The energy transformed in an inductor during a portion of a cycle
A)
is always positive.
B)
may be positive, negative, or zero.
C)
is always negative.
D)
is always zero.
E)
is never zero.
B
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A ________ stage is a relatively gentle mass-loss event which allows a star to peacefully readjust its structure into a white dwarf configuration
Fill in the blank(s) with correct word
Observed temperature fluctuations in the Cosmic Microwave Background Radiation are
A) millions of kelvins. B) hundreds of kelvins. C) a few kelvins. D) tens of millionths of a kelvin. E) immeasurably small.
Suppose XL > XC. If switch A is closed in the figure below, what happens to the phase angle?
A simple machine allows you to move ________ masses even though you apply ________.
A. larger; smaller force over a longer distance B. smaller; potential energy deficits C. stationary but not moving; many Newtons of force D. smaller; kinetic energy spread over the entire path