A parsec is slightly more than 200,000 AU
Indicate whether the statement is true or false
TRUE
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A 1000-kg car approaches an intersection traveling north at 20.0 m/s. A 1200-kg car approaches the same intersection traveling east at 22.0 m/s
The two cars collide at the intersection and lock together. Ignoring any external forces that act on the cars during the collision, what is the velocity of the cars immediately after the collision? A) 21.1 m/s in a direction 52.8° east of north B) 15.1 m/s in a direction 52.8° east of north C) 21.1 m/s in a direction 47.7° west of south D) 29.7 m/s in a direction 47.7° east of north E) 21.1 m/s in a direction 47.7° east of north
The impact of meteorites on the Moon has caused
a. craters only. b. rays only. c. rills only. d. both rays and craters.
What centripetal force does an 60-kg passenger experience when seated 12 m from the center of a Ferris wheel that rotates once every 4p seconds?
a. 484 N c. 914 N b. 180 N d. 240 N
In general, the spectral lines of molecules are
A) more complex than those of atoms. B) less complex than those of atoms. C) only absorption lines. D) the same as the atoms they contain. E) nonexistent.