Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 MHz is
A) 0.3 m.
B) 3.0 m.
C) 30 m.
D) 300 m.
E) none of the above
B
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Excess amounts of CO2 in the atmosphere have led to ocean ____________ as the oceans absorb CO2 and convert it to H2CO3.
Fill in the blank(s) with the appropriate word(s).
How has the distribution of fossil fuels in Southwest Asia and North Africa affected economic development and standards of living in the area? Use specific examples in your answer.
What will be an ideal response?
Discuss the contrasting development models put forward by the United States and Europe with that of China. How will Chinese influence in the region alter the course of development for Sub-Saharan Africa?
What will be an ideal response?
Which of the following is not true of the rings of Saturn
A) The faintest outer rings are closely associated with the moon Enceladus. B) They are remnants of the formation of the planet and have not changed over time. C) They are mostly very thin, forming a large planar disk. D) They are comprised of various sized objects ranging from dust to moon-size objects.