How do the energy level spacings for a particle in a box change when the box is made longer?
A. The spacings do not change.
B. The spacings increase.
C. The spacings decrease.
D. There is insufficient information to answer this question.
C. The spacings decrease.
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Spectral lines shifted toward higher frequencies are called ________.
A. red shifted B. blue shifted C. Lines cannot be shifted toward higher frequencies.
Can two microscopic [or quantum] particles be entangled even when they are exerting no forces on each other?
A) Yes, because they can still communicate with each other by means of electromagnetic radiation. B) Yes, they could be entangled but so far apart as to exert no significant forces on each other. C) No, because entanglement occurs only by means of the electromagnetic force and the other fundamental forces. D) No, because in order for a particle to be trapped in the field of another particle, it must feel the second particle's force field. E) No, because the psi field is actually a force field.
In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?
a. 0; 0 b. 0; 2.00 m/s c. 2.40 km, east; 0 d. 2.40 km, east; 2.00 m/s, east e. 2.40 km, west; 2.00 m/s, west
In an AC circuit, the ratio of average current to maximum current is:
a. zero. c. 1.0. b. 0.707. d. 0.5.