7.6 The sketch shows a common consumer product called the Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (d = 3 mm, T = 10°C) with a speed of 25 m/s. Estimate the minimum electrical 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 At, the amount of mass that flows out the nozzle is Am, and the corresponding amount of ki- netic energy is (AmV² /2). High-speed water jet Water reservoir Motor and pump Ceee PROBLEM 7.6

7.6 The sketch shows a common consumer product called the Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (d = 3 mm, T = 10°C) with a speed of 25 m/s. Estimate the minimum electrical 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 At, the amount of mass that flows out the nozzle is Am, and the corresponding amount of ki- netic energy is (AmV² /2). High-speed water jet Water reservoir Motor and pump Ceee PROBLEM 7.6

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter33: Alternating Current Circuits

Section: Chapter Questions

Problem 33.6CQ: As shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor,...

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