In the above H-R diagram, which main sequence star is bluish in color?
A. A
B. B
C. C
D. D
E. E
Answer: A
Physics & Space Science
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The concept of hydrostatic equilibrium is critical to understanding how the Sun has remained stable long enough for live to evolve here
Indicate whether the statement is true or false
Physics & Space Science
Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen, compared to hydrogen,
A) is greater. B) is less. C) is the same. D) cannot be determined since pressure and volume are not given.
Physics & Space Science
A "gamma" ray is
A. an electron. B. a helium nucleus. C. two electrons bound to two neutrons. D. electromagnetic radiation.
Physics & Space Science
Terrestrial planets, like Earth, are made up of rock and metal
a. True b. False Indicate whether the statement is true or false
Physics & Space Science