A rock is suspended from a scale reads 20.0 N. A beaker of water (having a density of 1000 kg/m3) is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock? A) 3.00 × 103 kg/m3 B) 1.60 × 103 kg/m3 C) 2.67 × 103 kg/m3 D) 2.50 × 103 kg/m3 E) 2.33 × 103 kg/m3

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