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An alloy of iron that has a weight
density of 78000 N/m^3 and its mass
density is:
780000 kg/m^3
7800 kg/m^3
780 kg/m^3
78 kg/m^3
O 1000 kg/m^3
9810 kg/m^3
133,000 kg/m^3
O to leave

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