Which of the following statements correctly describes the relationship between stars and constellations?
a. Only stars close to the ecliptic (the Earth's orbital plane) are located in constellations.
b. Every star is located in a constellation.
c. Only the brighter stars are in constellations.
d. Only those stars that were visible to the ancient Greeks are located in constellations.
B
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How does the prevailing model for activity explain the hot ejected gas seen in active galaxies?
A. It is energy released as matter is funneled into a black hole. B. It is gas evaporating from an accretion disk around a massive black hole. C. It is shot out of a black hole. D. It is material trapped between two orbiting black holes being gravitationally scattered. E. It is a rip in space-time from which Hawking radiation is released.
A force-carrying particle is a(n)
a. lepton. b. baryon. c. meson. d. intermediate (or gauge) boson. e. hadron.
A series RLC circuit has a resistance of 500
and inductance of 20.0 mH, and a capacitance of 2.00
F The power source provides a voltage of v = (170 sin(377t))V. What is the impedance of this circuit?
A. 0.402 k 
B. 1.33 k 
C. 1.25 k 
D. 1.41 k
E. 2.15 k 
In the symbol for the Hubble type of a galaxy, SBc, the "B" denotes what?
A.) Tightly wound spiral arms. B.) The presence of a bar. C.) The presence of a ring. D.) A large bulge component. E.) Loosely wound spiral arms.