2023年广西贵港市中考模拟物理试卷（附答案）

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2023
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ᔠàáᵯâRãVâᘤ(ὶᵯ⊤äãVâᘤ7åḄᵯᵯD⊤äᵯ%PḄᵯD஺জᵫÞ£¤ᵯ⊤Ḅçè~0~15V,ᑖ¨á~0.5V,ᑣãVâᘤḄãᱏPãëPìVâᘤ7åḄᵯU,í9V,}(ὶᵯ%PᔜᜐḄᵯD©»ᡠÆᵯ%PḄᵯD}(ὶᵯ%Pðᵯ»ᔜᑖᵯñ+ᡠÆàáᵯâ7åḄᵯò18V-9V=9VᑣàáᵯâRḄâáR=4.=2L=IOCI0.9Aᦑজ┯·ঝᵫãVâᘤḄôõ£¤ᵯ%PḄᨬᜧᵯD/K=1A,÷ãVâᘤøᐭᵯ%PḄᵯâᨬz÷ᵯ%Ḅðᵯâ„U18V==-------1812ð/ᜧ1A}(ὶᵯ%Pðᵯâ»ᔜᑖᵯâñ+ᡠÆãVâᘤᐕúøᐭᵯ%ḄᨬzâáR/Rff-R=18C-10Q=8஺ᦑঝ×ØঞãVâᘤḄãᱏPᔣüýVâᘤøᐭᵯ%PḄᵯâVzᵯ%ḄðᵯâVzᵫᫀ4⚓ᐳ17⚓

14/=%£¤ᵯ%PḄᵯDVᜧàáᵯâR7åḄᵯVᜧᵫ(ὶᵯ%Pðᵯ»ᔜᑖᵯñ+£¤ãVâᘤ7åḄᵯVzᓽᵯ⊤Ḅÿᦪ
ᦑঞ┯টᵯḄᨬᜧᵯ/1A,ᑣᵯὑḄᨬᜧ᳛U/=18VxlA=18W'()
*ᘤ,ᐭᵯḄᵯ*ᨬᜧ.ᵯḄᵯUU18V=0.6A&R+%10Q+20Q5.()
*ᘤ67Ḅᵯ8Ud=FR90.6Ax20Q=12V<15VᑣᵯḄᨬᵯI஻,=/'=0.6A5.ᵯḄ᳛ᨬᵯὑḄᨬ᳛PUIyF18Vx0.6A=10.8WᡠAᵯὑḄ᳛Ḅ
ᓄDE10.8W-18W,ᦑটGH஺JKLMঝটGH஺ᦑACD┯BGH஺ᦑ⌱B஺11.S⁐UVூX᪆௃ூ[X௃[I]_`ᱥbcdḄUSḄS⁐e_`ḄfghiḄ“f᠗lS”LAnopqUSrsthiX┝vwxy⌕e᪷|USḄS⁐}~ᱯᩭḄ஺ফᡈ.hiᡂ☟S᝱eEᙠUVᜐU஺12.78ூX᪆௃ூ[X௃AE᯿ᱥᙢᳫḄᨵ
ᓄ¢g£ᑮᙢᳫᙠ¥)ᡠAeAE᯿ᱥ஺ফ¦).§f=10s,ª«v=7.8km/s,¯°ᕒ²ᙢᳫᜧ³¦)Ḅ´µ5=vr=7.8km/sxl0s=78km13.¸¹º»¼½ᫀ¿5⚓ᐳ17⚓

