Question

Assume no heat is exchanged in the following scenarios.

If the work done on a system by external forces is zero, the change in total energy of the system                           [ Select ]                       ["is positive", "is negative", "is zero", "cannot be determined without additional information"]         .

If the work done on a system by external forces is positive, the change in total energy of the system                           [ Select ]                       ["is positive", "is negative", "is zero", "cannot be determined without additional information"]         .

If the work done by a system on external objects is positive, the change in total energy of the system                           [ Select ]                       ["is postive", "is negative", "is zero", "cannot be determined without additional information"]         .

If the work done on a system by external forces is negative, the change in total energy of the system                           [ Select ]                       ["positive", "negative", "zero", "cannot be determined without additional information"]         .

The work done on a system by external forces 5J. The total energy of the system                           [ Select ]                       ["is 5J", "cannot be determined without additional information"]         .

Answer 1

-ha Systerm. u must be Poitive

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