2023年河南省许昌市中考模拟物理试卷（附答案）

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16Ml(i)[i]å¸2æçḄÒèéᳮQ(2)[2]ᙠåë¡◤⌕åÂí±îḄëï¤í±Ḅðᑖî᎔ᐭëóåÂðᑖîḄ2ôåÂí±ᒕöîḄëᡠ\åë÷øBBCA஺(3)[3]ᵫ`᪗úḄᑖçûB0.2g,ᵫ`ᵬí±ᒕöîḄë஻஻=20g+10g+5g+2.4g=37.4gᵫ`í±îḄë"?2=50g+20g+10g+2.4g=82.4gᡠ\ëóîḄëü=஻22-m/=82.4g-37.4g=45g[4]ᵫ`ýëóḄᑖçûB2mL,ëóîḄ2ôBV=40mL=40cm3[5]îḄæçBm45sP--=—=1125g/cm3=1.125x103kg/m3V40cm(4)[61þᩈᙽḄÿ☢
S,ᩈᙽᙠᵨᡠᡠPgS(LL)=p.gSkL-L)AabᵨḄ19.B0.20.76%◤⌕ᙠᵯḄ!᳛ᵯ$ூ'᪆௃ூ*'௃(DU]+Ḅ,-ᵯ.3.8V,ᡠᵯ⊤⌱ᵨᜧ23456ὶ89:ᘤḄᨬᜧᵯ:=ᫀ?8⚓ᐳ11⚓

17BᐭᵯD5ᵯ$⊤Eὶ+FGLḄ,-ᵯ3.8V,,-!᳛FN1W,ᵫP=U/V⍝GḄ,-ᵯ$X.(2)[2]A.+.ᵯ$⊤59:ᘤ.Eὶ_ᵯ$⊤ᑁabDcᑣ᦮fᵯDbDg⊤hᨵjᦪᦑAmᔠ⚪pqB._GḄsbcᑣtuᵯ$⊤vhᨵjᦪwxᵯ⊤EὶᙠᵯDᵯ⊤yᵯzᵯᡠtᨵjᦪᦑBmᔠ⚪pqC._|ᑁa}~cDᑣᵯ⊤hᨵjᦪᵯ$⊤ᨵjᦪᦑCmᔠ⚪pqD._9:ᘤḄᵯ:bcᑣ᦮fᵯDbDg⊤hᨵjᦪᦑDmᔠ⚪p஺ᦑ⌱Bo(3)[3][4]ᵫV⍝GᐝxᵫNᵯ$⊤⌱ᵨF23ᑖ0.02A,ᵯ$.0.2A,ᡠFGḄ,-!᳛.P=W=3.8Vx0.2A=0.76W(4)মy}FGḄ,-!᳛yᜧNFG,-!᳛Ḅ▭!᳛⌕ᜧᵯF9:ᘤḄᵯᵫᑖᳮV⍝89:ᘤḄᱏᔣ%¢஺(5)য¥+ᙠᵯḄ!᳛ᡠ◤⌕¦§y2¨©ᙳ஺(6)[8]ᵫ6ὶᵯDᵯ$Ḅ«¬V⍝ᵯ$⊤jᦪN®¯Ḅᵯ$5®¯ᵯ⊤ᵯ$°ᡠ±ᵯDᡠyᵯ$²ᜧ³´Fµᵯ!᳛²ᜧḄ஺20.(1)1.76xlO4Nq(2)2.2xlO3Nq(3)2.5hூ'᪆௃ூ*'௃=ᫀ?9⚓ᐳ11⚓

18'»¼1½¾ÀÁx16ÂḄÃÄ2m=mᶇmx=800kg+60kgx16=1760kgÀᦟxÂஹ¾16ÂḄÃÊËG=mg=1760kgx10N/kg=1.76x1Ì+Íᐝ‷ᡠÍᐝ‷ÏᑮḄËÃÊË.ÑÒ©⊝ËᡠÍᐝ‷ÀÁÔÕxᡠÏË᪹G=1.76x1¼HN¼2½᪷ÚÛV¾ÏᑮḄᱫ³Ë2.2X104W=2.2xlO5NV10m/s¾ᒴàáâᡠ:Ëᱫ³Ë.ÑÒ©⊝ËᜧFãᡠ:ËᜧF>F=2.2xlO3N¼3½ᨬᜧæàæá30min,ᵯéê}ë2£=W=P/=2.2X104WX30X60S=3.96X107Jᵫᐙᵯ᫕⊡ᐙᐭ¾ᵯïḄᵯëE=W=U/tÛVðὑḄᵯëᵨ220Vஹ20AḄᐙᵯ᫕ò-ᐙᵯḄxóW3.96xlO7J=9000s=2.5hUI4400W=»প¾ÀÁxᡠÏᑮḄË.1.76X1Q4Nq¼2½¾ÏᑮḄ©ᙳ:Ë.2.2X103Nq¼3½ᐙᵯ᫕ò-ᐙᵯ2.5hᩭ⊡ù஺21.úûbü145200J1.68xlO5Jூ'᪆௃ூ*'௃¼1½ᵯDýþxᐳᨵÿ
᝱S”1,Sbᵯᵨ&ᐭᵯᵯὶᵯᵯᨬᜧSa2,SbR2ᐭᵯ#$S,2,Sb%ᫀ'10⚓ᐳ11⚓

19஻2+ᔠQ.ᐭᵯᵯ/ὶᵯᵯᨬ0ᵫP=—34ᵯRᵯ5ᜧ6᳛80ᦑSa1,Sb:#$
᝱S”2,Sb:ᦻ<=>S,2,Sb+ᔠ:?<=>஺(2)[3]ᵫA34ᦻ<⃓C▤EḄG:/=36min-14min=22min=l320sᦻ<⃓CHGIJKLὑḄᵯN:U2(220V)2W.=Pt=—t=-------Lx1320s=145200J1R440c2(3)[4]ᵫA334,?<=>QRJSḄ$TU18࠷ᓣ?ᑮ98࠷,ᑣ0.5kgJSᡠᔾᦈḄ>\Qᔾ=cm(f-t0)=4.2x103J/kgrx0.5kgx(98࠷-18࠷)=1.68x103J%ᫀ'11⚓ᐳII⚓