15ூ᪆௃ூ௃[1]“Â''ḄÃᡂᱥ᝱
ᓄeÄÅÆ⍗ÈÉ,¸¹ᡂḄÊᨔ஺ফᙠᵯÌ▾ᔜÏÐKÑg£ᑮÒÓKḄÔ☢eÖEᐝᙠÒÓKcغ»¼»¼ᐝÙ¼ᔣᔜÏÛᔣ஺14.ÜÝ¿Þßூ᪆௃ூ௃[1]àáâãÜÝ¿äoåæẆèé1831êcsᵯëìísîXï“ëØᵯ”Ḅð⚪Eòó“Åô.õ''öᐭ"ᵯÆ.õ”dᓩùḄúû஺ফᓅýὅÞßᙠÿ
ᢣᓭ┐ᢣᔣ“ᐰᓭ”ᓽᙢᳮḄ᩽ᙢḄ᩽!ᔠ┐ᡠᢣḄᓭᓅ%ᔣ&ᙢᳮḄᓭᓅ%ᔣᶍᨵ)*+,-./0ᢣ1ᙢ)2Ḅ345஺15.ᒓ9:ூ᪆௃ூ௃;]ᵫ>?@ḄABCᑖEFGᒓ9ᡠHᙠJ@K?@KLMᐭMO@PQᑮ?@LḄO@᡽ᦣU⁐W஺ফᑖEYZ[ᙠ:\ᡠH]^‧ᑁ@Mᕈᙊᳫd஺16.ᜧfூ᪆௃ூ௃UH2]ghijkWilḄmnkfᡠHo;ᜐ᯼rijᜧmnf>ᜧrm᯼r^rᙠᜧrmḄsᵨuiᔣvwᜮy᯼rPᔣ^rLz☄஺17.362.6800ூ᪆௃ூ௃|ᵯ~⊤Ḅᦪᦪ%᪾Lᨬ/0-fᦪᓫ0-kW-h,ᵫᵯ~⊤Ḅᦪh362.6kWh஺ᫀ.6⚓ᐳ17⚓

16[2]600r/(kW-h)⊤ᵯLᵨᵯᘤὑlkW-hᵯ~ᵯ~⊤Ḅ600ᑣᵯ~⊤Ḅ8ᵯᰄὑḄᵯ~ᵯᰄḄᵯ᳛2w-=-kWhP=—=-------=0.8kW=800Wt±h6018.uூ᪆௃ூ௃;]᤬¡ᜮ¢£>/¤¥¡¦§¨ᱥªᜧ>2«ᯖª஺¥¡ᡂ¨ᱥªᜧ>«ᯖªᡂ᎔¯ஹ±fḄ²஺ফ⌕´§1Ḅµ¶·ᜧ/¸ᓽUᜧᑣªUᜧᱥª¹fᓽº»¼u/¸஺19.5150ூ᪆௃ூ௃[I]£SஹS1½ᔠS2¾¿¼ᵯhLRḄÀὶᵯᵯi⊤ÂᵯLḄᵯiᵯm⊤ÂRÃḄᵯmÄŨÆÇÈÉᐝᑣÆÇÃḄᵯmhS=2.5V,ᵫËŨÌLḄᵯihA.=0.25A,ᓽᵯLḄᵯih/=/L=0.25Aᵫ⚪ŨÎGUÏᘤÐᐭᵯḄÏÑhVÒÓ=10஺P22ᵫ/==ÎGUÏᘤÃḄᵯmhRUR=IRL=0.25AX10C=2.5VᵫÀὶᵯḄᵯmᱯ×ᵯØᵯmhU=U«+(4=2.5V+2.5V=5V[2]£SஹS2½ᔠSi¾¿¨¼ᵯhR&ḄÀὶᵯᵯi⊤ÂᵯLḄᵯiᵯm⊤ÂRÃḄᵯmÄÚÎGUÏᘤᐕÜÌḄᨬᜧᵯih/R=0.5A,ᵯi⊤ᡠ⌱Þßh0-0.6A,ᙠàáᵯâᐰḄãäuᵯLḄᨬᜧᵯihᫀ.7⚓ᐳ17⚓

