The ________ that is affecting the motion of the Local Group is believed to be a yet unseen ________.
A. Great Attractor; cluster of superclusters
B. Great Attractor; super massive black hole
C. Great Wall; super massive black hole
D. Great Wall; Great Attractor
Answer: A
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A uniform charge density of 500 nC/m3 is distributed throughout a spherical volume (radius = 16 cm). Consider a cubical (4.0 cm along the edge) surface completely inside the sphere. Determine the electric flux through this surface.
A. 7.1 N ? m2/C B. 3.6 N ? m2/C C. 12 N ? m2/C D. 19 N ? m2/C E. 970 N ? m2/C
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A) magnetic field B) electric field C) both of these D) none of the above
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