Your favorite radio station is located due north of your house and broadcasts using a horizontal electric dipole antenna directed north-south. To receive this signal you need to
A. move to a town that is farther to the east or west.
B. use a magnetic dipole antenna instead of an electric dipole antenna.
C. orient the receiving antenna horizontally north-south.
D. use a vertical receiving antenna.
A. move to a town that is farther to the east or west.
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Most of the new star formation in the Galaxy is found in the:
A) halo. B) spiral arms. C) bulge. D) galactic center. E) globular clusters.
A cubic centimeter of pure water at maximum density has a mass of
a. 1 g. b. 1 kg. c. 1 cg. d. 1 lb. e. none of these
Velocity: A runner ran the marathon (approximately 42.0 km) in 2 hours and 57 min. What was the average speed of the runner in m/s?
A. 14,200 m/s B. 124 m/s C. 3.95 m/s D. 14.2 m/s
Which of the following correctly lists our "cosmic address" from small to large?
A. Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe; B. Earth, solar system, Local Group, Local Supercluster, Milky Way Galaxy, universe; C. Earth, Milky Way Galaxy, solar system, Local Group, Local Supercluster, universe.