Corrected:
Did the system do work, or was work done on the system?
Work is done by the system.
Work is done on the system.
Correct.
How much work, expressed in joules, was involved?
(Note: Include appropriate conventions relative to the system.)
Correct.
Did the system do work, or was work done on the system?
Work is done by the system.
Work is done on the system.
Correct.
How much work, expressed in joules, was involved? (Note: Include appropriate +/- sign conventions relative to the system.)
-657