The absence of a magnetic field on Venus probably stems from its:
A) nearness to the Sun.
B) extremely thick atmosphere.
C) slow rotation.
D) high surface temperatures.
E) lower density than Earth, suggesting an absence of an iron core.
C
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The air in this room has
A) mass. B) weight. C) energy. D) all of the above E) none of the above
The Huygens probe took numerous pictures as it descended to Titan's surface in 2005. What did the pictures show?
A) primitive life forms B) a densely cratered surface C) lava flows of molten basalt D) features or erosion, including what appeared to be dry river valleys and lakebeds
Briefly describe how the greenhouse effect makes a planetary surface warmer than it would be otherwise
What will be an ideal response?
In a certain region, the electric potential due to a charge distribution is given by the equation V(x,y) = 2xy - x2 - y, where x and y are measured in meters and V is in volts
At which point is the electric field equal to zero? A) x = 0.5 m, y = 0.5 m B) x = 0 m, y = 0 m C) x = 1 m, y = 0.5 m D) x = 1 m, y = 1 m E) x = 0.5 m, y = 1 m