The major source of CO pollution is
a. combustion for electrical generation.
b. industry.
c. domestic heating.
d. transportation.
d
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At midnight, on a clear and moonless night, the number of stars that are distinctly visible to the eye is in the range
A) 2000-5000. B) 20,000-50,000. C) 200,000-500,000. D) 2 million-5 million.
A thermometer is made such that the freezing point of water is defined to be 60.0°H and the boiling point of water at sea level is defined to be 520°H. What is absolute zero on the H scale?
A) 0.6°H B) -36°H C) -980°H D) -1256°H E) -1196°H
If you are using a text editor to create a webpage, you specify a color for a webpage element by entering the color depth.
Answer the following statement true (T) or false (F)
If 1.0 m3 of concrete weighs 5 × 10^4 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? (The compression strength of concrete is 1.7 × 10^7 N/m2.)