Question
Download Solution PDFWhat is the SI unit of pressure?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is N m-2.
Key Points
- The SI unit of pressure is named after Blaise Pascal, a French mathematician, physicist, and inventor.
- One Pascal (Pa) is defined as one newton per square meter (N/m²).
- Pressure is a measure of the force applied per unit area.
- The Pascal is widely used in various scientific and engineering disciplines to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength.
Additional Information
- Atmospheric Pressure: It is the pressure exerted by the weight of the atmosphere and is measured in Pascals (Pa) or millibars (mb).
- Barometer: An instrument used to measure atmospheric pressure, typically in millibars (mb) or Pascals (Pa).
- Gauge Pressure: It is the pressure relative to atmospheric pressure, often measured using a pressure gauge.
- Absolute Pressure: It is the total pressure exerted on a system, including atmospheric pressure, and is measured in Pascals (Pa).
- Conversion: 1 Pascal (Pa) is equal to 0.00001 bar, and 1 atmosphere (atm) is equal to 101,325 Pascals (Pa).
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