What is the flash point of gasoline?
a. 10°F (-12°C)
b. -43°F (-41°C)
c. 23°F (-5°C)
d. -23°F (-30°C)
Answer: b. -43°F (-41°C)
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The third law of thermodynamics tells us that no substance can
A. reach the bottom of the kelvin scale of temperature. B. ever stop radiating energy. C. both of these D. neither of these
Lithostratigraphic correlations are made on the basis of similarity of rock type over wide areas. Indicate whether the statement is true or false
Glacial surges may be associated with
A) soft bed below the glacier. B) lubrication from meltwater. C) water pressure under the glacier. D) water pressure, soft bed, or lubrication.
Given that annual crop yields in each of the study plots were approximately 4 metric tons/ha, what is the ratio of soil lost to crop yield under conventional tillage?
a. 64,000 kg soil/1 ton crop yield b. 4,000 tons crop yield/1 kg soil c. 16,000 kg soil/4 tons crop yield d. 4,000 kg soil/1 ton crop yield