A-LevelPhysicsForces, density and pressure9702/12 · Oct/Nov 2022 · Q151 Mark

A solid cube is floating in equilibrium in liquid mercury. The cube is made of iron of density 7900 kg m⁻³. The cube floats with 42% of its volume above the surface of the mercury. What is the density of the mercury?

A3300 kg m⁻³

B4600 kg m⁻³

C14000 kg m⁻³

D19000 kg m⁻³

✓ Correct answer

C: 14000 kg m⁻³

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2022 Paper 1 Variant 2, question 15.

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