At what two celestial locations do the celestial equator and ecliptic coincide?
a. winter solstice and summer solstice
b. vernal equinox and autumnal equinox
c. they coincide at all points because they are the same.
d. north celestial pole and south celestial pole
e. zenith and east point
B
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Mars has two moons that are most similar in character to
A) small asteroids. B) comets. C) Earth's Moon. D) particles in the rings of Saturn.
The net force on a moving object suddenly becomes zero. The object then
A. stops abruptly. B. stops during a short time interval. C. changes direction. D. continues at constant velocity. E. slows down gradually.
The open clusters were a population of relatively young stars, so where would you expect to see them from?
A.) In the halo with globular clusters. B.) In the disk. C.) In the bulge. D.) Only around the Sun. E.) Behind us.
A coulomb of charge passing through a 6-V battery acquires
A) 6 joules. B) 6 amperes. C) 6 ohms. D) 6 watts. E) 6 newtons.