绵阳中学2012级期末考试物理答案
1-5 dabcc 6-10 bbcab 11-12DA 13B 14CD 15AD 16CD 16CD 17AD
18:10,0,-2 19:w 1r 1/R3 20:24000,48000 21:(1)0.0171,0.0172(2)C
22:B,4/9
23:r 1 = 0.14mr 2 = 0.07m可用:F=F1=F2=28N。
24:2乘以9的根号下v0 = Rg,2R乘以9的根号下V1 = g/R+4h。
25:V0=8,W=18.5,