Franz needs to measure the mass of an iron cube about the size of a table tennis ball. Which units are most ap

Question

Franz needs to measure the mass of an iron cube about the size of a table tennis ball. Which units are most appropriate for him to use?

GPT-5 mini · Answer

Use grams (or kilograms). A cube about the size of a table‑tennis ball is roughly 4 cm on a side, so V = 4^3 = 64 cm^3. Iron has density ≈ 7.87 g/cm^3, so mass ≈ 7.87 × 64 ≈ 504 g ≈ 0.50 kg. Grams (or 0.5 kg) are therefore the most appropriate practical unit.

Franz needs to measure the mass of an iron cube about the size of a table tennis ball. Which units are most appropriate for him to use?

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