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You are getting ready to return to Earth, and you need to purchase enough rocket fuel to leave your final rest stop on Arrakis. Arrakis

You are getting ready to return to Earth, and you need to purchase enough rocket fuel to leave your final rest stop on Arrakis. Arrakis has the same mass as Earth but a radius of 5 x 106 meters. At what speed must your rocket ship launch from the surface of Arrakis in order to escape its gravity

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