You are at mission control on the moon, in charge of launching a moon-orbiting communications satellite. If you want your satellite at an altitude of 100 km, what orbital velocity is required? The radius of the moon is 1.74x106 m. The mass of the moon is 7.26 x 1022 kg.
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Question 2
2.
The accompanying chart gives the mass and orbital period (time it takes to go around the Earth) of each of four satellites, A, B, C, and D, orbiting Earth in circular paths. Which satellite is closest to the Earth?
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Question 3
3.
The earth is 1 Astronomical Unit from the sun and its period of revolution is 1 year. If a planet is 36 Astronomical Units from the sun, what is its period of revolution?
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Question 4
4.
The table below shows gravitational data for a planet traveling in an elliptical orbit around a star. The table shows the relative gravitational force between the star and this planet at eight positions in the orbit (letters A through H). Higher numbers indicate stronger gravitational attraction.
Which diagram best represents the positions of the planet in its orbit that would produce the gravitational forces shown in the data table?
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Question 5
5.
Which diagram shows a planet with the least eccentric orbit?
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Question 6
6.
The diagram below represents the position of Earth in its orbit and the position of a comet in its orbit around the Sun.
Which inference can be made about the comet's orbit, when it is compared to Earth's orbit?
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Question 7
7.
In order for a satellite to remain in orbit, the satellite must have reached the required orbital
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Question 8
8.
The data table shown gives the mean radius of orbit R and the period T of some planets orbiting the Sun. Which ratio is constant for these planets?
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Question 9
9.
The diagram below shows a comet in an elliptical orbit around a star.
Which arrow indicates the direction of the gravitational force the star exerts on the comet when the comet is in the position shown?
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Question 10
10.
Which statement describes the motion of Earth around the sun?
