Created by StemPy LabAn ice skater spins on smooth ice with her arms stretched out. She pulls her arms in, and her moment of inertia becomes half of what it was. Her angular speed and her rotational kinetic energy become
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← A uniform square plate of side 2a has a square of side a cut away from one corner, as shown in the figure. How far is the centre of mass of the remaining plate from the centre of the original square?At its closest to the Sun, the Earth is 1.47 × 10¹¹ m from it and moves at 30.3 km/s. At its farthest it is 1.52 × 10¹¹ m away. Its speed at the farthest point is closest to →
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