Through the year, the Sun moves eastward among the stars following a line called the _____, the apparent path of the Sun among the stars
A) zenith
B) nadir
C) ecliptic
D) zodiac
C
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Two twin sisters, Gwen and Jackie, are both 20 years old in the year 2020. Jackie takes off on a round-trip to Vega, 25 light-years away. She travels at an average speed very close to the speed of light—say, 0.9999c
According to Gwen back on Earth, about how long does it take Jackie to reach Vega? A) about a month B) about 10 years C) about 25 years D) about 100 years
The position of an object is given as a function of time as x(t) = (3.00 m/s)t + (2.00 m/s2)t2. What is the displacement of the object between t = 4.00 s and t = 5.00 s?
A) 8.00 m B) 5.00 m C) 21.0 m D) 65.0 m E) 44.0 m
The figure is a graph of the vertical velocity versus time for an elevator. Solve graphically for the height of the elevator above the starting point at t = 20 s.
A. 4.0 m
B. 16.0 m
C. 0.0 m
D. 8.0 m
In the development of a terrestrial planet, the stage of ___________ occurred when molten rock flowed through fissures and filled deep basins
a. differentiation b. cratering c. glaciation d. accretion e. flooding