1 kg/m2 is equal to ______________ mm water column?
Correct answer: A. 1
- A. 1
- B. 10
- C. 100
- D. 1000
Explanation
A water column of 1 mm produces about 9.81 Pa pressure, which is approximately 1 kgf/m². Thus, in the conventional engineering pressure-unit sense, 1 kg/m² corresponds to 1 mm of water column.
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