What is Water pressure: Definition and 149 Discussions

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.
Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre (N/m2); similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and U.S. customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure, and the torr is defined as 1⁄760 of this. Manometric units such as the centimetre of water, millimetre of mercury, and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.

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  1. R

    Water hydro statics and presure

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  2. D

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  3. K

    Is the water pressure equal in a sealed column at the top and bottom?

    Is the water pressure equal in a sealed column at the top and bottom? If I created 1 bar of pressure would this also be equal at the top and bottom?
  4. D

    How Does Atmospheric Pressure Affect Water Stream Shrinkage?

    Homework Statement Water flows through a hole at the bottom of a tank that is filled to a height h=3m. The radius of the hole is r1 = 1.5 cm. 1. What is the speed of the water immediately after it leaves the hole? 2. At what distance d below the bottom of the tank is the radius of the stream...
  5. arpon

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  6. S

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  7. T

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  8. S

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  9. Bruno Carbone

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  10. M

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  11. B

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  12. J

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  13. P

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  14. G

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  15. B

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  16. D

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  17. J

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  18. B

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    Hello dear sirs/madams, I would ask you to answer the following question. I have a flexible hose with a diameter of 5 cm, a length of 10 meters, it is in a vertical position and is filled to the top, with water. The hose is sealed on the top and the bottom. At the top of the hose...
  19. M

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  20. X

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  21. C

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  22. A

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  23. M

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  24. M

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  25. E

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  26. F

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  27. D

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  28. L

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  29. N

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  30. D

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  31. O

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  32. V

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  33. M

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  34. S

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  35. J

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  36. S

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  37. T

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  38. E

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  39. M

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  40. H

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  41. C

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  42. E

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  43. H

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  44. R

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  45. H

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  46. Y

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  47. T

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  48. L

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  49. S

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  50. J

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