Capacitance: If the result of your calculations for a quantity has SI units of C2 ? s2/(kg ? m2), that quantity could be
A. an electric potential difference.
B. a dielectric constant.
C. an electric field strength.
D. a capacitance.
E. an electric potential energy.
Answer: D
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The text states that luminous matter in the Milky Way seems to be much like the tip of an iceberg. This refers to the idea that
A) dark matter represents much more mass and extends much further from the galactic center than the visible stars of the Milky Way. B) luminous matter emits white light, much like the light reflected from icebergs. C) black holes are much more interesting than ordinary stars that give off light. D) the luminous matter of the Milky Way is essentially floating on the surface of a great sea of dark matter.
The accelerations possible for a ball on an inclined plane
A) range from zero to g. B) range from g to infinity. C) have no limit.
Pluto, discovered in 1930, was "demoted" to "dwarf planet" status in 2006 simply because it is much smaller than the other planets.
a. true b. false
An electron in a cathode ray tube is accelerated through a potential difference of 10 kV. What kinetic energy does the electron gain in the process? (e = 1.6 × 10^-19 C)
a. 8.0 × 10^-16 J c. 8.0 × 10^22 J b. 1.6 × 10^-15 J d. 1.6 × 10^-16 J