A cupful of liquid water placed on the surface of Mars would
A. quickly boil and evaporate.
B. rapidly cool but remain liquid.
C. expand rapidly and shatter.
D. quickly freeze into solid ice.
Answer: A
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When a planet's orbit takes it closest to the Sun, it's called
A) vernal equinox. B) perihelion. C) aphelion. D) crossing the ecliptic. E) none of the above; a planet's distance from the Sun never changes.
If you were in a spaceship in outer space and accelerating at 0.5 g, how heavy would you feel?
A) 1.5 times your normal weight B) Your normal weight C) Weightless D) Half your normal weight E) The answer depends on how fast your spaceship is moving.
John says that the value of the function cos[?(t + T) + ?], obtained one period T after time t, is greater than cos(?t + ?) by 2?. Larry says that it is greater by the addition of 1.00 to cos(?t + ?). Which one, if either, is correct?
a. John, because ?T = 2?. b. John, because ?T = 1 radian. c. Larry, because ?T = 2?. d. Larry, because ?T = 1 radian. e. Neither, because cos(? + 2?) = cos?.
Power is transmitted at high voltages because the corresponding current in the wires is
A) also high to deliver appreciable power to distant places. B) low so that overheating of the wires is minimized. C) either of these D) neither of these