The number of daylight hours at 35°N is greatest during the month of
a. May.
b. August.
c. June.
d. July.
c
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A bullet shot straight up returns to its starting point in 10 s. What is the initial speed of the bullet, assuming no air?
A) 9.8 m/s B) 25 m/s C) 49 m/s D) 98 m/s
Along the open ocean, barrier islands are zones of
A) relatively quiet waters. B) deposited sand ridges formed offshore and parallel to the coast. C) intense vegetation growth. D) eroded sand ridges.
Determine the heat capacity (in calories/°C) of a lake containing one million gallons (approximately 4 million kilograms) of water at 15°C.
A. 4 × 106 B. 4 × 109 C. 4 × 103 D. 1 × 103 E. 4 × 102
Is it possible to prove, for certain, that a scientific theory is true?
A) Yes, by means of a single confirmed experiment that verifies the theory. B) Yes, by carrying out a sufficient number of experimental observations. C) Yes, by deducing it logically from other scientific theories that are known to be true. D) No, because it is always possible that a future experiment will disagree with the theory. E) No, because of the experimental error, or uncertainty, that is always present in any experimental result.