There is a piece of metal with a mass of 386 kg and a volume of 20 cubic centimeters. The density of this metal is () kg / m3

There is a piece of metal with a mass of 386 kg and a volume of 20 cubic centimeters. The density of this metal is () kg / m3

nineteen million and three hundred thousand

A piece of metal has a volume of 300 cubic centimeters and a mass of 810 grams. Its density is () grams per square meter

ρ=m/V=810g/300cm^3=2.7g/cm^3
It's metallic aluminum

A piece of metal with a mass of 445g and a volume of 50cm3 has a density of___ Kg / m3; cut the metal in half, and the density of the rest is___ kg/m3．

The density of the metal is: ρ = MV = 445g50cm3 = 8.9g/cm3 = 8.9 × 103kg / m3; because the density is a property of an object, its size has nothing to do with the volume and mass of the object, so cut off half of the metal, and the remaining density is still 8.9 × 103kg / M3