State whether each of the following will increase or decrease the total energy content of the system.
Work done on the system.

Explanation

To determine whether the work done on the system will increase or decrease the total energy content of the system, we can follow these steps:

### Step 1: Understand the Concept of Work in Thermodynamics
In thermodynamics, work done on a system is considered positive. This means that energy is being added to the system.

**Hint:** Remember that in thermodynamics, the sign convention for work done on the system is positive.

### Step 2: Identify the Effect of Work on Energy
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