One of the curators at the art museum is tilting a large cylinder backward. At what angle ? will the cylinder of height h and radius r be in unstable equilibrium?
a.
c
Physics & Space Science
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Saturn's two shepherd moons herd the particles in the F ring
Indicate whether the statement is true or false
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In the proton-proton cycle, .007 of the mass ends up as energy, not helium
Indicate whether the statement is true or false
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Two blocks are made of the same material, but one has twice the volume of the other block. Which block will have the greater shear modulus?
A) It will be the same for both of them. B) the larger one C) the smaller one
Physics & Space Science
The critical temperature for nucleosynthesis to begin was the:
A) triple alpha reaction at 100 million K. B) deuterium bottleneck at about 900 million K. C) proton-proton cycle at 10 million K. D) iron production at 10 billion K. E) formation of lithium at 50 million K.
Physics & Space Science