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A 60 kilogram kid slides down a water slide that is at an angle of 20 degree from the horizontal. He starts off 8.0 m high (vertically) with a velocity of 2.0 m/s. At the bottom, he has a speed of 9.0 m/s.
a) Determine the force of friction the kid experiences throughout the slide?
b) Find at what vertical height will the child have achieved a speed of 5.0 m/s?
A 200g ball on a 60 {cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor.
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A dam on a fresh water lake has a rectangular shape with a width of 150 m. If the water depth at the dam is 30 m, what is the total water force exerted on the dam
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Lithium is a light metallic element whose ions are used in highly efficient batteries for portable laptop computers. Each lithium ion(Li+) contains two electrons and three protons. Suppose a lithiumion is surrounded by a Gaussian surface. Is the flux..
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