The surface of Venus is dominated by ________.
A. recent lava flows
B. scarps
C. large canyons
D. impact craters
E. oceans of sulfuric acid
Answer: A
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Sometimes when you look into a curved mirror you see a magnified image (a great big you!) and sometimes you see a diminished image (a little you). If you look at the bottom (convex) side of a shiny spoon, what will you see?
A) You will either see a little you or a great big you, depending on how near you are to the spoon. B) You will see a little you, upside down. C) You will see a little you, right side up. D) You won't see an image of yourself because no image will be formed. E) You will see a little you, but whether you are right side up or upside down depends on how near you are to the spoon.
Write the conduction equation for radial heat flow of heat through a tube that has inside diameter of Di and outside diameter of D0.
What will be an ideal response?
Consider two concentric spherical shells, one with radius R and one with radius 2R. Both have the same uniformly distributed charge Q. Let E0 ? Q/(4??0R2). Which of the values below is closest to the magnitude of the electric field vector created by these shells at a point P just barely inside the outer shell?
A. zero
D. E0
E. 2E0
F. 4E0
T. Other
Galactic fountains are an important way to explain _____
a. the distribution of metals in and above the plane of the galactic disk b. the nature of dark matter c. the formation of the galactic disk from the first stages of our galaxy d. the generation and support of spiral density waves e. why the spiral arms are active sites of star formation