Some dark matter may be ordinary matter that orbits in the halo of the galaxy. Which of the following would not be considered a type of ordinary dark matter?
A) you, if you happened to be floating in the halo of the galaxy
B) globular clusters in the halo of the galaxy
C) planets in the halo of the galaxy
D) brown dwarfs in the halo of the galaxy
B
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In the previous question, just before hitting the ground, what is the final speed of the heavy stone compared to the light one?
a) quarter as much b) half as much c) the same d) twice as much e) four times as much
Energy
a)is the same thing as power. b)is a vector quantity. c)is measured in the same units as work. d)has the same units of velocity. ?
____________________ formed as Mercury cooled and shrank
Fill in the blank(s) with correct word