Created by StemPy LabA pump lifts water from a well and delivers it at a height of above the water level. It moves of water every minute, and the water leaves the outlet pipe at . The pump has an efficiency of . Taking , the electrical power taken by the pump is closest to
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← A smooth incline of angle 30° is fixed to the floor of a lift. The lift moves upward with a constant acceleration of g/2. A block of mass 2 kg is released on the incline. Taking g = 10 m/s², the acceleration of the block relative to the incline, and the normal force on it, areA small bob of mass 200 g hangs from a fixed point by a light string 1.0 m long. It moves in a horizontal circle at a steady speed, with the string making an angle of 60° with the vertical (a conical pendulum). Taking g = 10 m/s², the tension in the string and the time for one revolution are →
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