Which force listed does not actually act on the crate?
A. 
B. 
C. Both and (which are equal)
D. 
E. 
D.
Physics & Space Science
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How might we tell whether the Universe is open or closed?
What will be an ideal response?
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The moment of inertia about the x axis of the L-shaped figure in Problem 5.5 is:
(A) 24 in.4 (B) 32 in.4 (C) 38 in.4 (D) 44 in.4
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What do astronomers typically refer to as "heavy elements"?
A) elements that are heavier than iron B) elements that are heavier than carbon C) elements that are heavier than uranium D) elements besides hydrogen and helium
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Where are open clusters found?
A.) No stars are forming in the galaxy today. B.) In the halo C.) In the disk. D.) Only around the Sun. E.) B and C.
Physics & Space Science