If a star is in hydrostatic equilibrium
A. its radiation pressure outwards and gravitational forces inwards are in balance.
B. it is generating energy at the same rate everywhere.
C. it is near the end of its life.
D. it is in a stable binary orbit.
E. it must be losing mass.
Answer: A
You might also like to view...
Absolute visual magnitude is calculated at a standard distance of ____
a. one light year b. one parsec c. 10 light years d. 10 parsecs e. 100 parsecs
The radius of Earth is
A. larger at the equator. B. the same everywhere. C. not known. D. larger at the poles.
The Sun is located near the edge of our galaxy, approximately 100,000 light-years from the galactic center
Indicate whether the statement is true or false
A certain piece of land can support up to 100 cattle. If the number of cattle doubles every 3 years, how many years will it take for the original cattle population of 25 to reach the land's carrying capacity?
a. 3 b. 6 c. 9 d. 12 e. 15