Venus rotates once every _______________ Earth days
Fill in the blank(s) with correct word
243
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The escape velocity of an object depends on I. the mass of that object. II. the mass of the object trying to escape. III. the distance from the center of the object and the escaping object. IV. the speed of light
a. I, II, III, & IV b. I & II c. I & III d. I, II, & IV e. I, III, & IV
The runoff channels on Mars were most likely formed by:
A) melting underground ice. B) catastrophic, but rare flooding. C) the annual melting of the polar ice caps. D) glaciers. E) rain that was part of a water cycle.
The impact of meteorites on the Moon has caused
a. craters only. b. rays only. c. rills only. d. both rays and craters.
If 1.0 m3 of concrete weighs 5 × 10^4 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? (The compression strength of concrete is 1.7 × 10^7 N/m2)