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  1. Area of circular gate = pi.(1.2/2)^2 m^2 = 1.131 m^2 Force acting on the gate due to air on the right = (30x10^3) x 1.131 N = 33 930 N Let H be the ...

  2. (1) Area of gate = 2 x 1.5 m^2 = 3 m^2 Depth of centroid of gate from water surface = (3 + (1.5/2)sin(25)) m = 3.317 m Pressure at centroid = 1000 x 9.81 ...

  3. Angle between AB and the horizontal = arc-tan(1.5/2) degrees = 36.87 degrees Lenth of AB = square-root[1.5^2 + 2^2] m = 2.5 m The centroid of AB is at its ...

  4. Distance of centroid of semi-circle from bounding diameter = 2 x 2/3.pi m = 0.4244 m Distance of upper semi-circle centroid from top of tank = (1 - 0.4244) ...

  5. Force due to water acting on the gate = 1000 x 9.81 x (h/2) x (1.25 x h/sin(75)) = 6348h^2 where 1000 kg/m^2 is the density of water 9.81 m/s^2 is the ...

  6. Dept of A below surafce of water at the left hand side of the gate = (4 - 2.sin(60)) m = 2.268 m Upward thrust acting on the gate by the water to its left ...

  7. ... various positions posted by the recruitment department, for example, Mechanic and Electrician of the Engineering Department and ...

    分類:社會及文化 > 語言 2014年06月09日

  8. 機械性風化(mechanical weathering)或稱物理風化(physical weathering) 岩石因為...中英文關鍵字 中文關鍵字:機械性風化、物理風化 英文關鍵字:mechanical weath ...

    分類:科學及數學 > 地理學 2014年05月26日

  9. ...educational institution at the highest level where I shall study for a degree at the mechanic engineering where a part in a machine at the point where ...

    分類:社會及文化 > 語言 2014年05月21日

  10. 1. Use: impulse = change of momentum For car A: F.t = mv ----------- (1) For car B: F.t' = (2m).(3v) where t' is the time needed to stop car B ...