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A new planet has a mass of 2.0x10^24 kg, a radius of 4.5x10^6m, and no atmosphere. A 100 kg space probe is to be launched vertically from its surface. If the probe is launched with an initial kinetic energy of 6.0 x 10^8 J, the what will be its velocity when it reaches 5.2x10^6m from the center of the new planet?

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