Radiant energy from the Sun reaches the Earth at a rate of
When 30.0% of the radiant energy is reflected and 70.0% absorbed, the average temperature of the Earth's atmosphere is 253 K or -20.0
If the atmosphere reflected 20.0% and absorbed 80.0% of the solar radiant energy, then what is the average temperature of the Earth's atmosphere?
A. -10.1
B. -11.4
C. -12.3
D. -14.5
E. -17.4
B. -11.4
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The angle that the refracted ray in the water makes with the normal is closest to: A) 37° B) 42° C) 47° D) 32° E) 27°
You need 14 W of infrared laser light power with wavelength 1270 nm to bore a hole in a diamond
How many downward atomic transitions per second must occur in the laser if all of them result in light directed onto the diamond? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s) A) 8.9 × 1019 B) 8.9 × 1018 C) 5.9 × 1019 D) 2.7 × 1018
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