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19¹_✂100%ḄÕ⁐ᵯG×Øᵯ)Ù〈ᑮᓅ¶ÜHᣚZ2/lᕒßàḄá?Nᓅ¶ÈᑖÄâã×äZ8“pZ”ᡈ“äZ”ᵯt²IÒÓ×ᵯḄ“°ឋ”ᙠåæçèéêëᨬᜧḄíîï)ᵯ2ᵯGðñ#Hᵯlò8“ᵯò”ᡈ“ᵯlò”îíᑮᜐᵯGôõ#ᑭᵨîGᵯÒÓᵯ±Ḅö¨ឋ2ᓅ¶·ᝍ¹÷²⌼ùᡠ◤Ḅᵯ)ᐰÈᵫt²Iã×ᓅ¶✌üᜧýþÿ⍝ḄᜧḄᨵᑭ“ᜧ”ᡈ“”ᕒ ⍝ Ḅ᥅!"$ᙠẆ'( )*+ᜧ,-ᕒ./01234.6)7▅9ᧇ;ᑮ,/Ḅ01p >?vḄᐵBCp=c./pv2ᐸ+CKLpM,ᵫᐵBCOPM,>?QᜧḄRS01Q“Qᜧ”ᡈ“Q”ᙠᓅU✌WᜧXYZ✂ᑁKLC]“103”“105ᡈ“107”Paூfgfi1jkஹm□kkopᯠrsstuv;ᑮwOxykszᵯk|〈ᑮᓅU~6)ᣚ>ᕒḄ ᓅUᑖ>ᵯzkᵯᵯ"46)ᵯᑮᜐᵯ"4ᑭᵨ"ᵯᵯḄឋz2ᜧXY ⍝ḄᜧḄᐸ⊤☢ᐝ¢ᙠ0"£4᪵kᕒ ⍝ Ḅ᥅!"z
20ᵫ¥Cp=C-*pv2,C+CwKLP⊤¦M,OPiM,>?QᜧḄRS01QzᙠᓅU✌WᜧXYZ✂ᑁM,>?§K,/01¨©ᜧ,0,ᡠ¬KLC^KTpaᦑgᫀi1Oxyz>zᵯz2zQzICTூ¯°±⚪ὃ7-ksᑖ´ஹᵯஹᵯஹ¢᥅!"ᜧµ¶ஹ>/01¬·ᜧ,0Ḅ¸¹ὃ7P¹¯º»ᔠឋ115. 6ᑖᜧ½|-20-ᡃ¿ÀÁᡊᶍMÄᐹᨵÆ⌕ÈÉ 1-20ḄÊᜧËÌÍkÎ◫᧿ÑÒÍÓO¬Ô⌴ÖL“×Ø”ᡈ“kL”-20ÁÚÛ6)ᦋÝḄÞ᪀¬àáoÍs“Ís”ᡈ“ὡ”ᜐãäÍåæᕒ6)çèᵯé“çèᵯé”ᡈ“êÍé” ZḄᛞYÝæὶB 2£í-20ᙠ£îæðñḄ)*+åæòó4000km,ôὑöM᯼øḄùL50t,úååæ4ûᑮḄüᙳþ"Ḅᜧ2.5X105N,ÿ ḄḄJ,Ḅᦔ᳛50%᯼Ḅ4X107J/kg-o20ᣚ ᦔ᳛60%Ḅ !"-20#$100km,%⁚'᯼'0.2t(ᶇ1*+ᦪ-ூ01031-20Ḅ4ᜧ6789:+;◫᧿>?8@%AB⌴9D-20EFGH ᦋJḄK᪀AMNO8PᜐRST8
