Question

Convert 76 cm of mercury pressure into Nm^2 using dimensional

Answer 1

Pressure of a fluid = density x gravity x height

Density of mercury = 13560 kg/m³

Gravity = 10m/s²

Height = 76cm = 0.76m


Pressure = 13560 kg/m³ x 10m/s² x 0.76m

                = 103056 kg/ms²


But Force = mass x acceleration

N = kg x m/s²

kg = N/(m/s²)


Pressure = 103056 [N/(m/s²)] / ms²

                = 103056 N/m²

Answer 2

Answer:

Explanation:

Pressure of a fluid = density x gravity x height

Density of mercury = 13560 kg/m³

Gravity = 10m/s²

Height = 76cm = 0.76m

Pressure = 13560 kg/m³ x 10m/s² x 0.76m

= 103056 kg/ms²

But Force = mass x acceleration

N = kg x m/s²

kg = N/(m/s²)

Pressure = 103056 [N/(m/s²)] / ms²

= 103056 N/m²