Which is heavier: iron or silver?

Let two bodies of the same volume, made of iron and silver, be given: Vzh = Vc = V. To answer which is heavier: iron or silver, it is necessary to compare the density of metals, taking them from reference tables: ρzh = 7870 kg / m³; ρс = 10490 kg / m³. Since the mass of a body is defined as the product of the density of a body by its volume, that is, according to the formulas: mzh = ρl · Vzh, mc = ρc · Vc, then substituting the value of the densities of substances into the formulas, we obtain:

mzh = 7870 V,

mс = 10490 V,

mzh ˂ mc.

The body weight of silver turned out to be greater, that is, silver is heavier than iron.

Answer: Silver is heavier than iron.