The total amount of power (in watts, for example) that a star radiates into space is called its
A) apparent brightness.
B) absolute magnitude.
C) luminosity.
D) flux.
C
Physics & Space Science
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How does a gas cloud become hot?
What will be an ideal response?
Physics & Space Science
Life emerged on Earth about a billion years after the solar system formed
Indicate whether the statement is true or false
Physics & Space Science
In order to understand the concept of temperature it is necessary to understand
a. the zeroth law of thermodynamics. b. the first law of thermodynamics. c. the second law of thermodynamics. d. all of the above. e. only (b) and (c) above.
Physics & Space Science
What is the ionization energy of the hydrogen atom in the n = 2 state?
A. 13.6 eV B. -13.6 eV C. 3.40 eV D. -3.40 eV E. -1.51 eV
Physics & Space Science