Created by StemPy LabA satellite moves in a circular orbit at a height above the Earth's surface equal to the Earth's radius, . Taking at the surface, the time the satellite takes for one revolution is closest to
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← A uniform ladder leans against a smooth vertical wall, with its foot on a rough horizontal floor, as shown in the figure. The coefficient of static friction between the ladder and the floor is 0.4. The ladder is placed at different angles θ with the floor. What is the smallest value of θ for which the ladder does not slip?Water flows steadily through a horizontal pipe that narrows from a cross-section of 10 cm² to 5 cm². Two thin vertical tubes, open at the top, are fixed to the wide part and to the narrow part, as shown in the figure. The water in the tube over the wide part stands 10 cm higher than in the tube over the narrow part. Taking g = 10 m/s², the volume of water flowing through the pipe per second is closest to →
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