Radar maps of Venus show impact craters
a. True
b. False
Indicate whether the statement is true or false
True
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If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the left of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is
A. 50 m to the right. B. 50 m to the left. C. 30 m to the right. D. 30 m to the left. E. 10 m to the left.
The speed of light is 300,000 km/s. How far is a light-year? Be sure to show all work clearly on your calculations.
What will be an ideal response?
The farthest galaxies from the Milky Way appear to be receding from us at the rate of 76,000 miles/sec. An observer in one of these distant galaxies would consider our galaxy to be
A. moving away at 76,000 miles/sec. B. standing still but not at the center of the universe. C. moving at 76,000 miles/sec and located at the center of the universe. D. one of the few moving galaxies in the universe. E. standing still at the center of the universe.
If there had never been any galactic collisions, all galaxies today would probably be ________
Fill in the blank(s) with correct word