Here's why:
* Thermal Conductivity: Metal is a much better conductor of heat than brick. This means it can transfer heat away from your hand much faster.
* Heat Transfer Rate: When you touch a cold metal object, the heat from your hand quickly transfers to the metal, making your hand feel colder. Since brick is a poorer conductor, it transfers heat away from your hand much slower.
In Summary: Even though the metal and the brick might be at the same temperature, the metal *feels* colder because it removes heat from your hand more rapidly, creating a greater temperature difference between your skin and the object.