Based on its distance from the Sun, we would expect the surface of Venus to be
A) much hotter than the Earth
B) much colder than the Earth
C) a little hotter than the Earth
D) the same temperature as the Earth
C
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According to the Big Bang theory, why do we live in a universe that is made of matter rather than antimatter?
A) Einstein's famous equation E = mc2 tells us that energy can turn into matter, but does not tell us that it can turn into antimatter. B) GUT theories predict that under the conditions that prevailed in the early universe, the normal laws of physics would have been suspended so that only matter particles were created, and no particles of antimatter. C) The fact that we live in a universe made of matter is not surprising because antimatter has never been shown to exist for real. D) During the first 0.001 second after the Big Bang, particles and antiparticles were made in almost but not perfectly equal numbers. Everything annihilated except the very slight excess of matter particles.
The change in fossils at the K-T sediment layer suggests that in addition to the dinosaurs, _________ also went extinct.
Fill in the blank(s) with the appropriate word(s).
Phobos and Deimos are probably captured comet nuclei
Indicate whether the statement is true or false
The wheelbase on a truck is 2.4 m wide and the truck's center of mass is located along the vertical centerline of the truck and 2.0 m above the bottom of the tires. The truck is going around a banked turn, when it is forced to stop
What is the maximum slope that the bank can have such that the truck will not tip over? A) 26° B) 31° C) 34° D) 39° E) 21°