First Law of Thermodynamics

Very Easy Physics Thermodynamics

In the context of thermodynamics, the first law states that energy cannot be created or destroyed, only transformed from one form to another. This principle has important implications in biological systems. Which of the following represents the correct formulation of the first law of thermodynamics?

Energy can be created from nothing.

The total energy of an isolated system remains constant.

Heat is a form of energy that cannot be converted to work.

Energy is always lost when converted from one form to another.

Hint

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