This event recurs and happens when one of the companions in the binary system is a white dwarf.
A. Pulsar
B. Type I supernova
C. Nova
D. Type II supernova
E. None of these choices is correct.
Answer: C
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As a white dwarf cools its radius will not change because
a. pressure due to nuclear reactions in a shell just below the surface keeps it from collapsing. b. pressure does not depend on temperature for a white dwarf because the electrons are degenerate. c. pressure does not depend on temperature because the white dwarf is too hot. d. pressure does not depend on temperature because the star has exhausted all its nuclear fuels. e. material accreting onto it from a companion maintains a constant radius.
Nuclear power reactors cause less atmospheric pollution that fossil fuel power plants and produce no greenhouse gasses
A. true B. false
A molecule in a uniform ideal gas can collide with other molecules when their centers are equal to or less than
A.
B.
C.
D.
E.
diameters away from its center.In addition to 1 m = 39.37 in., the following exact conversion equivalents are given: and 1 min = 60 s. If a particle has a velocity of 8.4 miles per hour, its velocity, in m/s, is closest to
A) 3.8 m/s. B) 3.0 m/s. C) 3.4 m/s. D) 4.1 m/s. E) 4.5 m/s.