The power factor of an RLC series circuit _______ at resonance.
A. is one
B. has a value that depends upon the ratio of inductive reactance to impedance
C. has a value that depends upon the ratio of capacitive reactance to impedance
D. is zero
D. is zero
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In the periodic table, the horizontal rows are called ________ and the vertical columns are called ________
Fill in the blank(s) with correct word
A boy throws a ball to another boy who throws it back with half the original speed. What is the ratio of the final kinetic energy to the initial kinetic energy of the ball?
A) 0.25 B) 0.50 C) 2.00 D) 0.75 E) 1.0
Unlike the ultraviolet photons originally emitted by the embedded stars of an emission nebula, the photons emitted by the recombination of electrons with atoms:
A) do not escape the nebula. B) escape the nebula. C) are re-absorbed by neutral hydrogen atoms. D) bounce around inside the nebula. E) are scattered by the dust particles.
The name of the average distance from Earth to the Sun is one ____________________
Fill in the blank(s) with correct word