Starting from rest, the distance a freely falling object will fall in 0.5 s is about
A) 0.5 m.
B) 1.0 m.
C) 1.25 m.
D) 5.0 m.
E) none of the above
C
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Which of the following is the tilt of the earth's axis NOT responsible for?
A) the seasons B) different sun angles at different latitudes C) different lengths of day at different latitudes D) length of a day
The term "ladder fuels" refers to ________.
A. an evolutionary hierarchy of flammable plants, from primitive ferns to complex flowering trees B. a hierarchy of carbon-rich flammable materials, from wood to peat, coal, and petroleum products C. extinguishing materials used by urban firefighters D. vegetation of varying heights, which allow fire to quickly climb upward E. fuel made of old woodworking scraps and workbenches
The size of an earthquake is generally related to
A. the amount of accumulated strain. B. the amount of ductile deformation. C. the type of the fault involved. D. the number of faults involved.
Why are pest predator populations so adversely affected by broad-spectrum pesticides?
A. Predator populations are not more likely to be adversely affected B. In general, predators are more susceptible to the pesticides C. Broad-spectrum pesticides leave more residues than other pesticides and kill the predators D. There is less food for the predators when the pest species is destroyed E. Predators in higher trophic levels are more likely to be wiped out than lower trophic levels