The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464?. Which one of the following numbers could be the principal quantum number n of the electron?
A) 0
B) 1
C) 2
D) 3
E) 4
Answer: E
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In strength, the magnetic fields of Uranus and Neptune are:
A) very different, with flopped over Uranus having no field, and Neptune a strong one. B) similar, with both about 100 times stronger than our own. C) even stronger than that of Jupiter. D) perfect fits for the Dynamo theory. E) like Jupiter and Saturn, due to mantles of liquid metallic hydrogen.
The speed of light in a material is 0.50c. What is the critical angle of a light ray at the interface between the material and a vacuum?
A) 30° B) 21° C) 24° D) 27°
Which of the following products of ratios gives the conversion factor to convert miles per hour 
to meters per second 
?
A.
B.
C.
D.
E.
Suppose you want to determine the chemical composition of a distant planet or star. Which of the following will be most useful to have?
A) high spectral resolution B) high angular resolution C) high turbulence D) a radio telescope