If the Earth rotated on its axis more slowly than it does now:
A) its months would be longer
B) its years would be shorter
C) its days would be shorter
D) its days would be longer
E) its months would be shorter
Ans: D) its days would be longer
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To see his full height, Blinky Bill who is 1 meter tall needs a mirror that is at least
A) 0.33 m tall. B) 0.50 m tall. C) 0.75 m tall. D) 1 m tall. E) depends on distance from the mirror.
Spherical Mirrors: A convex spherical mirror has a focal length of magnitude 20 cm. If an object is placed 10 cm in front of the mirror on the mirror's axis, where is the image located?
A. 20 cm behind the mirror B. 20 cm in front of the mirror C. 6.7 cm behind the mirror D. 6.7 cm in front of the mirror
A beam of light (f = 5 × 1014 Hz) enters a piece of glass (n = 1.5). What is the frequency of the light while it is in the glass?
A) 5 × 1014 Hz B) 7.5 × 1014 Hz C) 3.33 × 1014 Hz D) 5 × 1013 Hz E) 7.5 × 1013 Hz
When temperature is plotted against entropy, the area under the process path is equal to
A) the work done. B) the heat transferred. C) the change in internal energy. D) the heat added less the work done.