17I^=/K=0.5AᑣÌᵯImin᦮¤ᵯὑḄᨬᜧᵯ~hW—U1ᜧf=5VxO.5Ax60s=150J20.12.53x103ூ᪆௃ூ௃ᵬÈ%lḄlçVtp—a3—(5cm)3—125cm3=1.25x104m3ᵬÈ%lḄè☢çSifi=a2=(5cm)2=:25cm2=::2.5xl03m2ËÈ%lḄlçV=a3=(10cm)3=1000cm3=1.Ox10Jm3vËÈ%lḄè☢ç5Ë=”=(10cm)2=100cm2=1.Ox102m2ᵬÈ%lḄêÞmip—pViji—3.0x103kg/m3x1.25x104m3=0.375kgËÈ%lḄêÞm^—pV=3.Ox103kg/m3x1x103m3=3kgᵬÈ%lḄ!\G=m*g=0.375kgxl0N/kg=3.75N/pËÈ%lḄḄ!\GËg=3kgxlON/kg=3ONëËìíî%ᔣᑗᒘ/ñᑖòóᙠᵬḄÈô%õËÈ%löᑗ÷ñᑖḄè☢çh5cm2,ËÈ%löᑗ÷ñᑖḄlçV—Sh—Scm2x10cm=105cm3=Sx105m3ËÈ%löᑗ÷ñᑖḄêÞᫀ.8⚓ᐳ17⚓

18mI'=pøË'=3.Ox103kg/m3xSx105m3=3Sxl02kgËÈ%löᑗ÷ñᑖḄ!\G1'=w^!g=3SX1o-2kgx1ON/kg=0.35(N)ËÈ%lᒕûñᑖḄ!\Gz"=Gz-G/=30N-0.3SN=30-0.3S(N)ËÈ%lᒕûñᑖḄè☢çS"=S"S'=100cm2-5cm2=(100-S)xlO^m2ëËìíî%ᔣᑗᒘ/ñᑖòóᙠᵬḄÈô%ᵬÈ%lü@ýᙢ☢Ḅm\Fo=G~GË'=L25N+0.3SN=3.75+0.3S(N)ᵬÈ%lü@ýᙢ☢Ḅmn_E_3.75+0.3S(N)P'V~'S^-~25x103/ËÈ%lᒕûñᑖü@ýᙢ☢Ḅm\FË=GZ"=30-0.3S(N)ËÈ%lᒕûñᑖü@ýᙢ☢ḄmnŨᵬÈ%lü@ýᙢ☢Ḅmn&ËÈ%lᒕûñᑖü@ýᙢ☢Ḅmn¢þᓽ:┐xUPa=3xUPaS=12.5(cm2)ᵬᙢ☢Ḅp/=3xl()3pa21.ூ᪆௃ூ௃ᫀ9⚓ᐳ17⚓

19✌ᐜᐭ!"#$ᐝ$&'()ᐭ*ᴻẈᢚᐝ$ᔣ#$/ᢚᢚ012ᐭ03!"4ᩩᢚᐝ$6ᢚᐝ$&*ᴻẈᐭ'(7ᵫ2ᐝ$9ᵫᙊ;஺"=>?@ᢚ☢ABCDᐭᜐḄᑗ$ᚖHI?Jᢚᐝ$ḄKLMᔣNO᝞QᡠSTூ᪆௃ூ௃UVVWXYZ[\Ḅ]Y!ᵨXYḄMᔣ9_Hᔣ`Ḅ&UVVḄX;஺a4ᩩbcᜮḄ_Hᔣ`Ḅᨵᔣ$fᵨG⊤S&UVVḄX;஺a4ᩩbcᜮḄ_HᔣhḄᨵᔣ$fᵨ`⊤S᝞QᡠSTi'GN23.—EZF-k+mᵯok-mூ᪆௃ூ௃ᫀ10⚓ᐳ17⚓

