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 P is the pressure, 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