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A bucket of water is to be swung in a vertical circle without a drop of water being spilled. If the circle has a radius of 0.80m, what must be the minimum speed of the upside down bucket at the top the arc in order for water to stay in the bucket?
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After examining a cube-shaped object, explain, based on your observations, why Earth is not shaped like a cube? Describe 4 reasons with evidence to support each one.
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