20ᵫQqrᩩstuḄvwN᩽tu᜜{Ḅt|$ḄMᔣ9&tuḄN᩽"}>᜜{'~ᑮS᩽ᡠ$ḄwS᩽vwN᩽6᪷3ᑣqᵯ&$Ḅwᐭvw"ᡠᵯoḄwA᩽vw᩽᝞QᡠST(+)ᵯoL)24.73.4247.52.25ூ᪆௃ூ௃Q1Ḅᨬ191¡ᙠ£$hMIDḄSᦪ97࠷஺ফᵫQ2qr§¨©YḄᑖ90.2N,ᡠSᦪ3.4N஺[3]Q3ᙠ¯⊤Ḅ7~⊤°hImin7~ᨵµ@1¶ᡠ4@1¶·⊤0.5min,ᢣ┐ᙠ“4”Z“5”»~/ᔣ“4”4¼6ᙠ¯⊤Ḅᜧ⊤°h1s»~ᨵ10@1¶ᡠ4@1¶·⊤0.1s,ᡠ¯┐ᢣSḄ~7.5s,ᓽ¯⊤ḄÀᦪ4min7.5s=247.5s[4]ᙠQ47Âh1cm»~ᨵ10@1¶ᡠ4@1¶·⊤1mm,ᓽÂḄᑖ1mm6Ä©ᱥu¼C4.00cmÆv¼C6.25cmÆᡠÄ©ᱥuḄÈJ=6.25cm-4.00cm=2.25cm25.981212Ìூ᪆௃ூ௃(1)ᵫQÍrÎᢝ98࠷NOᡠḄÐ98࠷64@᪗Òᜧ(`ḄÐ100࠷,(ÓÔḄÐÓÔᡠ☢hMḄ(124@᪗Òᜧ(஺(2)[3]ᵫQÍqrÕ6ḄÖZ×ØÙÚÛÜᑮÐÝᵨÈÞIqß96Ḅàáᜧ஺(3)[4]ᙠÐÝâãäå{æ{ᑖçᓄé(sᡂ(ëᑈ"(ëᙠhᓣî7(ë7Ḅé(⍗ðᓄñòᙠhᓣî7(ëO1IQó9ÐÝâḄôᫀII⚓ᐳ17⚓

21sᙠÐÝõöᑮÐᙠᔜ@{øÙçᓄIᜧá(ëùᙠhᓣî7⌲ûᑮ⊡ᐙÛ»Óþ☢uḄÓ1I(ëùÓOÓᜧIQÌ9ÐÝḄôs஺26.47.8401.195x10’/ᜧÿ᪆1.1x10,ூ᪆௃ூ௃1ঝᵫᵬḄm/=50g+10g+1.8g=61.8gḄm2=14g,Ḅm=mi-m2=61.8g-l4g=47.8gঞ[2]Ḅᑖ!lcm\Ḅ"V=40mL=40cm3[3]Ḅ#p=-==1.195g/cm3=1.195x1O,kg/m3V40cm
2[4][5]ᜧ%&'(ᑁḄᐰ+᎔ᐭᑁ./0ḄḄ"12ᵫ#0341ᜧ஺
3[6J᝞“8ᧇᔾ;<=ᙠ?᪷A=BᩩDEFGHIᳮKG=Fi=p^gV^=pᩈgSH᝞S8ᧇᔾ;<=ᙠ᪷A=BᩩDEFGHIᳮKG=F2=pMgKit=pgShᡠOPgSH=pgShPᫀR12⚓ᐳ17⚓

222BVᔠXᐵSஹS2,]XXᐵSi“_"a"_)ᦈூ᪆௃ூ௃(1)efᵫ⚪h2ijḄ_kᵯmUo2.5V,2ijstuᐝwḄᵯxy&=10஺ᦑᵫ~kK2ijstuᐝw2ijḄᵯyᦑᵯ⊤⌱ᵨ2xᘤḄᱏᔣwijᨩᑣᵯḄᵯ2ᵫ~kKxᘤᐭᵯḄx!ᜧᦑxᘤᐭᵯ᝞ᡠ(2)2fᵯᵯwXᐵ]X஺(3)3fᵫ2ij¡ᵯm1/o2.5Vw2ijḄᵯ/᪹0.25A,ᦑᵫ¥=“K2ijḄ_k¦᳛PU.I¨2.5VxO.25A=0.625Wভ®¯°±2²u³ᵯm⊤ᵯ⊤´st1µ¶²ᵯ·¸᝱ºij¡ᵯm&»¼ijᓾ&¾I¿·ijḄᵯ2./iḄ°▭¦᳛2஺(4)5fᵫ⚪h2ijstuᐝwxᘤ¡ḄᵯmUÂU-U¨6V-2.5V=3.5VÄwᵯḄᵯ/᪹0.25A,ᦑᵫ~kKÄwxᘤᐭᵯḄx!Å/0.25AaxᘤḄᨬᜧx!ᜧÈÉÈ14Q,ᦑË°±⌱ᵨḄxᘤḄÌÍB஺(5)ঝযᵫᵯᙠÏᨵᵯ⊤ḄÑÒOᑭᵨk!ᵯxᵯm⊤ÔÕᵯPᫀR13⚓ᐳ17⚓

