# PHYICS

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Two 0.64 kg basketballs, each with a radius of 13 cm, are just touching. Ignore any other gravitational interactions.
(a) How much energy is required to change the separation between the centers of the basketballs to 1.0 m?
in J
(b) How much energy is required to change the separation between the centers of the basketballs to 10 m?
in J

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