What do each of the following measure and what are the units for each of the variables listed? Pressure

Answer 1

Pressure is a measure of the force exerted per unit area. It quantifies how much force is applied over a specific area.

Units of Measurement:

1. Pascals (Pa) - The SI (International System of Units) unit of pressure.

   • 1 Pascal = 1 Newton per square meter (N/m²)

2. Atmospheres (atm) - A unit commonly used to measure atmospheric pressure.

   • 1 atm ≈ 101,325 Pa

3. Millimeters of Mercury (mmHg) - Often used in medicine and meteorology.

   • 1 mmHg ≈ 133.322 Pa

4. Torr - Similar to mmHg and often used interchangeably.

   • 1 Torr = 1 mmHg

5. Bar - Another unit of pressure commonly used in meteorology and engineering.

   • 1 bar = 100,000 Pa

6. Pounds per square inch (psi) - Commonly used in the United States for various applications, including tire pressure.

   • 1 psi ≈ 6894.76 Pa

Summary:

• Measure: Force per unit area
• Common Units: Pascals (Pa), atmospheres (atm), mmHg, Torr, bar, psi.