The emergence of each of the four fundamental forces during the big bang was similar to
A) the collision of two heavy nuclei, such as two lead nuclei.
B) the gravitational collapse of matter when a new star forms.
C) a nuclear reaction.
D) a change of the "state" of a material substance, such as freezing.
E) a supernova explosion.
D
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In the Grand Unified Theory, the superforce was:
A) only dark energy. B) a union of the weak and electromagnetic forces. C) a union of all matter and energy. D) a union of the gravitational, strong and weak nuclear, and electromagnetic forces. E) only in effect at low energies.
Triton, the largest moon of Neptune was probably once
A) a Kuiper Belt Object B) a planet C) an asteroid D) a comet
Distinguish between a transverse wave and a longitudinal wave. Give examples of each
What will be an ideal response?
A charged particle moves in a region of uniform magnetic field along a helical path (radius = 5.0 cm, pitch = 12 cm, period = 5.0 ms). What is the speed of this particle as it moves along this path?
a. 67 m/s b. 26 m/s c. 63 m/s d. 24 m/s e. 87 m/s