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2 June, 08:19

The total energy in a system is 675 J. The kinetic energy changes from 296 J to 432 J. Which statement best describes the potential energy of this system?

It changes from 296 J to 432 J.

It changes from 379 J to 243 J.

It changes from 432 J to 296 J.

It changes from 243 J to 379 J.

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  1. 2 June, 09:34
    0
    Total energy represents sum of kinetic energy and potential energy.

    Kinetic energy varies from Ek1 = 296J to Ek2 = 432J

    That means that potential energy varies from:

    Ep1 = 675 - Ek2 = 243J

    to

    Ep2 = 675 - Ek1 = 369J

    Answer is last option.
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