21$ᕒH VWᵯYZ[Ḅᛞ]J$ὶ_2-a ḄḄW=FS=2.5X105NX4000X1000m=10l2J,᯼jᐰlmnoḄDQ=qm=4X107J/kgX50X1000kgsj=2X1012J,Ḅᦔ᳛T]=L=—^^-=50%{Q|2X1012J#$100km,ḄḄW=Fs'=2.5X105NX100X1000m=2.5X10l0J,ᩭὑḄ᯼ḄDm'=%=2_=2.5X1O{°Jqhq50%X4Xio7j/kg=1250kg=1.25t,-20ᣚ ᦔ᳛60%Ḅ ὑḄ᯼ḄDm”=%=2.5X——=1041.7kg=1.04173ᑐ'q60%X4X107J/kg'%⁚'᯼ḄD-m=1.25t-1.0417t^0.2toᦑ1ᫀ31-9D{8P{VWᵯY{2-1012{50%{0.2ூ⚪ὃஹஹᦔ᳛ḄFὃ8@ᵯYḄᨵᐵ£¤¥ᔠឋ¨©ª〉16.8ᑖ-®¯°Ḅ±⌼⃩´µ¶·Ẇ¹ᐹᨵ»ᜧ¼½1-¯°ᙠ·ᨵ¿“ᨵ”ᡈ“Âᨵ”-ÃឋA¯°Ä᯿ᱥὃ[Ḅ+?Ç¿“”ᡈ“☟É”-Ḅ{ÊËÌᙠ¯°Í‧ÏÐÑÒÓᑮḄÕÕÖ׿“×”ᡈ“Ö×”-!Ø!ØḄ“ḰÚÛ”
222-ᵫÝ·ÞßÝàᡠAᙠ·âḄãäå¿“æ”ᡈ"å”-ᙠ¯°Ḅ请□ᐝ᯿Öᑮ¯°Ḅѯ-,:âᐭ·â×í¯îᓄ¿ᱥñᓄòó-ᯠ õöᓽøùᡂûᨔþ ᐭ·Ḅâ|Í¿“|Í”ᡈ“ᔾᦈ”Ḅ3ᙢᳫᙌḄ4.25X104km,$%&92min,$*Ḅ+,ᜧ./7.7km/s3ᶇ15.ᦪ789&:;<=&>?@Aᙠ24hᑁEᔊG15HIJ>ᑣ;<=&Ḅ&:LḄMᜩO“Mᜩ”ᡈ“R”ூTUTW1ᑗᱥZ[ᐹᨵ^ឋ>ᡠaᙠbcᨵ^ឋdae᯿ᱥ>ὃhcḄ.iḄ5jklᦋn>ᡠa.iL$*ḄdᡃpqᑮssḄttLuᐝwxᜧyzklᢚ|Ḅ}ᦑ>b>ᡠaᙠJ‧&>qᑮḄttssḄ“Ḱ”d2b>yᑣḄ>ᐭb>ᓄ>ᯠᓽᡂ¢ᨔ¥xc>ᵫ§<Ḅ¨Zn©>ᡠaᐭbcḄ«JḄd3$*Ḅ+,W¬=®=l-25x1°WKm=7.7km/sdt92X60sᙢᳫᙌḄ$%&92min,24hᑁᙢḄHᦪW24X60min^H>ᑣ;<=&Ḅ&:LḄMᜩ15792min/H
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24ᜮḄÓ÷>ø᪗JGdᯠxûᔣêëᵨÓᚖÓ>ᚖÓ÷ḄýᓽþëîL ᡠூ⚪ὃᩨᩚḄᐵᙠ 19."2ᑖ%&ᙠ'᪗)*ᐵS,ᔠ.Ḅ/ᵯ123ḄNT—-ூ676ᵫ9,ᔠ*ᐵᵯ:;123<=:ᐭ;?=:)ᵨ?ABC123Dᢣᢣᔣᵯ:GᔣᑣᜧJᢣᡠᢣḄGᔣᓽ/ᵯ123Ḅ25^f;ᐭfᐝ2AO☠ 2ONV,^fᐝ2OB☠"“☠”ᡈ“”% 2ONூ676ᵫ^fᐝ2ஹᐭfᐝ2y 2ᙠ{O|☢ᑁXtuᔣ~ᔣ.