A fluid pressure equivalent to a 25-meter water head matches_________________?
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Answer: B. 245 kN/m2
Explanation
Hydrostatic pressure is calculated by multiplying fluid density by gravitational acceleration and height of the fluid head. Substituting standard values gives one thousand kilograms per cubic meter multiplied by nine point eight one and twenty-five meters. The resulting calculation yields approximately two hundred forty-five kilonewtons per square meter for the hydrostatic pressure. Pressure due to a liquid column depends solely on fluid density, gravitational field strength, and column height. Water density is commonly taken as one thousand kilograms per cubic meter in standard engineering calculations. Multiplying density, gravity, and twenty-five meters produces a pressure value expressed in Pascals or kilonewtons per square meter.
Option A suggests twenty-five kilonewtons per square meter, which underestimates the pressure by a factor of ten. Option C proposes twenty-five hundred kilonewtons per square meter, representing an incorrect decimal placement in calculation. Option D and E list values that do not correspond to the correct hydrostatic pressure formula multiplication.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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