____ orbit is one in which an object orbiting Earth has an orbital period equal to the rotation period of Earth
a. A daily
b. A lunar
c. An epicycle
d. A geosynchronous
e. An open
d
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The orbits of most asteroids:
A) lie beyond Neptune. B) lie entirely beyond the orbit of Mars. C) cross the orbit of Mars. D) cross the orbit of Earth. E) cross the orbits of all four terrestrial planets.
If a solid iron ball is dropped at the surface of the deepest spot in the ocean (the Marianis Trench, about 11 km deep) what would you expect to happen?
1.It would sink to the bottom. 2.It would sink, but it would remain suspended at some great depth before reaching the bottom. 3.It would float near the surface because it is so deep here. 4.It is impossible to tell.
2 waves traveling in opposite directions on a rope meet and undergo complete destructive interference. Which of the following best describes the waves a moment after the waves meet and coincide?
a. The waves no longer exist. b. The waves continue unchanged. c. The waves reflect and travel backward. d. A single wave continues along the rope.
The rotation curve of a galaxy can be used to determine
a. the relative number of hot young stars in the galaxy. b. the relative amount of gas and dust in the galaxy. c. the radius of the galaxy. d. the luminosity of the galaxy. e. the mass of the galaxy.