Which of the following is not a piece of evidence supporting the idea that Pluto is a large comet of the Kuiper belt?
A) Pluto's composition appears to match that of other known Kuiper belt comets.
B) Triton, which must once have orbited the Sun before being captured by Neptune, is significantly larger than Pluto.
C) Pluto grows a coma and a long tail when it is at the point in its orbit closest to the Sun.
D) Pluto's orbit is very similar to the orbits of other known Kuiper belt comets.
E) Pluto is not the largest object orbiting in the region of the Kuiper belt.
C
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Which of the following methods has been the MOST successful in detecting extrasolar planets around other star systems?
A) regular changes in the positions of the parent stars with respect to more distant stars as they move across the sky B) detection of brightness changes in a star as a planet passes in front of it C) detection of Doppler shifts in the spectra of the parent stars D) detection of reflected starlight
The oscillation of the 2.0-kg mass on a spring is described by 
where x is in centimeters and t is in seconds. What is the force constant of the spring?
A.
B.
C.
D.
E.
N/mLaser light is ________ and monochromatic, and usually of much ________ intensity than the light from the light bulb
a. coherent b. incoherent c. lower d. higher
When a warm air mass moves into a region occupied by a cold air mass, the contact zone is called
A) a cold front. B) a warm front. C) a stationary front. D) an occluded front.