When you weigh yourself on a bathroom scale on a slight incline instead of a level surface, your weight reading on the scale will be
A) less.
B) no different.
C) more.
Answer: A
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Which statement about the first quarter moon is FALSE?
A) It rises about noon. B) From the Earth, it appears 25% sunlit. C) It is the half moon of the evening sky. D) It is highest in the sky at sunset. E) It occurs about a week after new moon.
At a certain depth in the ocean, the absolute pressure is p. If you go to twice that depth (treating the water as incompressible)
A) the absolute pressure will be 2p. B) the absolute pressure will be less than 2p. C) the absolute pressure will be greater than 2p. D) the gauge pressure will not change. E) the gauge pressure will increase but will not double.
What is the scientific status of astrology today?
A) Although astrology is implausible on general theoretical grounds, there is real observational evidence for it. B) It is implausible on general theoretical grounds, and there are no scientific observations to support it. C) Although it is theoretically plausible, and although real observational evidence exists for it, most scientists still will not accept astrology because it seems too unconventional or "kooky." D) Although there is no real observational evidence for this phenomenon, astrology is theoretically plausible. E) Astrology is plausible on general theoretical grounds, and there is also real observational evidence for it, which is why most scientists believe that astrology has real validity.
A substance composed of two or more elements chemically combined in a definite, fixed proportion by mass is
a. a molecule. b. a compound. c. an ion. d. a mixture.