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(COLLAB Gauss's Law for Mass) Journey through the Center of the Earth. A 10²⁴-kg blue ball is dropped from an initial z-position of 3.4 x 10⁶ m through the center of a planet with radius 8.6 x 10⁶ m. If the mass of the planet is 34.1 x 10¹⁵ kg, measure the displacement of the ball at time t = 7 s?

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