Which is the smallest?
A) The distance from the Sun to the Andromeda Galaxy
B) The distance from the Sun to the Virgo cluster of galaxies
C) The distance from the Sun to the center of the Milky Way Galaxy
D) The Solar System.
E) The distance from the Sun to its nearest neighboring star
Ans: D) The Solar System.
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A(n) ____ emits large amounts of energy but photographically appears to be a single point of light much like a star
a. a planet like Venus b. E galaxy c. spiral galaxy d. double-lobed radio galaxy e. quasar
How many moles are there in 2.0 kg of copper? (The atomic weight of copper is 63.5 and its specific gravity is 8.9.)
What will be an ideal response?
Are sunspots really dark and cool?
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Mary and Debra stand on a snow-covered roof. They both throw snowballs with the same initial speed, but in different directions. Mary throws her snowball downward, at 30° below the horizontal; Debra throws her snowball upward, at 30° above the horizontal. Which of the following statements are true about just as the snowballs reach the ground below?
A. Debra's snowball will have a higher speed than Mary's snowball. B. Mary's snowball will have a higher speed than Debra's snowball. C. Both snowballs will hit the ground with the same speed. D. Both snowballs hit the ground at the same time. E. Mary's snowball reaches the ground before Debra's snowball.