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A 4.0 g Pin-Pong ball is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally submerged, the tension in the thread is 0.028 N. (a) Find the radius of the ball. The volume of a sphere is V =4πr3/3 (b) If the string is cut, what would be volume of the Ping Pong is submerged.

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