ᢚtuᡠᙠ|☢^fஹᐭfᐝ2ஹ 2ᡠᙠ|☢ᙠO|☢]tu]ᑮ^fᐝ2ᡠnᵨopᢚḄrsᑖtuvMẆd^fᐝ2ᐭfᐝy 2vᔲᙠ{O|☢ᑁ jkV;ᐝ~{ḄGᔣᑮᐝḄvᵫᐝ⊤☢|ᐝᙠ^fḄ¡ᦑ ᪷¤^fShḄᑁ¥o¦^f§¨ᐭf§©Xᐭfᐝ2AO☠ 2VO^fᐝ2OBª☠ 2ᦑ7ᫀM^fᐝ2 ☠ூ©⚪vcdᐝḄ^fShḄᑁ¥⌕¬BᐝḄ^fShḄᑁ¥9⍝^fᐝ2ஹᐭfᐝ2ஹ 2ᙠ{O|☢ᑁ^fᐝ2ᐭfᐝ2ᑖ® 2r=^f§¨ᐭf§21. 8ᑖ%ᡠM“cd¯ᜧ°±²³ᨵᐵ”Ḅjklmjkµ¶Pᐜ¸ᨵ¹ºḄ¥ᘤ¼ᙠᵯ½¾]ᯠ.ᵨAÀḼÂᨵÃ2ḄᙊÅÆᐸÈÈᙢÊᐭ¹º'"¹ºËÌÍ%{VÎ
26PᙊÅÆP⊤☢ᡠᜐḄÍÐhyᵯ½¾ÒḄTḄÓÔm,ÎÖᦪ¤P⊤ᡠØ9ᙊÅÆḄÙÐM15cm,Xh=8cmVᵨÞß¾à¦Ã2áᙊÅÆḄâML2Nh/cm024681012...m/kg2.0002.0402.0802.1202.1602.2002.240..."1%jkµ¶'ᵯ½¾ᦪ⌲éêᜧVÃ2áᙊÅÆḄâ⌲éë°"“êᜧ”ᡈ“ë°”%"2%Xh=8cmVᙊÅÆìᑮḄ¯ᜧ°M1.6"“21.6”ᡈ“1.6”%Noᑖ᪆⊤'ᦪ¤o9ᙊÅÆìᑮḄ¯ᜧ°Êᐭ¹ºḄÆïᡂñò"3%ᙊÅÆḄôйºḄôÐ_òM1415oூ676"1%õ¥ᘤy¹ºḄö÷MGᙊÅÆ÷MG,ᵯ½¾ìᑮùMF,Ã2áᙊÅÆâMFâᑣᨵF—Go+G_Fᓽm”276 7ᓃmg=Go=2.OOOkg><10N/kg=20N,h=8cmᵯᦪ92.160kg,ᵫm”?@ᵯᦪAh=0ᵯᦪḄB9Cm,D9Fs^G-Fjjumag-Go=Amg,h=2ஹ4ஹ6ஹ8……12cm-ᙊ /ᐭF Ḅ GA/ᐭ?@ᡂIJ5ᑮḄ6 ᑖL9:2.040kgX10N/kg-20N=0.4N,2.080kgXlON/kg-20N=0.8N,2.120kgXlON/kg-20N=1.2N,1.6N,2.240XlON/kg-20N=2.4N,'MN(ᙊ 5ᑮḄ6 ᜧA/ᐭ12Ḅ GᡂIJ;(3)h=8cm-ᙊ 5ᑮḄ 91.2N,6 91.6N,ᡠ<ᙊ ḄP G=F6+F=1.6N+1.2N=2.8N,ᵫ6=0^Qp=gNRG=pᱥVg,ᓽ:2.8N=pᱥVg•জᵫVWXYZᳮNRᙊ 5ᑮḄ6 :
