As a block slides down a 33° frictionless incline, its acceleration
a. decreases with distance.
b. remains constant.
c. is greatest at the bottom of the incline.
d. is greatest at the top of the incline.
b
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Your rearview mirror states "OBJECTS IN THIS MIRROR ARE CLOSER THAN THEY APPEAR." The mirror is
A. convex B. concave C. planar
What is the focal point of a convex or concave mirror?
a. The point at the center of the mirror. b. The point halfway between the mirror and the center of the sphere that the mirror is part of. c. The point at the center of the sphere that the mirror surface is part of. d. The point halfway between the mirror and sphere center for a convex mirror, but at the center of the sphere for a concave mirror. e. The point at the center of the object the mirror is reflecting.
If the Moon rose tonight at 6 PM, then tomorrow it will rise about
A) the same time. B) 7 PM. C) 5 PM. D) dawn. E) midnight.
According to the second law of thermodynamics,
A) the total entropy of all the participants in any physical process cannot decrease. B) thermal energy flows spontaneously from hot objects to cold objects. C) energy process that uses thermal energy to do work must have a thermal energy exhaust. D) All of the above. E) None of the above.