Scientists today do not accept the Ptolemaic model because
A) it is ancient history.
B) it was too complicated, compared to Copernicus' heliocentric model.
C) it has been shown that Ptolemy faked his data.
D) it had no explanation for retrograde motion.
E) the work of Tycho and Kepler showed the heliocentric model was more accurate.
E
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_____ is the transmission of DNA to offspring
a. Reproduction b. Development c. Homeostasis d. Inheritance e. Differentiation
Magnetic Field of a Current Loop: A current-carrying loop of wire lies flat on a horizontal tabletop. When viewed from above, the current moves around the loop in a counterclockwise sense. For points on the tabletop inside the loop, the magnetic field lines caused by this current
A. circle the loop in a clockwise direction. B. circle the loop in a counterclockwise direction. C. point straight up. D. point straight down.
If three primary colors of light shine on a white wall and produce a white spot, the primaries must be
A) additive. B) subtractive. C) multiplicative. D) divisive.
A sievert (Sv) is
A) the SI unit of absorbed dose = 1 J/kg = 100 rad. B) 10-2 J/kg. C) 3.70 × 1010 decays/s in radium. D) a dosage of 2.58 × 10-4 C/kg. E) the effective dose of 1 Gy.