In the Ptolemaic system, Venus should not show phases
Indicate whether the statement is true or false
FALSE
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________ clusters are blue in color and diffuse
Fill in the blank(s) with correct word
A 3.00 kg object is moving at 5.00 m/s EAST. It strikes a 6.00 kg that is moving EAST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 3.00 kg object after the collision is
A. 4.00 m/s EAST. B. 1.00 m/s EAST. C. 4.00 m/s WEST. D. 1.00 m/s WEST. E. 3.00 m/s EAST.
This photo was taken from orbit around some planet. What planet is it, and how do you know?
A) Mars because we see dried up riverbeds B) the Moon because it has craters C) Venus because of its yellowish color D) Mercury because we see gigantic cliffs
Two artificial satellites are in circular orbits about the Earth. Which of the two will be moving more slowly along its orbit?
A. The lower one B. The one with the smaller mass C. The higher one D. The one with the larger mass