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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).
Types of Surveys and Investigations: For preparing a good road project, the following surveys and investigations are needed: (a) Traffic Surveys (b) Topogr
Breast Walls Needed to buttress uphill slopes. Figure : Breast Check Walls Small retaining structures provided in series to arrest landslides. Gabio
A certain soil has 99% by weight finer than 1 mm, 80% finer than 0.1 mm, 25% finer than 0.01 mm, 8% finer than 0.001 mm. Draw the grain-size distribution curve and determine the pe
how is total station used?
Determine the Steps for routine inspection? A routine inspection should normally include: - A Level I inspection on 100% of the underwater portion of the structure to determ
what''s a distomat?
Determine the Strain Compatibility method For estimating the ultimate strength of prestressed concrete members in flexure, 'Strain Compatibility method' may be used. For calcul
Q. Write a short note on Economic Span of a Bridge? The span for which the total cost of bridge will be minimum is known as the economic span. The ratio of Cost of super str
What is Initial Prestress From the transfer stage, tensile stresses in tendons apply compressive stresses in concrete. The initial value of these stresses (in tendons or in co
An undisturbed sample of sand has a dry weight of 18.9 N and a volume of 1143 cm 3 . The solids have a specific gravity of 2.72. Laboratory tests indicate void ratios of 0.40 and 0
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