Pressure units conversion: value of 1 mm of mercury in SI units (N/m²) Convert a pressure head of 1 mm Hg to pascals (N/m²) using the standard definition. Choose the correct value.
Mechanical Engineering
Thermodynamics
Difficulty: Easy
Choose an option
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A1.333 N/m²
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B13.33 N/m²
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C133.3 N/m²
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D1333 N/m²
Answer
Correct Answer: 133.3 N/m²
Explanation
ConceptStandard atmospheric pressure: 760 mm Hg ≈ 101325 Pa. Therefore,
Calculation1 mm Hg ≈ 101325 / 760 Pa≈ 133.322 Pa ≈ 133.3 N/m²
Final Answer133.3 N/m²