What metal is the bearing sleeve made of, if its mass is 3.9 kg and the volume is 500 cm3.

Initial data: m (bearing sleeve mass) = 3.9 kg; V (bearing sleeve volume) = 500 cm ^ 3.

SI system: V = 500 cm ^ 3 = 500 * 10 ^ -6 m ^ 3.

To determine the metal from which the bearing sleeve is made, we calculate its density and select the appropriate metal from the density tables.

ρ = m / V = 3.9 / (500 * 10 ^ -6) = 7800 kg / m ^ 3 (corresponds to the density of steel)

Answer: The bearing sleeve is made of steel.