Determine the mass of a cast iron part with a volume of 20 cm ^ 3 if the density of cast iron is 7 = 10 ^ 3 kg / m ^ 3

Given: V (volume of the cast iron part under consideration) = 20 cm3 (in SI systems V = 20 * 10 ^ -6 m3).

Constants: according to the condition ρh (density of cast iron) = 7 * 10 ^ 3 kg / m3.

To determine the mass of the cast iron part under consideration, we apply the formula: m = ρh * V.

Calculation: m = 7 * 10 ^ 3 * 20 * 10 ^ -6 = 0.14 kg or 140 g.

Answer: The cast iron part in question has a mass of 140 g.