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The sketch shows a common consumer product called Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (diameter d = 3 mm, temperature T = 10 °C) with a speed of 25 m/s. Estimate the minimum electric power in watts that is required by the device. Hints: (a) Assume that the power is used only to produce the kinetic energy of the water in the jet; and (b) in a time interval ?t, the amount of mass that flows out the nozzle is ?m, and the corresponding amount of kinetic energy is (?mV2/2).
Define Inspection of Pier or Abutment? Inspection of pier/abutment may then be carried out as under: i. Conduct visual inspection of the entire surface using up and down swe
Bituminous Courses Types of Bituminous Courses The following are the various bituminous course commonly used : (a) Prime Coat (b) Tack Coat (c) Surface Dress
Grouted or Penetration Macadam:
Shrinkage of concrete in prestressed members The shrinkage of concrete in prestressed members results in a shortening of ensioned wires and hence contributes to the loss of st
How can I get theratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire
the conventional symbol used in building plan
A raft of size 4 m-square carries a load of 200 kN/m 2 . Verify the vertical stress increment at a point 4 m below the centre of the loaded area using Boussinesq's theory. Compare
processes of chemical prestressing
Question Explain components of a typical expansion joint? Answer Dowel bar-This is major component of joint. It serves to guide direction of movement of concrete growth. Therefo
Bonding performance to concrete: Epoxy-coated bars vs. galvanized bars Based on the findings of CEB Bulletin 211 the bonding of galvanized bars to concrete is lower in early
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