Question

1
Q. What does the negative sign in the
expression for potential energy (U = - p E cos e)
signify?
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Answer 1

Answer:

the significance of the negative charge is that it tells the opposite direction of the potential energy

Explanation:

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Answer 2

Answer:

The negative sign provides the convention that work done against a force field increases potential energy, while work done by the force field decreases potential energy. Common notations for potential energy are PE, U, V, and Ep.