Select all units that are commonly used to represent pressures.Multiple select question.lb/in2mm HgN⋅mcm3atm

To identify the units commonly used to represent pressure, let’s evaluate the provided options:

1. lb/in² (pound per square inch) - This is a commonly used unit of pressure, particularly in the United States, often referred to as psi.
2. mm Hg (millimeters of mercury) - This unit is frequently used in measuring blood pressure and for barometric pressure readings.
3. N⋅m (Newton-meter) - This is not a unit of pressure; it represents torque, as pressure is defined as force per unit area, typically noted as N/m² (Pascals).
4. cm³ (cubic centimeters) - This is a unit of volume, not pressure, and is not used for representing pressure.
5. atm (atmosphere) - This is a standard unit of pressure, commonly used in various scientific fields.

Summary of Commonly Used Pressure Units

• lb/in² (psi)
• mm Hg
• atm

Final Answer

The commonly used units to represent pressure from the given options are: lb/in², mm Hg, and atm.