Venus has a higher average surface temperature than Mercury. Why?
A) because its surface is heated by an extreme greenhouse effect
B) because it is closer to the Sun
C) because its surface is covered with hot lava from numerous active volcanoes
D) because its slow rotation gives it more time to heat up in sunlight
A) because its surface is heated by an extreme greenhouse effect
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Briefly explain Earth's moon
What will be an ideal response?
Uranus and Neptune do not contain liquid metallic hydrogen because they
a. are not massive enough. b. do not contain enough hydrogen. c. rotate too slowly. d. are too far from the sun. e. have magnetic fields that are much too weak.
The frequency of a note one octave higher in pitch than a 440-Hz note is
A) 1760 Hz. B) 880 Hz. C) 440 Hz. D) 220 Hz. E) 110 Hz.
A +7.00 ?C point charge and -9.00 ?C point charge are placed along the x-axis at x = 0.000 cm and x = 40.0 cm, respectively
Where must a third charge, q, be placed along the x-axis so that it does not experience any net electric force due to the other two charges? A) -0.200 m B) 2.99 m C) -0.187 m D) -2.99 m E) 0.187 m