23⊤×ijØὶ✌ᐜÜij¡ᵯmÉÈ_kᵯmᯠÞ0ßÄwk!ᵯx¡Ḅᵯmà¼áâß2ijstãäwḄᵯᜧ2᪷AP=u/áâßijḄ_k¦᳛ᦑᵫåæজKåæঝḄ°±èäéᢝxᘤᱏëì&VᔠXᐵSஹS2,]XXᐵS”íßᵯm⊤ḄᦪU஺ঞïᙠজᵯm⊤0ij¡ᵯmᙠঝᵯm⊤0ij×k!ᵯx¡ᵯmᵫØὶᵯḄᵯmᱯñ~kKijḄᵯ/ᓝó=2&&ᵫô=஻KijḄ_k¦᳛…5*28.(1)20Nö(2)24000Jூ᪆௃ூ௃é(1)60kgḄᜧ%÷øùḼ40kgḄᵯûüýþÿG=mg=(60kg+40kg)x10N/kg=1000N
ᵯᡠḄ/=—G=—xl000N=20N5050(2)ᵯḼ☢ᒴᜐ⊝᝱ᱫ!Ḅᜧ#$ᜧ#ᓽF=^20Nᑣᵯᒴ1200mᱫ!'Ḅ(W=Fs=1200mx20N=24000J)*(1)
ᵯᡠḄ20N+(2)ᵯᒴ1200mᱫ!'Ḅ(24000J஺29.(1)20Q+(2)72J+(3)4936ூ᪆௃ூ௃-*(1)./ᔠ1ᐵS2ஹS345ᱏP78B9ᵯ.ᨵᵯR/;<=4ᵯ>⊤Ḅ)ᫀA14⚓ᐳ17⚓

24Eᦪ0.3A,᪷M/=gQ5RᘤR/ḄᨬᜧVRW2YZᢝ5ᱏ\]^R/ᔠ1ᐵ5ஹS2ஹS34aVᵯ&c5RᘤR/Ḅᨬᜧᵯdὶᵯ>⊤fghᵯ>ᵯ>⊤Eᦪ0.5A,=4i5RᘤḄᵯ>j0.3A,᪷Mdὶᵯᵯ>ḄklQiaVᵯR2Ḅᵯ>2=/7=0.5A-0.3A=0.2A1minᑁ&rὑḄᵯtW=W/=6Vx0.2Ax60s=72JW3Y./ᔠ1ᐵS2,#|}c5Rᘤ~ὶ#|}Ḅᨬᜧᵯ(᳛a(᳛0.5W,᪷MP=UIQ#|}ᐝ4Ḅᵯ>%=0.5W=0.25A2V᪷Mal/=#|}ḄᵯA5RᘤḄᵯᨬᜧ4ᵯḄᵯ>ᨬ##|}Ḅ▭(᳛ᨬ#=4ᵯḄᵯ>,U6V3./#=------=-------——AJR+R8Q+20c14L2#|}LrὑḄᨬ#(᳛kᶭ&=J?#|}LrὑḄᨬᜧ(᳛ᨬ#(᳛P._0.5W_49ᓛT49)*W1Y5RᘤR/ḄᨬᜧV300W2Y/ᔠ1ᐵSiஹS2ஹS3,5ᱏPᙠB94Iminᑁᵯ>iaVᵯR2£¤Ḅ¥g72J+W3Y./ᔠ1ᐵS2,ᙠZ¦ᵯ§ᐰḄ©ª«#|}LrὑḄᨬᜧ(᳛ᨬ#(᳛)ᫀA15⚓ᐳ17⚓

