An object is dropped from rest on the planet Jupiter. At the end of 1 second, it has fallen 8 m and is moving at 16 m/s. The total distance fallen after [i.e., at the end of] two seconds will be
A) 64 m.
B) 32 m.
C) 24 m.
D) 16 m.
E) None of the above.
B
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Which of the following is not caused by side branches on a polymer?
(a) Decreased density (b) Decreased transparency (c) Decreased crystallinity (d) Decreased hardness
We have seen that two monochromatic light waves can interfere constructively or destructively, depending on their phase difference. One consequence of this phenomena is
A) the colors you see when white light is reflected from a soap bubble. B) a rainbow. C) the appearance of a mirage in the desert. D) the way in which polarized sunglasses work. E) the formation of an image by a converging lens, such as the lens in your eye.
Spherical Mirrors: A convex mirror has a focal length of magnitude f. An object is placed in front of this mirror at a point 
f from the face of the mirror. The image will appear
A. behind the mirror. B. upright and reduced. C. upright and enlarged. D. inverted and reduced. E. inverted and enlarged.
How does the Sun generate energy today?
A) nuclear fission B) nuclear fusion C) chemical reactions D) gravitational contraction E) gradually expanding in size