The Sun has existed for a very long time without change in its appearance or behavior,so it must be in hydrostatic equilibrium.Under these conditions,which two parameters must be in balance at all points throughout the Sun's interior?

Question

Quizplus · Accepted Answer

Hydrostatic equilibrium requires that the force of gravity be balanced by the outward gas pressure. Since the Sun is largely composed of hydrogen gas, it is the gas pressure that maintains this balance. The magnetic field, the numbers of hydrogen and helium nuclei, and the pressures of these gases are less important in maintaining the Sun's equilibrium.

The Sun Has Existed for a Very Long Time Without