Final answer:
The heat emitted from a star is generated through the fusion of hydrogen to form helium in its core, leading to the outward flow of energy in the form of electromagnetic radiation.
Explanation:
The source of the heat emitted from a star is the fusion of hydrogen to form helium. This process occurs in the core of the star and releases a tremendous amount of energy, which then moves outward through the star's layers to its outer surface.
The energy emitted from a star is in the form of electromagnetic radiation, including visible light, heat, ultraviolet light, and radio waves. This energy transfer is vital for maintaining the star's temperature and brightness.
Stefan-Boltzmann law describes the energy flux from a star, showing that the power radiated by a star is proportional to the fourth power of its absolute temperature.
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