In the greenhouse effect, what is the direct cause of extra heating of the Earth's surface?
A) Additional carbon dioxide makes the atmosphere more opaque to infrared light, trapping part of the blackbody radiation that would normally escape into space.
B) Additional carbon dioxide makes the atmosphere more transparent to infrared light, allowing the sun to more directly heat the surface.
C) Additional carbon dioxide makes the atmosphere denser, and thus heat passes through it more slowly.
A
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In the context of Schwarzschild black holes, the _____ is the boundary between the isolated volume of space-time and the rest of the Universe
A) bridge fragment B) event horizon C) pulsating point D) status curve
Determine ? when I = 0.50 A and R = 12 ?.
A. 12 V B. 24 V C. 30 V D. 15 V E. 6.0 V
Household circuits are wired in ________
a. series b. parallel c. both series and parallel d. neither series nor parallel
When a ferromagnetic material that has been magnetized is brought to a temperature greater than the Curie temperature, what happens to its residual magnetism?
a. Nothing happens to the residual magnetism. b. The residual magnetism disappears. c. The residual magnetism reaches it's highest value. d. All the magnetic domains causing magnetism become a single domain. e. The material of the magnet melts causing currents that are magnetic.