28F6=pgV,aᓽ:1.6N=pgXiV•ঝ4tজ+ঝNR:pw:pa=15:14oᦑqᫀ9:(1) ;(2)IJ;(3)15:14oூwxz⚪|}~6 ᜧADᨵᐵḄὃᦪ'ᑖ᪆ஹVWXYZᳮஹ@ஹP QP6 |⍝⚪22.(10ᑖ)>ᐶᵨᵬᡠḄᵯᘤRiḄᨬᜧᵯᵯ¥ᵯ¦§ᢝ4©ª«R6ᵯ¦⊤ᦪUQᵯ⊤ᦪIḄᦪ'¯ᙠI-U±3²w³ᡠ(1)´ᔠ¶ᐵS¸¹ºᘤR?(¼"R/ᡈ"R2”)ḄᱏÂÃᨬÄÅ(2)Æ᪷'²wᦪ'ᙠ³3ÈÉᘤRiḄᨬᜧᵯḄI-U±(3)᪷'ÈÉḄ±RRiḄᨬᜧÊ950(4)ᘤR2ḄᨬᜧÊÃË925Q(¼“20”“25”
29ᡈ“30”53ÍÎᘤR2ÏᐭᵯḄᵯ9Ðᵯ¦⊤ḄᦪÑᵯ¥ᵯ¦©ª«ÒÓÔÕMÎÖḄZD×ÉØÙÚÛÜÝ×ÉḄÞᑡÚÛ3ᨬ4ᔠᳮḄ⚗|_C¼áâ#A.ᵯ⊤zãᨵᵯB.äzãᨵᵯC.ᵯ¦⊤zãḄᵯ4åᜧD.ᵯ¦⊤æᵨ¸çÂÐூèqè:13|ᘤ&ḄᨬᜧᵯDMêëÑìÊᵯDMíᘤḄîᵨḄ|ᘤR2,DM9§ïᵯ´ᔠ¶ᐵS¸¹ºᘤR2ḄᱏÂÃÊᨬᜧḄᨬÄÅ! 2ᵨðḄº3ᡠ²wñíᩭᡠ:3.02.52.01.51.00.502.557.51012.5UN 3ᵫ±3N(6ᵯ¦⊤ᦪUQᵯ⊤ᦪIḄᦪ'ᑖ
30L9:(2V,0.4A)ஹ(4V,0.8A)ஹ(6V,1.2A)ஹ(8V,L6A)ஹ(10V,2.0A)ஹ(12V,2.4A),ᵫóôõN(6öḄᘤRiḄᨬᜧᵯ9:&=÷=^L=..=g=50.4A2.4ADMᘤR1Ḅᨬᜧᵯ95!(4)ᵫ±N(ᵯ¥ᵯ¦ÃË912V,ᵯ3Ḅᨬ90.4A,M¹Ḅᵯ¦92V,ᵫùὶᵯḄᵯ¦ᱯwQóôõN(MᘤR2ÏᐭᵯḄÊ:5i=%.=25,I0.4ADMᘤR2ḄᨬᜧÊÃË925Q!(5)ᘤR2ÏᐭᵯḄᵯ9Ðᵯ¦⊤ḄᦪÑᵯ¥ᵯ¦ᵫùὶᵯḄᵯ¦ᱯwN(◀ᘤR,ᨵᐗ ᑖᵯ⊤ᡈᨵᵯᑖᡈὅᵯ⊤ᙠᵨᨵ ᵯ⊤ !ᘤR#ὶ᪷&#ὶᵯ'Ḅᱯ*+ᵯ⊤, !ᘤRi-.Ḅᵯᨵ/0ᦑC⌱⚗4ᔠᳮᦑ⌱Cᦑ8ᫀ:;(1)R2=(2)?ᡠA=(3)5=(4)25=(5)Cூ*C⚪FG !ᘤRiḄᨬᜧᵯὃK !ᘤḄLᵨஹ?NḄOPஹQRSTḄUᵨVWXYZḄᑖ᪆ᐵ]+⍝᪷&?N_ᦪ&aSᵯbᵯḄᨬcdeஹfg⚪(ᜧ⚪ᐳ2c⚪ic⚪5ᑖᐳ10ᑖj⚪k⌕ᨵ
31 ⌕Ḅ!"ᦻ$%&'ᑏ)*+,-ᑖ)23.(5ᑖ)?ᡠAḄᵯ'_ᵯbᵯឤ:3VuᔠvᐵSxᵯRiḄᵯ{᳛:3W,ᵯR2Ḅᵯ{᳛:4.5W;(1)ᵯRiḄᵯ=(2)ᵯR2Ḅd=(3)ᵯ'ᙠ10sᑁḄGL4ூj8j;(1)ᵫᵯ'?+ᵯRIVᵯR2#ὶ=ᵫ#ὶᵯ'Ḅᵯᱯ*+R|ஹR2-.