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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).
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
Atomic weight of an atom is equal to? Answer: sum of the number of protons and neutrons.
The cross-section of exogenous tree is as shown in given figure.The following components are visible to the naked eye: Cross-section of exogeneous tree 1. P
State the term - Post-tensioned concrete In Post-tensioned concrete construction, as shown in Figure, tendons are placed inside concrete and stretched after concrete has attai
Explain Information Processing and Perception - Driver Performance The time required to respond successfully to any driving situation, such as an emergency, involves four stage
Mechanism of taking up loads for concrete paving blocks Paving for concrete blocks comprises closely packed paving blocks in pre-determined patterns and tiny joint spaces bet
Planning of Water Transport Facilities: Definition of Terms In water transport system, a number of terms are used. It is necessary for a civil engineer to know the pr
#ques5. A rectangular channel is 3 m in width and draws water from a lake. The channel slope is 0.001 and the Manning’s n is 0.0013. What will be the discharge in the channel when
Q. The field density of a compacted fill is determined by means of a core cutter whose empty weight is 1000 g and volume is 1000 cm 3 . The cutter full of soil weights 2890 g. If
What is foundation?
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