The atmosphere of Saturn is composed mostly of
A) methane and ammonia.
B) carbon dioxide and ethane.
C) hydrogen and helium.
D) hydrogen sulfide and ammonia.
E) nitrogen and oxygen.
C
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A 22-A current flows into a parallel combination of 4.0-?, 6.0-?, and 12-? resistors. What current flows through the 12-? resistor?
A) 18 A B) 11 A C) 7.3 A D) 3.7 A
Based solely on its distance from the Sun, we would expect the surface of Venus to be
A) colder than the Earth such that water would freeze B) warmer than the Earth, but not so warm that liquid water could not exist C) roughly the same temperature as the Earth so that water would mostly be in liquid form D) very much warmer than the Earth such that liquid water could not exist on the surface
If the zeroth law of thermodynamics were not valid, which of the following could not be considered a property of an object?
A. Pressure B. Center of mass energy C. Internal energy D. Momentum E. Temperature
What is the approximate nuclear radius of an isotope of sodium with 11 protons and 12 neutrons?
What will be an ideal response?