The weight of air in a bathtub (about 1/3 cubic meter) is about the same as the weight of
A) a pea.
B) an egg.
C) a small apple.
D) a pound of butter.
E) a 10-pound sack of potatoes.
Answer: D
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When two pieces of fissionable material are assembled, the average distance that a neutron travels before escaping will
A) decrease. B) increase. C) be the same.
The gas in a perfectly insulated but there is work done on the flexible container at a rate of - At what rate is the internal (thermal) energy of the gas changing?
A) -13 W B) 13 W C) 0 W D) 6.5 W
Jupiter's axial tilt is similar to that of Mercury, while Saturn's is more like ours
Indicate whether the statement is true or false
Stars much more luminous than the Sun have
A) narrower habitable zones, decreasing the odds of finding habitable planets and lifetimes too short for life to appear B) wider habitable zones, increasing the odds of finding habitable planets but lifetimes too short for life to appear C) narrower habitable zones, decreasing the odds of finding habitable planets but much longer lifetimes allowing life to appear and evolve D) wider habitable zones, increasing the odds of finding habitable planets and much longer lifetimes allowing life to appear and evolve