Which of the following is true of Population II stars?
A) They are located in the disk component of the galaxy.
B) They have randomly tipped orbits with a wide range of shapes.
C) They have higher metal content than Population I stars.
D) They are post-main sequence stars.
B
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The Jovian problem refers to
a. the high speed with which the Jovian planets rotate on their axes. b. the large number of satellites that orbit each Jovian planet. c. the existence of rings around the Jovian planets. d. the excess heat radiated by the larger of the Jovian planets. e. the apparently short period of time that disks exist around stars from which Jovian planets can form.
Angular and Linear Quantities: A child is riding a merry-go-round that is turning at 7.18 rpm. If the child is standing 4.65 m from the center of the merry-go-round, how fast is the child moving?
A. 5.64 m/s B. 3.50 m/s C. 0.556 m/s D. 1.75 m/s E. 1.80 m/s
A boy plays solitary seesaw by placing the seesaw's fulcrum one-eighth the distance from where he sits at one end. Which weighs more?
A) the boy B) the seesaw C) they have equal weights D) need more information
How would we view time (clocks) on the spaceship as it goes by?
A) Time is the same for everyone. B) Their clocks are going at the same rate as ours. C) Their clocks are going exactly half as fast as ours. D) Their clocks are going faster than ours. E) Their clocks are going slower than ours.