Author Question: In a star, the balance between the inward force of gravity and the outward force of thermal and ... (Read 117 times)

madam-professor · **on:** Jul 28, 2018

In a star, the balance between the inward force of gravity and the outward force of thermal and radiation pressure is called
a. the neutrino bonding point.
b. hydrostatic equilibrium.
c. the plasma equality condition.
d. strong nuclear binding.

Question 2

When an electron goes from the ground state to an excited state,
a. energy is emitted.
b. a photon is absorbed.
c. a photon is emitted.
d. none of these occur.