}Ŀ҂(jng)Կ@NF(xin)܇R·Ͽ^ԺR·߅Ę~SL(fng)hDʾR·߅Ę~ABCһhՈ벢f
Ŀ Դ }ͣ
}ĿP(gun)ڌ(do)wf_ǣ
A. ڌ(do)wɶ˵늉Խ(do)wԽ
B. ͨ^(do)wԽС(do)wԽ
C. (do)wɶ˵늉0Vr(do)w0
D. (do)w費Ɍ(do)wɶ˵늉ͨ^(do)wQ
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Ŀ Դ }ͣ
}ĿDʾС|y≺ĴСO(sh)ӋČ£
Aӛ䛏ɜyӋʾ(sh)F@Ǵ⌦Pĉ
Bպˮϒ^Pڹ⻬DP
CÏɜyӋ^^ֱPÓx档
DPc|ֱӋPcĽ|eS
E(j)pF/SӋ≺ĴСp
1С|ǰ헵?q)ˣ_
2С|պˮPڹ⻬ϣDPĿʲô
3С|õďɜyӋ05 NPcĽ|e10cm2 xܡܡy≺ĴСO(sh)≺s1.0105 Pa
4Ҫy≺ĴСJ錍xPe(yng)MxһЩСһЩ
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Ŀ Դ }ͣ
}ĿСAy늟늹ʵČС~늉2.5V
1ùP挧(do)·B___________
2СAE_]_P(gun)l(f)F(xin)Сݛ]аl(f)⣬˕r(yng)ԓ_______
A.Q
B.z龀·
C.^늱ʾ(sh)rQ
D.Ƅӻ׃Ƭ
3MЕrMССڰl(f)СݵIJ@rСA@ذl(f)F(xin)늱ʾ(sh)ʾ(sh)_______ 늉ʾ(sh)_______ ׃/׃С/׃
4С݃ɶ늉1.5Vrʾ(sh)DʾСݵ~ʿ_______
A. 0.75W B. 0.65W C. 1.25W D. 1.35W
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Ŀ Դ }ͣ
}Ŀy≺ֵbDʾעɜyӋ̶ȳߵȣ
^עxעݷeV=20mL
ÿ̶ȳߜy ӛ L=10cm
ǰעĻעͲĵײĿ ȻסעСף
ˮƽҾעͲ(dng)עеĻ_ʼӕrӛɜyӋʾ(sh) F=22Nڴ⌦ĉ
Ʉt≺ֵp=_ʽ딵(sh)(j)ýY(ji)Pa
ʸ(j)ӋY(ji)M` ƤñסעСКwڻcעͲgĦۏɜyӋʾ(sh)]x(zhn)x(sh)ƫ
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