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Question: Which statements about potential energy are correct? Select all that apply.

a) The potential energy of a pair of interacting charged objects increases as the distance between them increases.

b) Potential energy can be either positive or negative.

c) When two interacting charged objects get very far away from each other, their potential energy approaches zero.

d) Potential energy is a property of a pair of objects.

e) A single isolated object can have potential energy.

f) A single particle does not have potential energy.

g) Potential energy is always a positive number.

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