When you run along the hall from one classroom to another you're moving through
A) space.
B) time.
C) both of these
D) none of these
Answer: C
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Suppose you see a photo showing Jupiter half in sunlight and half in shadow (i.e., a first-quarter Jupiter). This photo might have been taken by
A) the Keck telescope, on Mauna Kea, Hawaii. B) the Arecibo radio telescope in Puerto Rico. C) the Hubble Space Telescope (which orbits Earth). D) the Juno spacecraft that is orbiting Jupiter.
Which of the following is not predicted by Einstein's special theory of relativity?
A) the constancy of the speed of light B) no material object can reach or exceed the speed of light C) time dilation D) the equivalence of mass and energy E) length contraction
What is one advantage that primates have over other forms of life?
A) the ability to run fast B) extra-large brains C) the opposable thumb D) the ability to walk upright
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1000 m, but the speed remained the same, by what factor would its centripetal acceleration change?
A. 0.25 B. 0.50 C. 1.00 D. 2.00 E. 4.00