A bullet fired horizontally hits the ground in 0.5 s. If it had been fired with twice the speed in the same direction, it would have hit the ground in
A) less than 0.5 s.
B) more than 0.5 s.
C) 0.5 s.
C
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In a battery, the following oxidation-reduction reaction is taking place: Mn2O3 + ZnO ? 2 MnO2 + Zn What is undergoing reduction as written?
A. ZnO B. Zn C. MnO2 D. Mn2O3 E. none of the above
Which of the following is NOT a problem of subsistence agriculture?
A) It is subject to soil and precipitation variability. B) a lack of tools and high yielding seed C) Non-food crops, such as sugar and jute, become attractive to subsistence farmers due to the high prices they can get on the export market. D) Subsistence farmers can often barely provide for their families. E) Subsistence farmers suffer from a lack of capital.
The Suez Canal, Bosporus, and Strait of Hormuz are examples of _______________ because they are strategic passageways that may be closed off by force or threat of force
Fill in the blank(s) with correct word
Which of the following factors influence surface temperatures? Choose all that apply.
A) The presence of ocean currents B) The angle of incidence of the Sun C) The presence of land D) The distance of the Earth from the Sun