1.29*10^-3g/cm^3=____kg/m^3
4.45g/cm^3=____kg/cm^3
1k/cm^3=____kg/dm^3=________t/m^3
1k/cm^3=____kg/dm^3
一块石碑,长50米CM宽20CM,高3M,质量为75T,则他们的密度是____KG/立方米?
p=m/V=30g/[(65+30-83)g/1g/cm^3]=30g/12cm^3=2.5g/cm^3
5g/cm^3=( )kg/m^3
1.9*10^3 kg/m^3=多少g/cm^3
1g/cm^3=1*10^3kg/m^3
7.88*10的3次方 kg/m³=( )g/cm³
密度的基本单位是____,符号是____.有时密度的单位也用___,符号是____,1g/cm³=____kg
怎么理解g/cm*3比kg/m*3大?
0.42g/cm^3=多少kg/m^3啊