Determine the mass of the sphere
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.700 {rm m^{3}} and the tension in the cord is 900 {rm N}. What is the mass of the sphere.
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A child slides down a slide with a 29° incline, and at the bottom her speed is precisely one-fourth what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
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