What is the acceleration of gravity of Earth?
A) 9.8 m/s2 downward
B) 9.8 m/s downward
C) 9.8 km/s2 downward
D) 9.8 m2/s downward
E) 9.8 km/s downward
A
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Which of the following factors in the simplified Drake equation is best known?
A) Nhp, the number of habitable planets in our galaxy B) fciv, fraction of life-bearing planets where intelligent civilizations have arisen at any time C) fnow, fraction of civilization-bearing planets that have intelligent civilizations on them now D) flife, fraction of life-bearing habitable planets
The simplest member of the alkane series is named ______________
Fill in the blank(s) with correct word
The downslope movement of surface materials as a result of gravity and of the agents that cause such movement is called
a. erosion. b. gradation. c. landslides. d. none of these.
What is the charge on 1.0 kg of protons? (e = 1.60 × 10-19 C, mproton = 1.67 × 10-27 kg)
A) 1.0 C B) 1000 C C) 9.6 × 107 C D) 6.0 × 1026 C E) 6.0 × 1023 C