`”°4ឋ-.cd=fg%ᡠjd<"ᐳ<%ᑣ”ᙠP2n3⌱⚗C&'஺ᦑrᫀ*tপBD(2)>D(3)PD(4)_=v+_D(5)C3᪷:wFxᳮzᔠ|}~'◤⌕ḄᱥᳮDᐭ1ᳫḄᜧ-ᳫḄD᪷:'ᳫ.ᑮᩈḄDᵨ⊤᪷:ḄJ-./Ḅᵫឤ◤⌕FGḄ⊤IJD¡SᐰU4ឋ-.cᑖ᪆¢£Ḅ¤஺¥⚪ὃ¨©FGឤḄwFᳮªwFxᳮC&'ª⚪Ḅᐵ«ᵨ¬ᓽ=&'ª⚪FGឤ®¯°ᙠ±²³1B´~µᩭ·Ḅ¸¹஺15.ூrᫀ௃ªt(1)᪷:ᵯ₹ᦪឤஹᦪឤÀ886Ra-*862Rn+^He(2)⊦Å~®ḄÆZAm=m—m-m=226.0254u—222.0175a—4.0026“=0.0053uRaRnaËÌḄYAE=Amc2=0.0053x931.5MW=4.94MeKD(3)᪷:⊦ÅJÀm=zn(1)?0Óm=87.5%m0Ô16⚓ᐳ19⚓

16ªÀtt=4860Ö஺rt(1)×᪶3Ḅ¸J*ÙRa-ÚÛRn+^He(2)QÜ¡a⊦ÅᡠÌḄYC4.94MeU(3)87.5%ḄÙRa¡⊦ÅᡠÝᔊḄc*4860Ö஺ூª᪆௃(1)᪷:ᵯ₹ᦪឤஹᦪឤᑏ᪶3¸JD(2)᪷:᰿áâᚆY¸ËÌḄYD(3)᪷:⊦ÅJ⊦Å◤⌕c஺ὃ¨᪶3¸äᑏåæÆZçY¸Ḅᑁéêᵨ⊦ÅJ⊦Åc஺16.ூrᫀ௃ªt(1)᪷:nZ=&Rì=Àíᵯì®Ḅᵯî*2=R=ïð:=1004(2)ᵨᡝḄó᳛*Pᵨ=P-P>õᐭᦪ:ªÀPᵨ=45004஻᪷:Pö=UᵨIᵨfXT.eAজ.ஹ+ஹrr0ᵨ4500X103A=ÀᵨᡝḄᵯî*/ᵨ="=-ø.4500X103᪷:Åᘤᵯîúᦪᐵ7=ÀûÅᘤḄxஹüìᙌḄúᦪþ¡=ÿ==nI21004225011
(1)ᵯḄᵯ1004஺(2)Ḅᵨᡝ2201cLᵯᑣᘤḄஹᙌḄ!ᦪ#2250B11°ூ%᪆௃ᵫ)᳛+,-%ᵯ,/ᔠ)᳛+,1ᘤ!ᦪ#-%ᙌ!ᦪ#2஺3⚪ὃ6ᘤ78◤:;<=)᳛+,>ᔠ-%஺17.ூ
ᫀ௃%(1)᪷BF-tCDEFGHᡂḄ☢K⊤MNFḄOPQR0
1.5sᑁTNFḄOP%=ᗔx1N•s+2x0.5/V-s=2.4N-s0
1.5sᑁXYᙽ᪷B[P\ᳮQ^@"ngt=mv-01r%_`NFaYᙽḄbcᜧ^u=4m/s

17(2)YᙽEYᳫf8ghiᎷkYᙽḄbclYᳫḄbcmgiYᙽnYᳫᙳpqrs[tuᔣᨵx=|gt'2%t'=i=BCs=0.3syqᔣᨵXi=Vt',X=vt'r22QN=£=y|m/s=2m/s,v=^=^m/s=6m/s2YᙽEYᳫgh{|}\ᔣ~᪷B[PឤQb=m/i+mv22%m2=0.1kg
(1)_`NFaYᙽḄbcᜧ^4m/s஺(2)^YᳫḄP0.1%஺ூ%᪆௃(1)᪷BCD/ᔠ[P\ᳮQ%(2)᪷Bqrs[ḄᱯὅḄbc#/ᔠឋgha[PឤnPឤᑡ,YᙽḄP.3⚪⌕ὃ6[Pឤ\᪷B[PឤnPឤᑡ,ᙠᑖ᪆{|a/ᔠqrs[Ḅᑖ᪆>ᔠឋcᜧ஺18.ூ
ᫀ௃%(1)ᵫ⚪QRMNᙠ0
1sᑁpbcḄᒴ¢bus[᪷B£¤¥¦\QmgsinO-max%a=6m/s2MN§¨ᐭª«aḄbcᜧ^v=at=6xlm/s=6m/sMN¨ᐭª«pᒴbus[ª¬c®ᢝB=0.2T᪷B°Nq⊝Qmgsind=FF²E=BLv᪷B³´\ᨵ/=¶²·¸N+,F^=BILὶº%MNḄ»c/,=¼½¾=/o.oixiox(3)xo.65+3Tn=15m7B2V\0.22X6(2)ᙠ஺
1sᑁ¼¿À8Ḅ¬8ᵯ[ÁEi=Â஽=ÄÅx1.5x5V=4.5U¼¿ḄᵯÆ=Ç=È4=0.754ᙠ஺
1sᑁMNÀ8ḄᯖὡËQi=/frti=0.752X3x1/=1.6875/MNÌ{ª«{|À8Ḅᵯ[ÁE=BLv=0.2x1.5x6K=1.8K¥18⚓ᐳ19⚓

18¼¿Ḅᵯ/=Ï=Ð=ÑÒÑ4=0.34R+rR+r3+3MNÌ{ª«ᡠᵨaÔ0=4=JsMNÌ{ª«{|À8ḄᯖὡËQ2=I2rt=0.32x3x|/=0.225/2MNÕÖ×s[ᑮª«{|MNÙÀ8ḄËPQ=Qi+(J2=1.6875/4-0.225/=1.9125/
(1)MNḄ»cL1.5m(2)MNÕÖ×s[ᑮª«{|MNÙÀ8ḄËP1.9125/஺ூ%᪆௃(1)MN¨ᐭª«Úpᒴ¢bus[ᵫ£¤¥¦\-¢bc,ÛᵫbcÜÝÞᐵà-¨ᐭª«Ḅbcᙠª«pᒴbus[᪷B³´\ஹ·¸N+,ஹq⊝ᩩâ-ãäᩚ»(2)0
1sᑁª¬cᙳᒴæ^Ì{¼¿ḄªçPᙳᒴæ^¼¿À8ឤ\Ḅ¬ᵯ[Án¬ᵯ᪷Bèé¥ᵯª¬

19³´\-êMNḄᵯᜧ^ᵫᯖὡ\-ëìÙÀ8ḄËP஺MN¨ᐭª«íîាðpᒴbus[Û᪵Ḅè-ëìÙÀ8ḄËPòó¢ᓽQᑮëìÙÀ8Ḅ¶ËPQ஺3⚪ὃ6ᵯª¬Eᵯ¿ஹN7RõḄ>ᔠsᵨ⌕<=èé¥ᵯª¬

20ᑗᒘÀ8Ḅ¬ᵯ[Á+,øᮣúsᵨ஺⌕R⍝ᙠ¬ᵯឤ\a:Qsᵨᯖὡ\-ᯖὡË஺⌕ÒᙠMN¨ᐭª«Ú¼¿Ḅᨵᦔ☢Kx஺