Suppose that the centripetal force on an object in circular motion is doubled while the object keeps the same radius of rotation. By what factors would the frequency, period and velocity change?

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What is the coefficient of kinetic friction μk between the block and the tabletop?

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil