A 10.0-?F capacitor is plugged into a 110 V rms 60.0-Hz voltage source, with an ammeter in series. What is the rms value of the current through the capacitor?
a. 0.202 A (rms)
b. 0.415 A (rms)
c. 0.626 A (rms)
d. 0.838 A (rms)
e. 0.066 A (rms)
b
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Parallax is
a. the apparent motion of an object due to the motion of the observer. b. the distance between two foci of an ellipse. c. the small circle that the planets slid along in Ptolemy's geocentric universe. d. the circular orbits used in Copernicus' heliocentric universe. e. half the length of the shortest diameter of an ellipse.
What do the size and distribution of small scale temperature variations suggest about the geometry of the Universe?
What will be an ideal response?
A bucket is being lowered by a very light rope with a constant downward velocity. The force that the rope exerts on the bucket must be
A) equal to the force that Earth exerts on the bucket. B) greater than the force that Earth exerts on the bucket. C) less than the force that Earth exerts on the bucket.
An object weighs 432 N on the surface of the earth. The earth has radius R. If the object is raised to a height of 3R above the earth's surface, what is its weight?
A) 108 N B) 48.0 N C) 27.0 N D) 305 N E) 144 N