The Left-Hand Side of an Open U-Tube Has a Radius

The left-hand side of an open U-tube has a radius r₁ = 0.82 cm, and the right-hand side has a radius r₂ = 0.41 cm. Mercury and oil are poured into the U-tube. The density of mercury is 13.6 g/cm³. The heights shown in the diagram are h₁ = 3.50 cm and h₂ = 57.3 cm. The density of the oil is approximately

A) 0.83 g/cm³
B) 110 g/cm³
C) 7.9 g/cm³
D) 6.9 g/cm³
E) 1.82 g/cm³

Correct Answer:

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