From a location in the United States of America, a star is observed to be rising due East. Where will this star be located 6 hours later?
A) Directly overhead
B) High in the Northern sky
C) High in the southern sky
D) Setting due West
E) The location of the star cannot be determined from the information given.
C
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Two objects are dropped from a bridge, an interval of 1.0 s apart, and experience no appreciable air resistance. As time progresses, the DIFFERENCE in their speeds
A) increases. B) remains constant. C) decreases. D) increases at first, but then stays constant. E) decreases at first, but then stays constant.
Which has the highest index of refraction?
a. red b. green c. yellow d. violet e. indigo
The moons of Mars are
A. too small to pull themselves round. B. Phobos and Deimos. C. captured asteroids. D. All of these choices are correct.
If an object is accelerating, it must therefore undergo
A) a change in velocity. B) a change in direction. C) a change in speed.