Consider a uniform electric field of 50. N/C directed toward the East. If the voltage measured relative to ground at a given point in the field is 80. V, what is the voltage at a point 1.0 m directly East of the point?
A) 15. V
B) 30. V
C) 0.15 kV
D) 30. kV
E) impossible to calculate from the information given
B
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Observations indicate that it takes Saturn longer than Jupiter to complete one orbit about the Sun. This is in agreement with which of Kepler's laws?
A. First B. Second C. Third D. Fourth
A person stands between two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other
What type of interference does the person perceive? A) constructive B) destructive C) both constructive and destructive D) neither constructive nor destructive
The equivalent resistance of resistors connected in series in a circuit is
A) often less than the resistance of the lowest resistor. B) always less than the resistance of the lowest resistor. C) usually half the value of the lowest resistor. D) none of the above
In an AC circuit, the ratio of average current to maximum current is:
a. zero. b. 0.5. c. 0.707. d. 1.0.