2022-2023学年山东省泰安市东平县九年级上册期末物理试题（含解析）

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2022-2023
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19ூᑖ᪆௃ூFG௃A.aᱥIᜐ8KLM᝱OᑮḄLQ78RSTQᓽ/=GaᑣᱥIaKL/<ᓃᦑYZ>26ᱥIᜐ8[LM᝱OᑮḄLQ78RSTQᓽὡ]b=Gbᑣ஺^g/b=AgKᱥIbKL/b=%,ᦑ0_=2ᡠa2

20B.ᙠQḄᵨ᫡ᔣ&ᓽ☢j-ᵯᜧ⁐☢jᜧᵯ-ᦑB;<ᔠ⚪C./Ḅᵯᜧ8ḄᵯᵯḄᵯ&fg᪷¡Ḅᵯᜧ8¢ḄᵯᦑC┯ᔠ⚪bD.᪷£¤¥¦QwR2ᵯḄ64§ᜧ¨©ªwḄ4Ḅ64§ᜧᡠaḄ«&Ḅ§¬¨©/OᑮḄQ§ᜧᦑD;<ᔠ⚪஺ᦑ⌱C஺17.DூFG௃I®A.ᵫR¯ᵬḄᵯ44bb5V=20஺0.25AᵬḄᵯ4±ᢝ20஺ᦑA┯B.ᵫ³Ḅᵯ&1ᵯᡂ;3᪷£¤¥¦³Ḅᵯᙠᓄ¥4ᵯᦑB┯C.ᵬஹ³]ὶᙠᵯᵫ¶ᵯᵯ&¡0.25A·UUz=5Vᵫ]ὶᵯḄᵯᐵ¹¯ᵯᵯU=UUz=5V+5V=10VᦑC┯D.ᵬஹ³ὶᙠᵯ¶ᵯᵯ¡2V·ᵫ0.1A,//=0.2A᪷ὶᵯ)ᵯ&78ᔜºᵯ&5w¯)ᵯ&1=161/=0.1A+0.2A=0.3AᦑD;<஺ᦑ⌱Do18.A?ᫀA7⚓ᐳ19⚓

21ூFG௃জ¼½“QḄᵨᦔÀ1ÁÂÃÄᨵᐵ”·◀ÈᵨᑮÉᑴËÌÍÎÏÐᛛᧇÓ◍q%ÕÖQḄᵨᦔÀᵨᑮÈ×ᣚÌᦑজᔠ⚪ঝ᥅ÛQḄᜧ-1Qᜧ-wÜÝ☢ḄÞß%ᨵᐵ1OQ☢jàᐵᡠa¼½“᥅ÛQ1QḄᐵ¹”·ÖÉᑴÜÝ☢ḄÞß%fgᦋQᦑঝᔠ⚪ஹ;ঞᱥIãḄᜧ-1ᱥIḄäËwå%ᨵᐵ¼½“ᱥIã1å%Ḅᐵ¹”·ÖÉᑴæᳫḄäËfgèæᳫéᙠê☢Ḅgë%ᵫ☟íîaᦋå%ᦑঞᔠ⚪u_টᙠ“¼½ðñÌ(ᵯ”·òóᦋô(ᵯᵯwḄᵯ&ᑭᵨ1¯ᑮò÷ᵯ4øùzᙳ4¡Èû-6ᦑটᔠ⚪஺ᡠa;<Ḅঞট஺ᦑ⌱A»19.CூFG௃জüḄSIᨵýòᩨᩚ
᝞Ḅஹᜧஹஹᢣஹᡂᩨᩚᦑজᔠ⚪ঝḄ!"#ᜧ$%&☢Ḅ()*+,-#ᜧ$.ᱥ01Ḅ᥅3ᦑঝ4ᔠ⚪5ঞ7ᔾ9:;<Ḅ᡽>.ᦈ@ᑭᵨ$ᜧCDEḄᵨᦑঞᔠ⚪টGHḄIᱛ"9:KLM☢Nᩭ#ᜧDEḄᦑট4ᔠ⚪஺ᦑ⌱Co20.DூST௃ঝᵫᵯXYZ[ᔠ\ᐵᵯD⊤_ὶᙠᵯXbcᵯdḄᵯDᓽᵯdḄᵯDfU,ᵯXbḄᵯgfhijklᵯmR%ᐭo1p[ᔠ\ᐵqᵯm_ὶᵯD⊤cᵯmRqrᵯDᑣUR=0.4U,tuvᵯXbḄᵯg4fhᡠᵯXbḄᵯgxᜧᓽ9yᫀ{8⚓ᐳ19⚓

