Suppose we have a quantum system of an unknown type. We find that a certain amount of energy ?E moves this system from its lowest possible energy to its second-lowest energy, but 
?E is required to get it to its next higher energy. Is this quantum system a quanton in a box, a hydrogen atom, or a simple harmonic oscillator?
A. A quanton in a box.
B. A hydrogen atom.
C. A simple harmonic oscillator.
D. The stated facts are inconsistent with all of these models.
B. A hydrogen atom.
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Suppose we have a certain length of wire that we would like to wind around a cylindrical form in a single layer of closely spaced turns to make it more compact, and we would like to minimize the inductance of the resulting coil. All the available forms have a small enough radius that the length of the coil will be much larger than its radius. Given this, we should choose the form with
A. The smallest radius. B. The largest radius. C. Any radius (the inductance will be the same). D. One needs more information to answer the question.
What is the orbital angular momentum quantum number for a d subshell?
A. 10 B. 7 C. 4 D. 3 E. 2
Applications to Astronomy: The appearance of the great range of brightness among stars is due to
A. only to the differences in the amount of light different stars emit. B. only to the differences in the distances of stars from us. C. both of these differences indicated. D. None of these answers.
Phase Angles: At 1.00 kHz, the phase angle of an RLC series circuit with an inductive reactance of 200 ?, a resistance of 200 ? and a certain capacitor is 40.0°. What is the capacitance of the capacitor in this circuit?
A. 1.95 ?F B. 2.95 ?F C. 3.95 ?F D. 4.95 ?F E. 5.95 ?F