Ḅᵯ:;U1=U2=U=3V,ᑣᵯRiḄᵯ;1|=3^==1=3V2(2)ᵫP=UI=+ᵯR2Ḅd;2==(3V)2=2Q=RP4.5W2(3)ᵯ'_{᳛;P=PI+P=3W+4.5W=7.5W,2ᑣᵯ'ᙠ10sᑁḄG;Q=W=Pt=7.5WX10s=75Jo8;(1)ᵯRiḄᵯ:1A=(2)ᵯR2Ḅd:2C=(3)ᵯ'ᙠ10sᑁḄG:75Jூ*C⚪ὃK#ὶᵯ'Ḅᱯ*ஹᵯ{᳛¥¦VᯖὡSTḄUᵨ©⍝ªẠ⚪24.(5ᑖ)¬ᔆ¯°±²³´µ©ᙽ·¸◞º◞ᡂ¼½-¾ᑖ,
32ᐸÀ☢??ᡠA◞ºÂÃ-¾ᑖḄÄÅ4Æ◞ºÇľᑖÈ,ÉÇↈ¾ᑖ¼½-ËÌÍḄÄÅᙳ:0.1mÏ+◞ºḄ¯:10m,¼²³´ᑁ²ᨵ·Å:LlX103kg/m3Ḅ³±½²³´ᑁ²ᨵ·Å:1.3Ð103kg/m3Ḅ³±◞º¼ËÌ;ᑖḄÃ⊤☢ᡠᙠḄÑÅ:0.5m,◞ºÌ;ᑖ-ËḄÃ⊤☢ÒᑮḄ³±ḄÔÕ ◞ºᨬÖᜐÒᑮḄ-˳±ḄÔÕᙳ:1.0Ð103Pao;(1)◞º¼ËÌ;ᑖḄÃ⊤☢ÒᑮḄ³±Ô=(2)◞º½ËÌ;ᑖḄÃ⊤☢ÒᑮḄ³±ØÙᔣÂḄÛ=(3)¼²³´_³±ḄÑÅூj8j;(1)◞º¼ËÌ;ᑖḄÃ⊤☢ÒᑮḄ³±Ôp¼=p;gh/=l.lX103kg/m3gX10N/kgX0.5m=5.5X103Pa=4r=(2)Üp¼+Ýp=5.5X103Pa+1.0X103Pa=6.5X103Pa=½ËÌ;ᑖḄÃ⊤☢ᡠᙠḄÑÅh==Pg-------5X103Pq-------=0.5m=h4;,4Þ⚪ß1.3X103kg/m3XlON/kgᡠàp=p¼-Ap=5.5X103Pa-1.0X103Pa=4.5X103Pa= F=S=4.5X103PaX(lOmXO.lm)=4.5X103N=/3Pil
33½ËÌ;ᑖḄÃ⊤☢ᡠᙠḄÑÅh==P½g4.5XICpPa=9m;1.3X103kg/m3XlON/kg26(3)◞ºᨬÖᜐÒᑮḄ-˳±ḄÔÕ:LOXKTpa,íᔠîïð+Ap=p-pLOXl(ppa=p½8ñ-pgh',1.0X103Pa=1.3ssX103kg/m3gXlON/kgX(h+Am)-1.1X103kg/m3gXlON/kgX26(h+0.5m),jòh=lm=¼²³´_³±ḄÑÅ=lm+0.5m=1.5m8;(1)◞º¼ËÌ;ᑖḄÃ⊤☢ÒᑮḄ³±Ô5.5X103Pa=(2)◞º½ËÌ;ᑖḄÃ⊤☢ÒᑮḄ³±ØÙᔣÂḄÛ4.5X103N=(3)¼²³´_³±ḄÑÅ1.5mூ*C⚪ὃKó³±ÔfgôÅõö
