Find the mass of a part made of copper if its volume is 20 cm3. The density of copper is 8900 kg / m3.

The mass of a part can be calculated using the formula:
m = ρ * V, where m is the required mass of the part (kg), ρ is the copper density (ρ = 8920 kg / m ^ 3), V is the volume of the copper part (V = 20 cm³ = 20 * 10 ^ -6 m³) …
Let’s calculate the mass of the copper part:
m = ρ * V = 8900 * 20 * 10 ^ -6 = 0.178 = 178 g.
Answer: The mass of the copper piece is 178 g.