物理知识结构汇总.docVIP

??×?μ?3￡á?? 1￡?1a￡¨μ?′?2¨￡??ú?????D′?2￥μ?×??ì￡?c=3?á105Km/s=3?á108m?/s?￡1a?ú???üí??÷???ê?D′?2￥±è?ú?????D′?2￥??òa?y? 2￡?15??μ??????Déù?ù￡o340m￡ˉs￡????ˉ·￠éù?￡?éùò?′?2￥Dèòa?é?ê￡?éùò??ú?????D2??ü′?2￥?￡ò?°?éùò??ú1ìì??D′?2￥×??ì￡?òoì??D′???￡???ì??D×??y?￡? 3￡???μ??ü?è￡o1￡?0?á103Kg￡ˉm3=1g￡ˉcm3=1￡?0Kg￡ˉdm3?￡? 1??±ê×?′ó???1??μ???μ?·Dμ?￡o100??￡?±ùμ?è?μ?O??￡?? ??μ?±èèèèY4￡?2?á103J￡ˉ(Kg?¤??)?￡? 4￡?g=9￡?8N/Kg￡?ì?êa?μ?÷ê±?éè?10?N/Kg? 5￡?ò???±ê×?′ó???1=76cmHg==760mmHg=1￡?01?á105Pa=10.3m?????ù?￡? 6￡?????μ??1?μ￡o1?ú?éμ?3?1.5V￡?ò????|D?μ?3?2V?￡????÷μ??·μ??1220V￡?°2è?μ??12???óú36V?￡? 7￡?1?è=1?§í??¤ê±￡¨kwh￡?=3￡?6?á106J?￡? 8￡?3￡??D?1|?êó?μ??÷￡oμ?μ??￠μ?êó?￠±ù???￠μ?·?éè￡?? 3￡??′ó1|?êó?μ??÷￡o??μ÷?￠μ?′??ˉ?￠μ?·1±¤?￠?￠2¨?ˉ?￠μ?àóìú?￡? ??àíá?μ?1ú?êμ￥??? 3¤?è￡¨L?òs￡?￡o?×￡¨m￡??ê±??￡¨t￡?￡o??￡¨s￡????y￡¨S￡?￡o?×2￡¨m2￡?ì??y￡¨V￡?￡o?×3￡¨m3￡??ù?è￡¨v￡?￡o?×/??￡¨m/s￡????è￡¨t￡?￡oé?ê??è￡¨??￡?￡¨?aê?3￡ó?μ￥??￡???êá?￡¨m￡?￡o?§??￡¨Kg￡??ü?è￡¨|?￡?￡o?§??/?×3￡¨Kg/m3￡??￡á|￡¨F￡?￡o?￡?ù￡¨N￡?1|￡¨?ü￡?μ?1|￡?μ??ü￡?￡¨W￡?￡o?1?ú￡¨J￡??1|?ê￡¨μ?1|?ê￡?￡¨P￡?￡oí?ì?￡¨w￡??1??￡¨p￡?￡o?á?1?¨￡¨Pa￡??úDμD§?ê￡¨|?￡?èèá?￡¨μ?èè￡?￡¨Q￡?￡o?1?ú￡¨J￡?±èèèèY￡¨c￡?￡o?1?ú/?§??é?ê??è￡¨J/Kg??￡?èè?μ￡¨q￡?￡oJ/kg?òJ/m3? μ?á÷￡¨I￡?￡o°2?à￡¨A￡?μ??1￡¨U￡?￡o·üì?￡¨V￡??μ?×è￡¨R￡?￡o?·?·￡¨|?￡??￡? μ￥??????? 1nm=10-9m,1mm=10-3m,1cm=10-2m;1dm=0.1m,1Km=103m,1h=3600s,1min=60s,? 1Kwh=3.6?á106J.1Km/h=5/18m/s=1/3.6m/s,1g/cm3=103Kg/m3,1cm2=10-4m2,? 1cm3=1mL=10-6m3,1dm3=1L=10-3m3,? ′ê1ú￡omoá(10-3)￡?|ì?￠(10-6)￡?K?§￡¨103￡?￡?M?×(106)? 1?ê?? ?ù?èv=s/t￡??2.?ü?è|?=m/v￡??3.?1??P=F/s=|?gh￡?? 4.??á|F=G??=|?òogV??=G￡¨Dü???ò?ˉ??￡?=F?òé?-F?ò??=G-F?ˉ?￡?? 5.?ü????oaì??t￡oF1L1=F2L2￡?6.1|w=Fs=Gh￡¨??·t??á|×?1|￡?=Pt￡?7.1|?êp=W/t=Fv￡?? 8.?úDμD§?ê|?=WóD/W×ü=Gh/Fs=G/nF=G/(G+G?ˉ)?=fL/Fs(????×é????à-??ì???·t?|2áá|×÷1|)￡?? 9.èèá?￡oèè′?μY?ü·?èèQ=cm?÷t￡?è?á?íêè?è?é?Q=mq=Vq￡?μ?èè￡oQ=?I2Rt? 10￡?μ??§1?ê?￡oμ?á÷￡oI=U/R=P/U?μ?×è￡oR=U/I=U2/P?μ??1￡oU=IR=P/I? μ?1|￡oW=Pt?=UIt?=I2Rt=U2t/R?μ?èè￡oQ=?I2Rt￡¨?1?ú?¨?é￡?=UIt==U2t/R? μ?1|?ê￡oP=W/t=?UI=I2R=U2/R? ′?áaμ??·ì?μ?￡oI=I1=I2,U=U1+U2,R=R1+R2?U1:U2=P1:P2=Q1:Q2=W1:W2=R1:R2? 2