1.
|
|
The following statements refer to man-made, artificial satellites in orbit around earth. Which is an accurate statement?
|
| It is possible to have a satellite traveling at either a high speed or at a low speed in a given circular orbit. |
| Only circular orbits (and not elliptical ones) are possible for artificial satellites. |
| A satellite in a large diameter circular orbit will always have a longer period of revolution about the earth than will a satellite in a smaller circular orbit. |
| The velocity required to keep a satellite in a given orbit depends on the mass of the satellite. |
|
2.
|
|
A cannon ball is fired horizontally off a high cliff over a great distance. If air resistance can be ignored the path it follows is
|
| part of a parabola. |
| part of a circle. |
| a hyperbola. |
| part of an ellipse. |
|
3.
|
|
The period of a geosychronous satellite must be
|
| exactly 4 hours |
| any number less than 24 hours.. |
| exactly 24 hours. |
| any number greater than 24 hours. |
|
4.
|
|
Two bodies of equal mass are separated by a distance R. If you double the distance between them the new gravitational force will be
|
| twice the old force. |
| half the old force. |
| four times the old force. |
| one fourth the old force. |
| The same as the old force. |
|
5.
|
|
Two bodies of equal mass are separated by a distance R. If you double each mass then the new force will be
|
| twice the old force. |
| half the old force. |
| four times the old force. |
| one fourth the old force. |
| the same as the old force. |
|
6.
|
|
Two bodies of equal mass are separated by a distance R. If you double one mass then the new force will be
|
| twice the old force. |
| half the old force. |
| four times the old force. |
| one fourth the old force. |
| the same as the old force. |
|
7.
|
|
Two bodies of equal mass are separated by a distance R. If you double each mass and double the distance between them, the new force will be
|
| twice the old force. |
| half the old force. |
| four times the old force. |
| one fourth the old force. |
| the same as the old force. |
|
8.
|
|
The Earth moves faster in the winter when its closest to the Sun. This is an example of
|
| Newton's Law of Gravity. |
| Kepler's First Law. |
| Kepler's Second Law. |
| Kepler's Third Law. |
|
9.
|
|
The path of each planet about the sun is an ellipse with ths sun at
|
| the center. |
| one focus. |
| centered between the two foci. |
| on the apex. |
|
10.
|
|
Kepler's Third Law can be used to relate the motions of the
|
| Moon and the Earth. |
| Moon and the Space Shuttle. |
| Earth and the Sun. |
| Moon and the Sun. |
|
11.
|
|
If the mass of the earth was quadrupled and nothing else was changed
|
| g would increase by a factor of 4. |
| g would increase by a factor of 2. |
| g would decrease by a factor of 1/2. |
| g would decrease by a factor of 1/4. |
|
12.
|
|
A planet with twice the mass and twice its radius has a value of g
|
| four times that of Earth. |
| two times that of Earth. |
| 1/2 that of Earth. |
| 1/4 that of Earth. |
|
13.
|
|
Four equal masses are arranged in a perfect square. The direction of the force on the one in the lower left hand corner
|
| depends on the value of the mass. |
| is at 45 degrees. |
| is at 225 degrees. |
| zero. |
|
14.
|
|
Four equal masses are arranged in a perfect square. The magnitude of the force on the one in the lower left hand corner due to the one diagonally across from it
|
| would be equal to the magnitude force from either of the other two bodies. |
| would be equal to the magnitude of the sum of the forces of the other two bodies. |
| would be half the magnitude of the force from either of the other two masses. |
| would equal twice the magnitude of the force from either of the other masses. |
|
15.
|
|
The speed of a satellite in orbit does not depend on
|
| its mass. |
| the mass of the Earth. |
| its distance above the Earth's surface. |
|
16.
|
|
The period of planet X is .62 Earth years and that of planet Y is 1.9 years.
|
| Planet Y is closer to the Sun than planet X. |
| Planet Y is closer to the Sun than Earth. |
| The Earth is closer to the Sun than planet X. |
| The Earth is between planet X and planet Y. |
|
17.
|
|
Which of the following does not belong with the others?
|
| A person jumping off a diving board. |
| A high jumper. |
| A person standing on a scale. |
| An astronaut in an earth orbit doing a free space walk. |
|
18.
|
|
 In the fictional solar system at the left the blue planet has the same mass and radius as the earth. The red planet has the same mass and half the radius, while the green planet has the same mass and twice the radius. Which planet has the lowest escape velocity?
|
| red planet |
| blue planet |
| green planet |
|
19.
|
|
In question 18 which has the highest eascape velocity?
|
| red planet |
| blue planet |
| green planet |
|
20.
|
|
 In the fictional solar system at the left the blue planet has the same mass and radius as the earth. The red planet has the same radius and half the mass, while the green planet has the same radius and twice the mass. Which planet has the lowest escape velocity?
|
| red planet |
| blue planet |
| green planet |
|
21.
|
|
In problem 20 which has the highest eacape velocity?
|
| red planet |
| blue planet |
| green planet |
|
22.
|
|
The orbital transfer shown in the figure is called a
|
| orbit transfer |
| Hohmann Transfer |
| Ryan Maneuver |
| Compton Swing |
|
23.
|
|
In the previous question at point 1 you have ________ and at 2 ___________?
|
| a retro thrust, an accelerating thrust |
| a retro thrust, an accelerating thrust |
| a accelerating thrust, an accelerating thrust |
| a retro thrust, a retro thrust |
|
24.
|
|
In the figure, at point 1 you have ________ and at 2 ___________?
|
| an accelerating thrust, an accelerating thrust |
| a retro thrust, an accelerating thrust |
| an accelerating thrust, a retro thrust |
| a retro thrust, a retro thrust |
|
25.
|
|
 Four identical masses are shown in the figure. The mass of each is chosen so that Gmm=1. What is the total potential energy of the system?
|
| -1.35 J |
| -2.71 J |
| -5.42 J |
| 1.35 J |
