Final answer:
The law that explains the situation when you push against a wall and the wall pushes back is Newton's 3rd Law.
Step-by-step explanation:
The law that describes the situation where you push against a wall and the wall pushes back on you is Newton's 3rd Law. According to this law, for every action, there is an equal and opposite reaction. When you push against the wall, you exert a force on it, and in return, the wall exerts an equal force back on you. The forces are equal in magnitude but opposite in direction.
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