One fundamental consequence of the Copernican model which many people had difficulty accepting at the time it was proposed was that the Earth
A) must be moving through space
B) was rotating on its axis
C) must be stationary in space
D) must be smaller than the Sun
A
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Venus has a high reflectivity because of its
A) light-colored rocks. B) snow. C) clouds. D) dust storms. E) volcanic ash.
An empty spice bottle has an inner volume of 1.31 × 10?4 m3. It has a mass of 112 g when filled with air, and it displaces 1.63 × 10?4 m3 of water when fully submerged. What fraction of the total volume of the bottle will be beneath the surface when it is placed in a tank of water?
A. 0.69 B. 0.81 C. 0.85 D. 1.00 E. 1.46
The Earth's density increases with depth. If instead the Earth had uniform density, but the same angular velocity and mass, how would its rotational kinetic energy compare to the actual value?
a. It would be the same as the actual value. b. It would be less than the actual value. c. It would be greater than the actual value. d. More information is needed to find the answer.
Normal galaxies in the present never went through an active galaxy phase
a. True b. False Indicate whether the statement is true or false