The Petrified National Forest is found in the state of
a. Nevada
b. New Mexico
c. Arizona
d. Utah
c
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Galaxies have stars of varying ages, but the stars of elliptical galaxies are typically....
A. Population I. B. Population II. C. blue-white. D. contained in the spiral disk.
A 120-V rms voltage at 60 Hz is applied across an RC circuit. The rms value of the current in the circuit is 0.60 A, and it leads the voltage by 60°. What is the capacitance in this circuit?
A) 17 ?F B) 16 ?F C) 15 ?F D) 14 ?F E) 13 ?F
Generally, the solubility of gases in liquids increases with
a. decreasing temperature and increasing pressure. b. increasing temperature and decreasing pressure. c. decreasing temperature and decreasing pressure. d. increasing temperature and increasing pressure.
Magnifying Glass With the Image at the Near Point of the Eye: A person with normal eyesight uses a converging lens of focal length 10 cm as a magnifying glass to finish an engraving job. To see detail, he holds the lens very close to his eyes. What is the maximum angular magnification of the lens under these circumstances?
A. 3.5 B. 4.5 C. 6.5 D. 7.5 E. 8.5