According to author Norman Mailer from his book Of a Fire on the Moon, quoted in the textbook's opening section,
A) our culture uses science to gain power over nature but doesn't know how that power should be used.
B) physics professors are crackpots.
C) science is in the process of solving most of the world's social problems.
D) quantum theory shows that the universe is infinitely deep and subtle.
E) science is leading us toward a greater understanding of the important truths in life.
A
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Two point charges of +1.0 ?C and -2.0 ?C are located 0.50 m apart. What is the minimum amount of work needed to move the charges apart to double the distance between them? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A) -36 mJ B) +18 mJ C) 0 mJ D) +36 mJ E) -18 mJ
If you drop a stone into a hole drilled all the way to the other side of Earth (neglect the molten core), the stone will
A) come to an abrupt stop at Earth's center. B) speed up until it gets to Earth's center. C) speed up until it reaches Earth's other side. D) slow down until it reaches Earth's center.
A train travels at a constant speed of 60.4 mi/h for 101.5 min. What distance does the train cover expressed to the correct number of significant figures?
A) 100 mi B) 102 mi C) 102.2 mi D) 102.18 mi E) 102.181 mi
If the speed of an object in circular motion is increased by a factor of 3, its centripetal acceleration for the same radius will be multiplied by a factor of
a. 0.111. b. 0.333. c. 1.73. d. 9. e. 3.