In a well in an unconfined aquifer, the highest level that water can rise to is
A) the level of the water table.
B) just below the level of the water table.
C) to the top of the well.
D) dependent on how deep the well is.
Answer: A
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If two benzene rings are linked by an oxygen atom it is an _________linkage.
Fill in the blank(s) with the appropriate word(s).
A mountain climber lies flat on the surface of a glacier that is inclined at 30 degrees below the horizontal. He remains stationary because he is holding onto a rope attached to a spike embedded in the ice further up slope than he is. The rope is parallel to the surface of the ice. If the force of the ice upon his body is 210N, what is the tension in the rope?
A. 121N B. 105N C. 182N D. 364N E. 242N
What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures?
A) 4.1656 × 10-1 B) 4.166 × 10-1 C) 4.17 × 10-1 D) 4.2 × 10-1 E) 4 × 10-1
Conventional automobile efficiencies cannot conceivably be higher than about 25%, even with perfect engineering. This is due to
A) the law of conservation of energy. B) frictional loses inside the car plus unburned hydrocarbons. C) the second law of thermodynamics. D) road friction. E) air resistance plus road friction.