Why are the moons and rings of Uranus and Neptune believed to be dark?
What will be an ideal response?
Radiation striking ice produces dark organic compounds rich in carbon; it also vaporizes the bright ices that still dominate Saturn's newer rings.
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After filling the 5s level, the next higher level to be filled is
A) 4s. B) 4d. C) 5p. D) 5d. E) 6s.
The ""billiard ball model" of the atom is associated with
a. Bohr. b. Thomson. c. Rutherford. d. Dalton.
Carnot Engine: An ideal Carnot engine is operated between a hot and a cold reservoir. The temperature difference between the two reservoirs is 284°C. If the efficiency of this ideal engine is 24.0%, find the temperature of the cold reservoir in degrees Celsius.
Fill in the blank(s) with the appropriate word(s).
In what sense is the cosmic microwave background evidence for the Big Bang?
A) because Einstein predicted that the universe should be expanding B) because this radiation would have been necessary to cause the Big Bang C) because explosions are always associated with dangerous levels of radiation D) because it was predicted to exist if the Big Bang really occurred