One-half second after starting from rest, a freely falling object will have a speed of about
A) 20 m/s.
B) 10 m/s.
C) 5 m/s.
D) 2.5 m/s.
E) none of the above
C
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Carbon dioxide moves from the bloodstream to the alveoli through the process of
A. diffusion. B. active transport. C. exocytosis. D. endocytosis.
One of the main factors in the acceleration of the exploitation of Earth's resources is the increase in economic activity
per person. a. True b. False
Rip currents are the result of tidal variations
Indicate whether this statement is true or false.
Which of the following describes the products formed by the dehydration of 2,2,4,4-tetramethyl-3-pentanol?
A) 2,2,4,4-tetramethyl-2-pentene is the only product. B) 2,2,4,4-tetramethyl-3-pentene is the only product. C) 2,2,4,4-tetramethyl-4-pentene is the only product. D) There is no product, since 2,2,4,4-tetramethyl-3-pentanol does not undergo dehydration.