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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).
In reclamation involving large volumes of fill and tight programme, shall engineers use marine fill or mud extracted from land borrow area as filling material? There are two
Design a footing of a bridge pier
Calculate the change in volume: If the bar is 1 m long with rectangular cross section of 300 mm deep and 400 mm wide, compute the change in volume of the solid because of a lo
Why do we need to control air pollution? a. It causes harmful effects on human health, Materials and property, Plants and Animals, Visibility, Global climate and others b.
Influence line-moment 1. Replace the point of interest with an imaginary hinge. 2. Rotate the beam one unit rotation by apply equal but opposite moments to each of the two
Q. Grouting in segmental linings in tunnels? Grouting is typically carried out under pressure in segmental linings at the time of tunnel construction due to the below reasons:
Explain briefly shallow foundation?
Explain Stopping Sight Distance on Horizontal Curve Section Obstructions along the inside of curves can limit the available (chord) sight distance. A curve must be designed tha
Define the Combustion of Solid Waste? A chemical reaction in which the elements in fuel oxidize in presence of excess oxygen C → CO 2 , H → H 2 O, S → SO x , N → NO x
Ask quA contractor has both a 3-cy and a 5-cy shovel in the equipment fleet. Select the minimum size shovel that will excavate 450,000 bcy of common earth in a minimum of 120 worki
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