If we know the average separation and period of revolution for a binary system, we can then measure
A) the actual luminosity of each star.
B) the actual mass of both individual stars.
C) their absolute magnitudes.
D) the actual sizes of the two stars.
E) the total mass of the system.
E
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As frequency is varied in an RLC series circuit, resonance is reached when
A. the impedance becomes zero. B. the inductive reactance is equal to the capacitive reactance. C. the sum of the inductive and capacitive reactances is equal to the resistance. D. the capacitive reactance is equal to the resistance. E. the inductive reactance is equal to the resistance.
In ________ models, the Sun is assumed as the center of the solar system.
A. Heliocentric B. Epicyclic C. Anthropomorphic D. Geocentric
What is the largest satellite (moon) in the Solar System?
A. Saturn's moon, Titan B. Neptune's moon, Triton C. Jupiter's moon, Ganymede D. Earth's moon
Into the gap between the plates of a parallel plate capacitor of capacitance 
a slab of metal is inserted halfway between the plates filling one fourth of the gap between the plates. What is the resulting new capacitance?
A.
B.
C.
D.
E.
