A spherically symmetric planet has four times the earth's mass and twice its radius. If a jar of peanut butter weighs 12 N on the surface of the Earth, how much would it weigh on the surface of this planet?
A) 3.0 N
B) 6.0 N
C) 12 N
D) 24 N
E) 36 N
C
Physics & Space Science
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The electron drift speed 
A. A B.B C.C
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An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is ________ and the orientation of the image is ________.
Fill in the blank(s) with the appropriate word(s).
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How much time is there between when a star rises and when it sets?
A. about twelve hours B. more than twelve hours C. less than twelve hours D. It depends on the star.
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