A 10-N block and a 1-N block lie on a horizontal frictionless table. To push them with equal acceleration, we would have to push with
A) equal forces on each block.
B) 10 times as much force on the heavier block.
C) 10 squared or 100 times as much force on the heavier block.
D) one-tenth as much force on the heavier block.
E) none of the above
B
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Which class of glycerophospholipids can be phosphorylated to yield molecules which serve as signaling molecules?
A) cephalins B) lecithins C) phosphatidylinositols D) all of these
A cloud-to-ground lightning discharge will sometimes appear to flicker. This is because?
a. ?you are able to see charges. b. ?you are barely able to distinguish separate return strokes. c. ?the bright light causes you to blink. d. ?of refraction caused by turbulent thunderstorm winds. e. ?your eyes momentarily get blinded by lightning.
The design of engineering structures should take into consideration:
a. magnitude-frequency relationships of geologic events b. potential risks to life and property c. costs of construction d. all of the above
The term that describes the condition of the air when the relative humidity is 100% is
A) sublimation. B) saturation. C) evaporation. D) deposition. E) transpiration.