22:ᡡḄᵯgxᜧᦑঝ┯ঞt_ὶᵯXbᵯDᔜᑖᵯDᡠaqrḄᵯDᵫhxf4fhᐸqrḄᵯDxᜧᦑঞ5জuvᡡqrḄᵯDU=U-U=U-O.4U=0.6UoKRqrᵯD
UR:=0.4U:0.67=2:3ᦑজ┯টt_ὶᵯXbᔜᜐḄᵯgᡠᵫ==l443Iᦑট஺ᡠঞটDᔠ⚪஺ᦑ⌱D஺21.AூST௃জᵫYZᙠ{2s{21s
ᑁᱥ0AᒴᓣᵫY¢Z{2sᑁḄ£MF=20N,ᵫYᵬZ¥¦Ḅᨵᦔ©ᦪ஻=2,¬ᶍ¥®ஹ᥅3ஹ¯CmMᵨᙠ¥¦°ᵫrḄ£Mf±.GA+G³2³´µ®MG^2F-G=2x20N-25N=15N/fᦑজ5ঝᵫYZ{2sᑁᱥ0AᓣḄ+ᓃ=2m/s,ᑣ³´µᓣḄ+v^=vj=2m/sᵫ+·¸¹³´µᓣḄº+h=v³l=2m/sxls=2myᫀ{9⚓ᐳ19⚓

23ᑣ{2»ᑁ¼½´µ®¾Ḅ¿᜜Á஻᪹G³M=15Nx2m=30Jᦑঝ┯ঞÃZ¥¦BCÄÅLḄᨬᜧ£MᑖÇf200N100N,ᓽF=200N,Fc=100Nfi¬ᶍ¥®ஹ᥅3ஹ¯CmMCᜐ¥¦£MᑣiCᜐᨬᜧ£Mf100NvBᜐ¥¦£MFB=2FC-Gᢚ2x1OON-15N=185NiBᜐᨬᜧ£Mf200NvCᜐ¥¦£MᐰÊËÌx=1O7.5Nc22ᜧ¥¦CÄÅLḄᨬᜧ£M100Nᡠ⌕Cᜐᨬᜧ£MfÎuv8ᜐḄ£MF8=G*+G=185NᑣuÏÐᨬÑÄᒴÒÓÔᱥḄ®MG=/VGÕ185N-25N=160NᦑঞটuÏÐᓣ®ᱥḄÖ×ᦔ᳛Ùᓣᱥ®Ḅ#ᜧ-#ᜧ¬ᶍ¥®ஹ᥅3ஹ¯CmMuÏÐᓣ®ᱥḄᨬᜧÖ×ᦔ᳛ÚGhGhG160Neno/ÛÊÜᜧᡎ2h2F2xlOONᦑট஺ᔠᑖ᪆ZAᔠ⚪BCD4ᔠ⚪஺ᦑ⌱A஺22.DூST௃ᵫYᵬZßàᳫḄ®MG=5N,ᑣᳫḄâãg10N/kgᳫḄâãf0.5kgᵫY¢ZäåcMæḄçᦪfB=4N,᪷éê®ëZᳫᙠìbLᑮḄîMyᫀ{10⚓ᐳ19⚓

24=G-ὡ=5N-4N=1NᳫᙠìbLᑮḄîMf1Nᵫᳫᜐö÷ø᝱ᑣ᪷éúûüýþᳮ
ᳫḄ"ᯖ=1.0x10%xlON/kgᳫḄ1x104m3ᵫ!"ᳫḄm0.5kgp=—=5x]O'kg/m'VIxlO"m3ᳫḄ5xl03kg/m3ᵫ()"*+,-Ḅ.ᦪB=3N,᪷3456"ᳫᙠ89:ᑮḄ<%=G-?=5N-3N=2Nᳫᙠ89:ᑮḄ<2NAᵫBᳫᜐBDEF᝱ᑣ᪷3IJKLMᳮ
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5N=5xl03kg/mJlON/kgxlxlO^m38Ḅᨬᜧ5xlO3kg/m3Z[ᡠ\ᳫḄ5xl(Pkg/m3,_8Ḅ2xlO3kg/m3,_-Ḅᨬᜧ,`a5xlO3kg/m3ᦑজঝefᔠ⚪iঞটfᔠ⚪i•ᦑ⌱D஺23.pq⌴ூᑖ᪆௃ூwx௃yz{|y}Ḅ“”᜜☢ᨵ“ᝅ”y}TḄᓣᑁᜧ,|{ᔾpḄ|pq⌴!ᦋḄᑁ஺ᫀ11⚓ᐳ19⚓