2549*36஺30.(1)6N+(2)10N+(3)800PaᡈlOOOPaூ-᪆௃ூµ-௃-*(1)ᵫ·¸Q஻o=Ocm4»¼ᘤḄEᦪ½o=6N,ᵫ¾ᩚḄÀg^ὃ⇋QÃÄAÅ»¼ᘤḄÆ$ÇḄÈᓽÃÄAḄÈG=Fo=6N(2)ᵫ·¸Q2=3cm4ᱥÄAḄ«⊤☢ាÍÎ☢ÏÐÑᘤᑁÎḄÒÓ/z/=13cm4ÃÄAÕÍÖ×ᑣÃÄAḄØÙL-h1-13cm-3cm=10cm=0.1mÚᱥÄÖ×4᣸1ÜÄḄÄÝcÇḄÄÝÞ$ᡠß=4ÃÄA᣸1ÎḄÄÝV^=Z,3=(0.1m)3=10-3m3ÃÄAᑮḄã½,hᙠägVl.Ox103kg/m3x1ON/kgx10-3m3=1ON(3)ÑᘤᑁÎḄÒÓ//3=4cm4ÃÄAÖᐭÎḄÒÓh2=஻3-஻2=4cm-3cm=lcm=0.01m᣸1ÎḄÄÝVf^=Lrh^2=(0.1m)2x0.01m=10-4m3ÃÄAᑮḄãF/=pägV὏'=1.Ox1(Pkg/rrPx1ON/kgx104m3=1N»¼ᘤḄEᦪF=G-Fã'=6N-1N=5NêëᔣÑᘤíÎᑖ»¼ᘤᑮḄïᡈÆðñòóôõ»¼ᘤḄEᦪᜧ#R0.2F4*ᵫ·¸QAñòó*»¼ᘤᑮḄïF=0.2F=0.2x5N=lNöÎḄÒÓ÷ᜧ4=4ÃÄAᑮøᔣùḄãcøᔣ«Èஹ¾ᩚḄï<ᵨᜐ⊝᝱ᡠßᵫÃÄᑮḄᔠûᑮḄãF/=G+F,=6N+1N=7N/ᵫ)ᫀA16⚓ᐳ17⚓

26F(p^gV)pgSAh*=4ÃÄÖᐭÎḄÒÓ7Nü=——-——=-----T--------------------------------=007m=7cm7P^gSஹ1.0x10kg/mxION/kgx
0.1m~ᑣ=4ÑᘤᑁÎḄÒÓh4=h2+h᰿3=3cm+7cm=10cm=0.1mᑣ=4ÎÅÑᘤþḄÆÿp=p,g!u=1.0x103kg/m3x1ON/kgxO.1m=1OOOPa
ᘤᑮḄF=0.2F=0.2x5N=lNḄAᑮᔣḄ!ᔣ"#ஹ%ᩚḄ'ᵨᜐ*+⊝-᝱ᡠ0ᵫᑮḄᔠ345ᑮḄF/'=G-F=6N-1N=5N/ᵫF(PagV-.gSnh6f457ᐭ9ḄpfffSN:4=——=---------5-------r-----------------------=0.05tn=5cm;p,/41.0x103kg/m3x1ON/kgx
0.1m27ᑣ>ᘤᑁḄ஻5=஻2+஻᰿4=3cm+5cm=8cm=0.08mᑣB>ᘤCḄDp'=pEg/75=l.Ox103kg/m3x1ON/kgxO.O8m=800PaFG1ᱥAᡠᑮḄ#6NIG2>ᘤᑁḄ13cmAᑮḄ10NIG3>ᘤᑁḄ4cmᘤḄJᦪᜧF,MNᔣ>ᘤ9OᘤḄJᦪᜧP0.2FB>ᘤCḄD800PaᡈlOOOPa஺Fᫀ
17⚓ᐳ17⚓