Suppose you have a time-keeping device that always reads precisely 12:00 when the Sun crosses your meridian. What kind of time is this clock keeping?
A) apparent solar time
B) mean solar time
C) standard time
D) universal time
A) apparent solar time
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Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. The kinetic energy of the crate is __________
Fill in the blank(s) with correct word
If a surface is illuminated by magenta light and the red is absorbed, then the color of the surface will appear as
A. green. B. yellow. C. blue. D. red.
According to their rotation curves, most spiral galaxies:
A) rotate as a solid body. B) rotate counterclockwise. C) have decreasing rotational speeds with increasing distance. D) contain dark matter. E) contain dark energy.
All of the following are involved in carrying energy outward from a star's core except
A) convection. B) radiative diffusion. C) conduction. D) neutrinos.