2524.{¤ூwx௃R¥ᧇᙠ¥§T¨©ªḄ¥ᐸᑁ¬Ḅᓄ®¯ᓄᑁ°±ᑭᵨªḄ¥´µ¶·ᓽ¹ᑁ¯ᓄµ¶Ḅ{¤஺25.5A3IA1ூwx௃ᵫºὶᵯ½ḄᑖªMᳮ"Aᙠºὶᵯ½9ᔜᑖᑮḄᵯª¿ÀÁBᵯ¿À஺ᡠÃÄÅ&Ḅᵯ¿ÀÇ=ÈÉRU522ÊᵯÂËὶ±ÌÍÊÎᵯªÏÁᦑÄஹÑÊÎḄᵯª¿ÀU12᪷3ÒÓÔÕ
ÃஹÖ9Ḅᵯ׿ÀU/_&UR_-2_5[ÚÛ==326.9x1053x103ூᑖ᪆௃ூwx௃[1]Ý}{ḄÞ᳛P=90kW=9x]04WÝ}{ᡠáḄÞPK=P/=9xl04Wxl0s=9xl05J[2]ᵫ(?"Ý}äᢝᒴçèé·Ḅçv=30m/s,ᵫ©=ëP—tt=Fv
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nopmᣚᵨstᦪ_ḄvṹxᦋIvṹᙠᩨᩚ4ḄZ[z{no|}p~ᦪᑖ᪆<=>?ḄᏔᯠឋCDEFGH஺(5)5
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28ᑮ²Ḅᜧ$᣸Ḅᨵᐵ஺(2)[2]ᑖ᪆cஹd¿mnoᱥ¤ᙠḄ³ÀtËstᵫÂzÃ^²ᱥ°ᑮḄ²ÀtᦑCD¤¥ᙠᙠ&Ḅᱥ°ᑮ²Ḅᜧ$¤¥Ëᐵ஺(3)[3]ᑖ᪆cஹe¿mnoᱥ᣸ḄÀtḄstᵫÂzÃ^²ᱥ°ᑮḄ²sÀtᦑᑖ᪆cஹe¿mnoCD¤ᙠ&Ḅᱥ°ᑮ²Ḅᜧ$Ḅᨵᐵ஺(4)[4]`ᐜÐᡂnoc,lÐᡂnoa,*ᱥ4ÔᨵYᦑ^_DḄzᜧ᪷ÂzÃ^²ᑣ^CḄ²ᜧ஺(5)জ×زᙠY¡ᑁᵨ¦§^CY☢Ḅ©-Ù%ঝᙽᙠᑁᵨ¦§^CY☢Ḅ©-%ᙠজ&×ᜐQزR᝱°ᑮḄ²ÚQᐸz×᪗Gᙠঝ&ᜐQزR᝱°ᑮḄ²ÚQ×ḄzᙽḄzݳÞᱥßà+G¿âÀãCäåḄ²-MçèG᪷éêëeᳮᨵMçmYì'=PgA"SY¡ñ᜛g(h-h)S2}ᓽMóô48(%4)5Y¡÷6gᦑàᙽḄù_-m஺(42-4)SY¡mp=ঞ[5]-CDᙽḄ᪷V,üDᙽḄᓽ஺ᙠঝḄẠ4ᙽ&D᠒᠒ᐭY¡ᑁḄY&Xᐸ¤¥ᙠ&ᵨ¦§^CY☢Ḅ©-4,ᑣᙽḄ-6ᫀ815⚓ᐳ19⚓

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30(5)[7]ᵫ9R⍝ᵯ+,-⁚ᵯ/ᵯ+ᵯ$,3V,᪷d⊤Vᦪd-Uᵯ$ᨬ,0.5V,<=>ᘤᐭᵯḄ>gᨬᜧ-Uᵯ$,U=3JS,=3VLJ0.5V=2.5VᵯVḄᵯA,0.1A,<=>ᘤḄ>g,="=1^=25஺I0.1A32.(1)1.8xlO5Pa(2)7kgூᑖ᪆௃ூ!௃!;(1)ᵫ⚪R5,m=1.8t=1.8xlO3kgᙢ☢¡ᑮḄ$¢ᜧ£*¤¢£=G=1.8X10'N$¥=/8*_8x10,SlOOOxlO^m2(2)ᨵᵨ¦ᓃ©Qs=644Nxl00xl03m=6.44xl07Jfl/ᱏ”ᵫ±l²=³=9µ¶·=3.22x10",y஻20%ᓽ0º=»=3.22xIO'Joᫀq17⚓ᐳ19⚓

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