Chapter 5, Problem 5.4P

Interpretation Introduction

Interpretation: The unit of pressure (millimeter of mercury) needs to be explained.

Concept Introduction: Pressure is defined as force per unit area thus, its unit is ${\text{N/m}}^{\text{2}}$ . Here, N is unit for force and ${\text{m}}^{\text{2}}$ is the unit of area. The SI unit of pressure is Pascal (Pa), which is equal to 1 ${\text{N/m}}^{\text{2}}$ .