The Mesozoic era is known as the age of the
A) dinosaur.
B) reptile.
C) fishes.
D) synapsids.
Answer: B
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Express (2.2 × 106)-1/2 in scientific notation
A) 6.7 × 10-4 B) 1.5 × 103 C) 1.5 × 10-5 D) 1.5 × 104
Write the node equations for describing heat transfer through the buried waste shown in Figure 2-67.
What are all the black spots on this object?
A) volcanoes on Jupiter's moon Io B) methane lakes on Saturn's moon Titan C) impact craters on Uranus's moon Miranda D) wind streaks on Neptune's moon Triton E) giant cliffs on the planet Mercury
Two boxes of the same mass sit on a rough floor. These boxes are made of the same kind of cardboard and are identical except that one is twice as large as the other. If it takes 200 N to start moving the smaller box, how much force does it take to start moving the larger one?
A. Still 200 N B. 400 N C. 800 N D. It depends (specify)