The work done by a force is calculated using the formula:
\[ \text{Work} = \text{Force} \times \text{Distance} \times \cos(\theta) \]
where:
- Work is measured in joules (J),
- Force is measured in newtons (N),
- Distance is the distance over which the force is applied,
- \(\theta\) is the angle between the force and the direction of movement.
In this scenario, the person pushes against the wall with a force of 500 newtons, but the wall does not move. Since the distance the wall moves is 0 meters, no work is done. Therefore, the correct answer is:
0 joules.