If you wish to spear a small blue fish with a red laser beam, you should compensate for refraction and aim your laser
A) directly at the sighted fish.
B) above the sighted fish.
C) below the sighted fish.
Answer: C
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Which of the following polymers cannot be joined by fusion welding?
(a) PE (b) PVC (c) Epoxy (d) PTFE
Europa has few craters because
a. it is protected from impacts by Jupiter's gravity. b. it does not have a solid surface. c. it has erased craters nearly as fast as they have formed. d. its surface is not strong enough to support craters. e. it keeps one face always pointed toward Jupiter which screens it from incoming meteorites.
Hurricanes derive their energy from ______________
Fill in the blank(s) with correct word
The assumption of homogeneity states that
a. the Universe looks the same at all epochs. b. the Universe looks the same from all locations over sufficiently great distances. c. the Universe looks the same in all directions over sufficiently great distances. d. the Universe looks the same at all epochs, the Universe looks the same from all locations over sufficiently great distances, and the Universe looks the same in all directions over sufficiently great distances. e. None of the other choices are correct.