What is the particle referred to as a WIMP?
a. the result of a neutrino oscillation
b. a hypothetical particle left over from the Big Bang
c. a hypothetical particle in the MOND theory
d. none of the above
b
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An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?
a.
straight north
b.
straight east
c.
straight south
d.
straight west
e.
straight up, directly overhead
The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force
The waves with the largest frequency are __________ and _________.
Which of the following is true of ancient constellations?
A) Out of all the ancient constellations, over 150 constellations are still in use. B) Ancient constellations were a grouping of bright and fainter stars. C) Ancient constellation boundaries, when they were defined at all, were only approximate. D) All the regions of the northern and southern sky were identified as constellations by ancient astronomers.
Entropy: What is the change in entropy of the ice when a 0.050-kg ice cube at 0°C melts? The latent heat of fusion for water is 80 cal/g.
Fill in the blank(s) with the appropriate word(s).