A planet has two small satellites in circular orbits around the planet. The first satellite has a period 18.0 hours and an orbital radius 2.00 × 107 m. The second planet has an orbital radius 3.00 × 107 m
What is the period of the second satellite? A) 60.8 h
B) 12.0 h
C) 33.1 h
D) 9.80 h
E) 27.0 h
C
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An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move
a. counter clockwise around the celestial pole. b. clockwise around the celestial pole. c. from left to right. d. from right to left. e. nearly vertically upward.
The large moons of Jupiter have low densities suggesting compositions that are a mixture of rocky materials and ________
Fill in the blank(s) with correct word
Of the billions of possible combinations of atoms into organic molecules, only about 1500 actually occur
Indicate whether the statement is true or false
If you made a plot of open clusters on a star map, they would be
A. concentrated along the Galaxy's disk. B. evenly scattered on the page. C. clustered away from the Galactic bulge. D. spherically arranged in a halo.