One of the largest barometers ever built was an oil-filled barometer constructed in Leicester, England in 1991. The oil had a height of 12.2 m. Assuming a pressure of 1.013 × 10⁵ Pa, what was the density of the oil used in the barometer? A)798 kg/m³ B)847 kg/m³ C)981 kg/m³ D)1150 kg/m³ E)1210 kg/m³

Question

Quizplus · Accepted Answer

The pressure exerted by a fluid column is given by P = ρgh, where ρ is the density, g is the acceleration due to gravity (approximately 9.81 m/s²), and h is the height of the fluid column. Rearranging for density, ρ = P/(gh). Substituting the given values, ρ = (1.013 × 10⁵ Pa) / (9.81 m/s² × 12.2 m) ≈ 847 kg/m³.

One of the Largest Barometers Ever Built Was an Oil-Filled