人教版初中物理知识点总结归纳(特详细)

11.23340/4vt21S5(1):(2):6(1)(2)(3)720Hz20000Hz20000Hz20Hz8B91.2.3421.23108/3108/3456(1)(2)3(4)7(1)(2)812:u2ffu2fuf334uvfu2ffv2fu=2fv=2ffu2fv2f5(1)(u2f)(fv2f)(2)(fu2f),(v2f)4(3)uf,6vvF7(1).(2)(3)(4)()(5)(6)(7)5(8)891011121.,2.():1010001001001(1)(2)(3)35420.14.(1)(2)(3)(4)5.66.7..8.9.10.11.(12.ADABBCCDDGDEEFFG13.14.15.()16.(1)(2)(3)717.18.19.1.2.3.4.5.6.7.(1)(2)(3)8.9.10.11()12I(A)(mA)(A)1=103=10613+-81400.60.02030.11(U):2U(V)(KV)(mV)(V)1=103=106=1093+-4030.10150.5511.512220363806(R)()7(R)()(M)(K)1=1031=10389()(1)502A9502AABC(2)10112201213141512I=U/RI(A)U(V)R()1=1/3IURIUR4,R=U/II=U/RU=IR5R1R210I=I1=I2U=U1+U2R=R1+R2nR=nRI1I2=116R1R2I=I1+I2U=U1=U2n1/R=1/R1+1/R2I1I2=1/R11/R2U1U2=111W21=1=3.610634W=UItW(J)U(V)I(A)t5W=UItW.U.It6.W=I2RtW=PtW=UQQ7.P()8.UWPtP(w)WtUVIA9WtP11WtP10P=I2RP=U2/R11U012P013U14PUU0PP0UU0PP0U=U0P=P01/4220V100W220100110251516Q=I2RtQI(A)R()t17()()W=QQ123NS4512678910(1112N13(N)141516171819.20.21.22.1323.24.25.26.2728123456Am.Ts.fHz.m.7vTfv89X141011121123234.5.18971919193219616.7.8.1509.()1510.()1(m)11:1=103=106=10912,,1314(1)(2)(3)(4)15(1)(2)(3)16.mV/3(/3)1/3=1000/3mV31718=1.0103/319(1)mV(2)m=V(3)2012m10.7531=1000=1031=0.1=10-1161=0.01=10-21=0.001=10-31=1061=10-64(1).(2).(3).(4).56(1).(2):(a)(b)(3)(a)(b)?(c)(4):7.8.().9.10.11.12.s=vt17//1/=3.6/13.14.;15.16.1718()1920()N1212223(1)(2)(3)(4)62425(1)(2)(3)261827.G=mggg=9.8/g=10/2829303132(1)(2)(3)(4)53334()35363712()1934()N1567(1)(2)(3)(4)689(1)(2)(3)1011.G=mggg=9.8/g=10/1213141516(1)(2)20(3)(4)51718(1)(o)(2)(F1)(3)(F2)(4)L1(5)L219:=.F1L1=F2L220(1)L1L2,F1F2(2)L1L2,F1F2(3)L1=L2,F1=F22122,.()23,,123P=F/Sp1=1/2FS24:(1)SF;(2)FS(3)FS2156(1)(2)(3)(4)7*/3g=9.8/h89101112137601=760=1.013105=10.341415.1617(1)FG(2)FG(3)F=G(1)FG(2)FG(3)F=G22181920VFg21(1)F=GF(GF)(2)F=F-F(3)(4)F=G()22(1)(2)(3)12(W)(F)(s)=3.W=FsWFs(1=1).45FL=Gh623P/W=7(P)(t)(W)PWt1=1/1=10008910111213141516=+17.181234562478Q9c11011/()12C=4.2103/()14.210313Q=cm(t-t0)=cmtQc/()mt0tQ=cm(t0-t)=cmt14q1/15Q=qmQq/m16171221819251.2345678=100.262009---tsvvtsvstG=mgF=F1+F2[]F=F1-F2[]VmF=GFF=G=mgvm/skm/hsmkmtshGNmkggg=9.8N/kgg=10N/kgkg/m3g/cm3mkggVm3cm31kg=103g1g/cm3=1103kg/m31m3=106cm31L=1dm31mL=1cm3FNGNFNFNkg/m3Vm3g=9.8N/kgg=10N/kg1m==10dm=102cm=103mm1h=60min=3600s1min=60sGNmkg27F=gVF=Gp=SFp=ghp1=p22211SFSF2121SSFFF1L1=F2L21221LLFFF=n1Gs=nhpPaN/m2kg/m3hmg=9.8N/kgg=10N/kg1cm2=10--4m21mm2=10--6m2SL1L2pPaN/m2FNSm2FNGNF1NL1mF2NL2mFNGNG=nsmhmn[]28n=1F=Gs=hn=2F=21Gs=2hW=FsP=t=cmtt0Q=mqQJcJ/(kg)mkgtQJmkgqJ/kgQ=VqWJFNsmPWWJts1W=1J/s1=735W1kW=103W1MW=106WWJWJ1W=Gh[]W=Fs[]W=Pt[]W=Ght2t1t=t2-t1t2t1t=t1-t229tQIRUIW=UItW=UItUIRW=I2RtW=UItIU/RW=RU2tQ=WP=W/tP=IUIAQCtsIAUVR1sWJUVIAts(1)IUt(2)1=1kWh=3.6106J(3)PWkWWJkWhtshPWIAUVP=RU2P=I2RIURIUR30I=I1=I2U=U1+U22121RRUU2121RRPPt2RQI=I1+I21221RRIIU=U1=U21221RRPPt2RQ