Two identical arrows, one with twice the speed of the other are fired into a bale of hay. The faster arrow will penetrate the bale
A) the same distance as the slower arrow.
B) twice as far as the slower arrow.
C) four times as far as the slower arrow.
D) more than four times as far as the slower arrow.
E) none of the above
Answer: C
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If you made a plot of open clusters on a star map, they would be
A. concentrated along the Galaxy's disk. B. evenly scattered on the page. C. clustered away from the Galactic bulge. D. spherically arranged in a halo.
The reason that the atmosphere of Venus is over 95% carbon dioxide is thought to be because:
A) Venus was much hotter than Earth when its atmosphere formed. B) the early plant life on Venus produced the excess carbon dioxide and consumed the oxygen. C) life on Earth formed earlier than on Venus. D) the part of the solar nebula where Venus formed contained more carbon dioxide than the part where Earth formed. E) Venus' Greenhouse Effect got out of control and became runaway after its oceans of sulfuric acid evaporated.
Humans
A) and primates evolved from a common ancestor B) and primates evolved directly from dinosaurs C) and primates evolved directly from birds D) evolved directly from modern primates
Asteroid 433 Eros is one of the largest near-Earth asteroids. For purposes of this problem, assume it is spherical. The value of g at its surface is 0.00600 m/s2 and the escape velocity is only 9.95 m/s. What is the radius of Eros?
A) 8250 m B) 16,000 m C) 1600 m D) 800 m E) 400 m