Planet X is a sphere where a 0.5 kg block weighs 36 N when sitting on the surface. If an object is dropped from rest at a distance 9R from X's center it is observed to impact the surface at a speed of 16,000 m/s. Find a value for the radius of planet X.

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A: Hey there, since you have asked multiple questions we have solved the first three for you. Please…

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A: This problem can be solved using basic formula related to gravitation

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