Which of the following choices is an appropriate unit for measuring entropy changes?
a. J/K
b. N/K
c. J/s
d. J/K
d
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The center of the Milky Way is in _____
A) Sagittarius B) Aquarius C) Perseus D) Libra
Consider a primed frame that moves in the +x direction with respect to the unprimed frame. Choose from the answers above and to the right to indicate the direction of the electric field in the primed frame.
A. A B. B C. C D. D E. Toward the viewer F. Away from the viewer T. There is no field of this type
No evidence of impact craters has been found on Venus
Indicate whether the statement is true or false
Because Earth's orbit is slightly elliptical, Earth actually gets closer to the Sun during part of the year. When Earth is closer to the Sun its orbital speed is
A) less than when Earth is farthest away from the Sun. B) the same as when Earth is farthest away from the Sun. C) greater than when Earth is farthest away from the Sun. D) sometimes greater sometimes smaller than when Earth is farthest away from the Sun.