The emission lines from O III are called ____ because they are not visible laboratories on Earth due to the much greater pressure of the gas on Earth
a. unique lines
b. unresolved lines
c. forbidden lines
d. unseen lines
e. "fathom" lines
c
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The sun is a star in the Milky Way Galaxy
Indicate whether the statement is true or false
Helium fusion does not begin until the star has entered the giant region of the H-R diagram
Indicate whether the statement is true or false
Relative to the age of the universe, how old is our solar system?
A) It is about 1% as old as the universe. B) It is between about 5 and 10% as old as the universe. C) It is about one third the age of the universe. D) It is nearly the same age as the universe.
In a thermodynamic process, the internal energy of a system in a container with adiabatic walls decreases by 800 J. Which statement is correct?
A. The system lost 800 J by heat transfer to its surroundings. B. The system gained 800 J by heat transfer from its surroundings. C. The system performed 800 J of work on its surroundings. D. The surroundings performed 800 J of work on the system. E. The 800 J of work done by the system was equal to the 800 J of heat transferred to the system from its surroundings.