What are the latitude and longitude of a place on Earth directly opposite Columbia, South Carolina, which is at 81°W, 34°N?
99°E, 34°N
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If the period of a body's orbit is doubled, then the distance from the host has ___________. Assume the units of period are years and the units of distance are A.U. Choose the best answer
a. doubled b. halved c. stayed the same d. increased by about 1.5 times
A waiter in a restaurant fills a pitcher full of water and ice so that water would spill out if any more were added. As the ice starts to melt
a. the water level in the pitcher falls. b. the water level in the pitcher remains the same. c. water starts to flow out the spout of the pitcher. d. the pressure on the bottom of the pitcher decreases. e. the pressure on the bottom of the pitcher increases.
What wavelength corresponds to the n = 2 ? n = 1 transition in singly-ionized helium?
A) 15.2 nm B) 22.8 nm C) 4.56 nm D) 11.4 nm E) 30.4 nm
If you hold one end of a metal bar against a piece of ice, the end in your hand will soon become cold. Does cold flow from the ice to your hand?
A. yes B. in some cases, yes C. no D. in some cases, no