The wavelength of a particle relates to its
A) momentum.
B) energy levels.
C) quantum number.
D) all of the above
E) none of the above
Answer: A
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Resistors in Combination: What is the equivalent resistance between points A and B of the network shown in the figure?
Fill in the blank(s) with the appropriate word(s).
Which scientists played a major role in overturning the ancient idea of an Earth-centered universe, and about when?
A) Copernicus, Kepler, and Galileo; about 400 years ago B) Aristotle and Copernicus; about 400 years ago C) Newton and Einstein; about 100 years ago D) Huygens and Newton; about 300 years ago E) Aristotle and Plato; about 2,000 years ago
What is meant by a scientific paradigm?
A) a radical change in scientific thought B) a pseudoscientific idea C) a generally well-established scientific theory or set of theories D) a conundrum, or unexplained set of facts E) a historical theory that has been proved inaccurate
When electric current is flowing in a metal, the electrons are moving
A) at nearly the speed of light. B) at the speed of light. C) at the speed of sound in the metal. D) at the speed of sound in air. E) at none of the above speeds.