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5R|60kgѩoֹ_ʼ80sĕrgƽֱ1000mOѩ\^ֲܵ׃_ʼ\ӵ8srgֱ\ĵ8sĩ_ʼRѩĹʱֲ׃^mֱ\һΕrgѩDŽֱ\ٶȴС15m/s֪_ʼ\ӵ8sRѩƽ8sʵһt\^Rѩƽ________Wѩ\^С_________N

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8ñֵxWһNõķĂñֵxжxʽ_                                                  

AI=U/R               B늈E=kQ/r2

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CŸБB=F/IL          D늄U=/q

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9ڿ՚䣬ڲ̫ķrܵcٶȳȡԓvSrgt׃PϵӽˆDе                              

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10һкCMIJΈDDʾЌt10rIJ̓t21.5srIJΣңt2t1Сһɴ˿Д                             

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ALһ60cm            BһxS

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Cһ6s          Dٿ0.1m/sҲ0.3m/s

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11DʾһСA̶ڹ⻬ˮƽ^ϣһ̎ÎСBFoСBһֱABBٶv0ʹˮƽ\,tf_                                                  (     )

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A.ABͬN늺ɣBһٶ׃\

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AF10N           B.F2N           C.F=2N            D.F2N

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BR1R2ܷքe36

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156֣ijͬWCɡrעQֱyõĔ±ʾlF5MеPV˷e^ƫxӋo`ôɴƫԭ_______________

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2

3

4

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16(6) ÆΔ[yٶȡČr֪[ֱ2.00cm׌̶ȳߵ̾ʔ[đc[Qֱ´DtΔ[[L______mijΌy40ȫӵĕrgDʾtΔ[______sΌyٶg=________m/s2.

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176֣ijͬWDʾbоƽw\ɂͬĻ܉MNքeڰlСFPQNĩcɿ⻬ˮƽ܉϶˷քeb늴FCD{늴FCDĸ߶ʹAC=BDĶCСFPQ܉̎ˮƽٶȡFСFPQքe늴FCDȻДԴʹɂСFͬijٶͬrքe܉MN¶ԿPQֻ׃܉Mĸ߶ȣ؏^쵽ͬĬF@f___________________________________________________

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187֣lOijЩ·ָʾõһNԪɿ̖ˆD1ֻ +̖һݔ룬 D̖һrܰl⡣SṩijOܵUDIDDʾ

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Sm(m)

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10

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2012֣Dʾ܃һLh=15׵ĹһЩ՚]؞27ºCˮƽÕr՚Ll1=20ףDף≺1.0105ұֲ׃֪ˮyܶȞ13.6103ǧ/3 ȡg9.8/2

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21(12) ڹ⻬Ľ^ˮƽһ|m=1.010-3kgq=1.010-10CĎСoֹOcOcԭcԓˮƽȽֱϵOxyFͻȻһxS򡢈СE=2.0106V/mĄ늈ʹС\_ʼӋrڵ1sĩ늈ͻȻ׃ySС׃ڵ2sĩ늈ͻȻʧ3sĩСλá

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һλͬW@ӷ1sСxSٶȞĄֱ\λx12sС+yٶȞĄֱ\ӣλy2ٶ3sС+yֱ\ӣλsСęMx1vy2+s

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22.(14) Dʾ⻬ƽˮƽٌ܉MNPQlMcPcgBһֵRڃɌ܉gcdfe΅^дֱ܉ƽQֱϡdĄ򏊴ňŸБȞBһ|mrLҲÞlČwabֱRڌ܉cň߅d0FһˮƽҵFabʹoֹ_ʼ\ӣabx_ňǰֱ\abc܉ʼKý|܉費ӋFSabcʼλõľxx׃rDF0֪

1abx_ň߅rٶ

2abͨ^ň^^·ĵ

3d0MʲôlrabMňһֱ\

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2314֣DʾSСͬܶȾˮƽ㶨Lʹ\ӣĦӋ֪LcMeȣF=kSkһ

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  2ԓLLc·oP˿LܺLݵĸԖřPL܅ƽLEPLUı_ʽ

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