When a star's inward gravity and outward pressure are balanced, the star is said to beGroup of answer choicesin hydrostatic equilibrium.a stage 2 protostar.in gravitational collapse.in thermal expansion.in rotational equilibrium.

Which of the following forces opposes gravity, keeping main sequence stars in equilibrium?

Which two forces balance each other out in a star?*1 pointStrong nuclearWeak nuclearGravitationalElectromagneticThermal Pressure

Protostars two to eight times the mass of the sun become...*1 pointLow mass starsIntermediate mass starsHigh mass starsBrown dwarfs

Which of the following is the name for a group of stars and their systems that are held together by gravity?

The larger the protostar mass, the ______ its protostar phase will last.*1 pointshorterlonger