A particle with __________ obeys the Pauli exclusion principle
Fill in the blank(s) with correct word
half-integral spin
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A granite block is mostly empty space because the atoms in the granite are
A) in perpetual motion. B) mostly empty space themselves. C) held together by electrical forces. D) not as close together as they could be. E) invisible.
As a spaceship moving toward you at half the speed of light fires a probe toward you, relative to itself at 0.7 the speed of light, you see the probe approaching at about
A) 0.70c. B) 0.87c. C) 0.89c. D) 0.92c. E) 0.96c.
The rest energy of an electron and its antiparticle, a positron, is 0.511 MeV. In order to produce an electron-positron pair, a gamma ray must have an energy larger than 1.022 MeV because of
a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.
An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?
(F) 6.30 m (G) 17.5 m (H) 27.2 m (J) 40.0 m