MCQOPTIONS
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| 1. |
__An isolated system is one in which__ |
| A. | Mass does not cross boundaries of the system, though energy may do so |
| B. | Neither mass nor energy crosses the boundaries of the system |
| C. | Both energy and mass cross the boundaries of the system |
| D. | Mass crosses the boundary but not the energy |
| Answer» C. Both energy and mass cross the boundaries of the system | |