Which of the paths shown represent unbound orbits?
A) 1 only
B) 2 only
C) 3 only
D) both 2 and 3
E) There is no such thing as an unbound orbit.
D) both 2 and 3
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When ice water at 0°C is heated
A) thermal expansion occurs. B) thermal contraction occurs. C) both occur until 4°C is reached
Starting from rest, a car travels 1350 meters in 1.00 minute. It accelerated at 1.0 m/s2 until it reached its cruising speed. Then it drove the remaining distance at constant velocity. What was its cruising speed?
Although it hasn't been observed (yet), why do astronomers think that the Milky Way is embedded in a halo of dark matter?
A. Due to its large size, the light from stars on the other side of the Milky Way has not reached us yet. B. Stars in the outer regions of the Galaxy are orbiting faster than expected. C. Astronomers have detected neutrinos from unseen sources. D. Theory predicts that there should be more black holes than we've so far detected.
Which of the following represents the shortest distance?
a. One parsec b. One astronomical unit c. One light-year d. One right ascension