A dancer begins performing a pirouette with arms extended. (A pirouette is a complete spin about a vertical axis.) This motion is completed most easily when the rotational inertia is decreased by   holding the arms straight up and extending one foot straight out to the side. bringing the arms and legs in a line with the body. bending at the waist at a right angle. extending the arms and one leg straight out to the sides.

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A dancer begins performing a pirouette with arms extended. (A pirouette is a complete spin about a vertical axis.) This motion is completed most easily when the rotational inertia is decreased by  


holding the arms straight up and extending one foot straight out to the side.
bringing the arms and legs in a line with the body.
bending at the waist at a right angle.
extending the arms and one leg straight out to the sides.
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