}ĿW(xu)ƼСMͬW(xu)һλСС늟ጚDʾR1R2ǰl(f)Դ늉36 V׃
(1)(dng)S1]ϣS2arМؓ늟ጚĹʞ18 WR1ֵǶ?
(2)(dng)S1]S2brߜؓ늟ጚĹʞ45 W·еĿR2ֵǶ?
(3)늟ጚڵؓ͜r_P(gun)S1S2̎ʲôB(ti)?
Ŀ Դ }ͣ
}ĿͬW(xu)?yu)ˡ̽wյğc|(zh)NP(gun)ϵDʾČbMЌӛ䛔(sh)(j)±ʾՈ(j)еĔ(sh)(j)شІ}
1УҪڼ҃ɂͬğзքeͬ|(zh)ˮʳͣ߀(yng)xɂȫͬ늼ӟxͬ늼ӟĿǞ__________
Aͬrg(ni)ɂ늼ӟˮʳͷųğͬ
Bͬrg(ni)ʹˮʳߵĜضͬ
2DǸ(j)(sh)(j)ĈDЈDٱʾ__________r
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}Ŀ|韵ɳȺu҇I(lng)ԓĺNSʯͺȻYԴ_______Դ()___________һNh(hun)Ɖ^СԴڿ̽ɳijغ|(zh)(gu)rʹһNo˝ˮœˮœں^ܵĺˮ_____(׃׃С׃)(dng)ˮœ300m̎rͣںϹĸl(f)һ̖____sĸյ@̖(O(sh)ںˮеĂٶȞ1500m/s)ˮœڴܵĺˮs___________Pa(O(sh)ˮܶȞ1.0103kg/m3(sh)gȡ10N/kg)
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}Ŀһ^ˮķvČnУ傀СMքeÜضȜyõķˮĜض(sh)(j)±ʾf_
A. 傀СMČʧˮķc100
B. ֻе2MĔ(sh)(j)ԽĽMČʧ
C. ֻе34MĔ(sh)(j)ԽMČʧ
D. ֻҪ挍yĽY(ji)Ҍ͔(sh)(j)̎^_(sh)(j)Խ
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}Ŀ\lWƬӋ҂Q\ӆ}Ҫ
1DO^ĔzlWƬCÿعһɴ˿ДO\_____x١׃١\_____
2DʾabɂFքeͬһ߶oֹጷQֱu鱳(dng)MQֱuą^(q)rCͨ^ÿ0.2sعһεķӛ䛼F\^aFٶȞ1m/stÿKuĸ߶Ȟ_____mbٶȞ_____m/s
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}ĿСDʾb̽Ҏ(gu)y±ʾăɽM(sh)(j)
һĿ՚бˮ
ˮб՚
1һ(sh)(j)ړסՈCϷɂеĔ(sh)(j)Д@(sh)(j)(yng)ԓǣ_____Д(j)ǣ_____
2С̽Ŀ՚бˮcr˵4Ό30ǿ__
A.10 B.20 C.25 D.45
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}ĿF(xin)һɼס҃ɷNɵ,ywe61.3cm3,c|(zh)ͬļٺͼҽٵweքe52.5cm396.5cm3tмٵ|(zh)ҽٵ|(zh)֮Ȟ
A. 2:1 B. 3:1 C. 4:1 D. 5:1
鿴𰸺ͽ>>
Ŀ Դ }ͣ
}Ŀ̽늴FĴԏЩP(gun)СͬW(xu)(Ϳн^Č(do))ڴF@Ƴɺε늴FD錍^쵽ķNr
(1)(dng)_P(gun)]ϺՈڼDИ˳wNO_________
(2)^D____________֪є(sh)ͬrԽԽ
(3)ɈD______֪(dng)һrє(sh)ԽԽ
鿴𰸺ͽ>>
ʡ(lin)W(wng)`ͲϢeƽ_ | W(wng)кϢe^(q) | p_e^(q) | vʷ̓oxкϢe^(q) | ֙(qun)e^(q)
`ͲϢeԒ027-86699610 e]䣺58377363@163.com