Compared with hang time on Earth, hang time on the Moon would be
A) less.
B) the same.
C) greater.
Answer: C
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Take a cup of water, add sugar, and stir. If the resulting solution contains sugar crystals that do not dissolve, the solution is said to be
a. an unsaturated solution. b. a saturated solution. c. a homogeneous solution. d. none of these.
When the distance between a pair of stars doubles, the force between them
A) decreases by one-quarter. B) decreases by one-half. C) increases to twice as much. D) increases to four times as much. E) stays the same.
Where are the globular clusters found?
A. Primarily in the disk, with a few in the bulge B. Anywhere and everywhere- nowhere in particular C. In the solar neighborhood D. In the halo, spherically distributed around the Milky Way center E. Hiding within Bok Globules and molecular clouds
Which is a key difference between electric charges and magnetic poles?
a. Electric charges can be separated while magnetic poles always occur together as opposite poles of equal strength. b. Magnetic monopoles exist but isolated electric charges are never found. c. Like electric charges repel but like magnetic poles attract. d. An electrically charged rod attracts an electrically neutral object but a magnet does not attract and unmagnetized chunk of iron. e. In electricity, unlike charges repel, but in magnetism, unlike poles attract.