Question

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? uming a pressure of 1.013 × 105 Pa, what was the density of the oil used in the barometer?

Test Bank, Question 23 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 x 105 Pa, what was the density of the oil used in the barometer? 1210 kg/m3 798 kg/m3 O 847 kg/m3 O 1150 kg/m3 O 981 kg/m3

Answer 1

Given data,

pressure = 1.013 x 10⁵

Height = 12.2 m

We know that,

Pressure = $\rho$ g h

1.013 * 10⁵ = density x 9.81 x 12.2

Density = 1.013 * 10⁵ / 9.81 x 12.2

= 101300 / 119.682

= 846.40 kg / m³

Option 3 is correct