If the Universe is closed and finite, then
a. the Universe will expand forever.
b. the Universe has a center.
c. the Universe has an edge.
d. None of the other choices are correct.
d
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The volcanic activity of Enceladus has what effect outside the moon itself?
What will be an ideal response?
At the center of our galaxy, ____
a. material is available to make stars but the region is too cold to support star formation b. large stars are formed by the collision of smaller stars c. stars form at the same rate as they do in the spiral arms d. there is no star formation since there is no gas present e. there is evidence of recent, rapid star formation and supernova explosions
Freely falling bodies experience
a. motion with constant velocity. b. motion with zero acceleration. c. motion with constant acceleration. d. motion at a constant speed. e. none of the above
When thermal energy is added to boiling water, the water temperature
A) increases. B) decreases. C) remains the same.