Rate this statement: No force due to Earth's gravity acts on astronauts inside the orbiting space station
A) always true while in orbit
B) sometimes true while in orbit
C) always false
Answer: C
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What would happen to Earth's temperature if you painted the entire surface of the Earth white?
A) Its temperature would not change. B) Its average temperature would go down. C) Its average temperature would go up.
f the distance between two point charges remains constant while the size of one of the charges is quadrupled, the force between the charges is multiplied by
A. 1/4 B. 2 C. 4 D. 16
The absolute temperature of an ideal gas is directly proportional to which of the following properties, when taken as an average, of the molecules of that gas?
a. speed b. momentum c. mass d. kinetic energy
The most abundant rocks in Earth's crust are the
a. sulfides. b. oxides. c. carbonates. d. silicates.