Resistance and Resistivity: What is the resistance of 1.0 m of a solid cylindrical metal cable having a diameter of 0.40 inches and a resistivity of 1.68 × 10-8 ? ? m?
A. 0.00012 ?
B. 0.00021 ?
C. 0.0012 ?
D. 0.0021 ?
Answer: B
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On a clear night when an observer in Los Angeles sees a first quarter Moon an observer in London would see
a. a full moon. b. a first quarter moon. c. a new moon. d. a third quarter moon. e. any of the above, depends on the time
Spectral Series: What value of n corresponds to a wavelength of 91.7 nm in the Lyman series?
A. 1 B. 3 C. 5 D. 9 E. 13
The maximum voltage of an ac signal is 8.0 V. What is the rms value of this voltage?
A) 2.8 V B) 5.7 V C) 6.2 V D) 4.0 V E) 16.0 V
Two forces are the only forces acting on a 3.0-kg object which moves with an acceleration of 3.0 m/s2 in the positive y direction. If one of the forces acts in the positive x direction and has a magnitude of 8.0 N, what is the magnitude of the other force?
a. 12 N b. 14 N c. 16 N d. 18 N e. 22 N