Two electric charges each equal to -Q, are separated by a distance d. If you make a graph of the electric potential as a function of the distance along the line connecting the two charges, the point exactly midway between the two charges would
A) be a relative maximum.
B) be a relative minimum.
C) be neither a relative maximum nor a relative minimum.
D) oscillate between being a relative maximum and a relative minimum.
A
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The intensity of cosmic rays bombarding the Earth's surface is greatest at
A) the poles. B) mid-latitudes. C) the equator. D) no particular locations.
the majority of the stars we see in the sky are
What will be an ideal response?
What do halo stars do differently from disk stars?
A) Halo stars orbit the galactic center with many different inclinations, while disk stars all orbit in nearly the same plane. B) Halo stars remain stationary, quite unlike disk stars that orbit the galactic center. C) Halo stars explode as supernovae much more frequently than disk stars. D) Halo stars orbit the center of the galaxy at much lower speeds than disk stars.
Which of the following statements is true of Uranus?
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