Question

Which best describes stellar equilibrium?

Answer 1

Answer:

the answer is B. The core contains equal amounts of hydrogen and helium.

Stellar equilibrium is also known by its other term hydrostatic equilibrium. A star is considered to be in equilibrium when the pressures located in the star balance out the force of gravity. ... A star will remain in equilibrium until such time when the supply of hydrogen in the core is exhausted.

Answer 2

The correct answer is letter B.

Explanation: Even for the best studied star we can only measure 4 parameters: mass, luminosity, radius and chemical composition of the outer layers. We can determine the structure of the star with these parameters, because we have one more condition: the constancy of the stars over long periods of time. Even variable stars have long-term stability of the average structure. The existence of fossil algae on the earth over 1 billion years old and fossils up to 3.5 billion years old is evidence that the temperature of the earth cannot have changed by more than about 20 ° C. Therefore, the interior of the stars must be in perfect balance.