Suppose that hydrogen, rather than iron, had the lowest mass per nuclear particle. Which of the following would be true?
A) Stars would be brighter.
B) Stars would be less massive.
C) All stars would be red giants.
D) Nuclear fusion could not power stars.
D
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The following images show five planets in our solar system. Rank these planets from left to right based on the amount of time it takes them to orbit the Sun, from longest to shortest. (Not to scale.)
What will be an ideal response?
Given the correct quantity, what are three essential components for complete combustion?
A planetary nebula
a. produces an absorption spectrum. b. produces an emission spectrum. c. is contracting to form planets. d. is contracting to form a star. e. is the result of carbon detonation in a 1 Mo star.
In terms of mass, Jupiter is made mostly of
a. rock. b. molten iron. c. water. d. hydrogen and helium. e. carbon dioxide.