A region of expanding air tends to

A) cool.
B) warm.
C) both of the these
D) neither of these


Answer: A

Physics & Space Science

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Indicate whether the statement is true or false

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On the H-R diagram, white dwarfs lie Sirius B and Procyon B lie:

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If we know that a nonzero net force is acting on an object, which of the following must we assume regarding the object's condition? The object is:

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