One philosophical difference between Newtonian and quantum physics is
A) nature is predictable according to Newtonian physics, but nature is unpredictable according to quantum theory.
B) Newtonian physics is unable to deal with such abstractions as energy, whereas quantum physics is able to deal with these abstractions.
C) Newtonian physics is now known to be incorrect, but scientists have proven that quantum physics is absolutely correct.
D) nature is unpredictable according to Newtonian physics, but nature is predictable according to quantum theory.
E) Newtonian physics emphasizes the measurement process whereas quantum physics recognizes that the measurement process should not be included in physical theories.
A
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If a volume of air is warmed, it expands and tends to
A) warm. B) cool. C) neither of these
Is the "sports wave" that crowds perform at sports arenas really a "wave" as physicists define the term?
A) Yes, because a disturbance does move from one point to another without a corresponding transfer of matter, and this is what we mean by a "wave" in physics. B) Yes, because energy does move through the crowd from one point to another, and this is what we mean by a "wave" in physics. C) No, because there is no real physical connection between the different parts of the medium. D) No, because spectators have free will--that is, they are not really forced to stand up and participate. E) No, for both the reasons stated in answers C and D.
A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. What speed does the proton gain? (e = 1.60 × 10-19 C , mproton = 1.67 × 10-27 kg)
A) 2.2 × 105 m/s B) 1.1 × 105 m/s C) 9.6 × 105 m/s D) 3.1 × 105 m/s
A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all directions. What is the intensity level in decibels at a distance 5.00 m from the dog? The threshold of human hearing is 1.0 × 10-12 W/m2
A) 61 dB B) 63 dB C) 65 dB D) 68 dB