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What influences the rate of heat exchange between two objects?

The size of the objects

The material composition of the objects

The temperature difference between the objects

The rate of heat exchange between two objects is primarily influenced by the temperature difference between them. This principle is grounded in thermodynamics, specifically the second law of thermodynamics, which states that heat naturally flows from a region of higher temperature to one of lower temperature. The greater the temperature difference, the more significant the thermal gradient, which enhances the rate of heat transfer.

While the other factors, such as the size of the objects, their material composition, and even their color, can influence heat transfer in certain contexts, none are as universally impactful as the temperature difference itself. The specific heat capacities and thermal conductivities of the materials involved do play a role, but ultimately, it is the temperature difference that dictates the flow of heat between them.

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The color of the objects

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