1. A satellite orbits the earth with constant speed at height above the surface equal to the earth’s radius. The magnitude of the satellite’s acceleration is 1. g on earth. 2. g on earth. 3. g on earth. 4. 2g on earth. 5. 4g on earth.

2. A satellite orbits the earth with constant speed at height above the surface equal to the earth’s radius. The magnitude of the satellite’s acceleration is 1. g on earth. 2. g on earth. 3. g on earth. 4. 2g on earth. 5. 4g on earth.

3. 1. one quarter as big. 2. half as big. 3. twice as big. 4. four times as big. 5. the same size. The figure shows a binary star system. The mass of star 2 is twice the mass of star 1. Compared to, the magnitude of the force is

4. 1. one quarter as big. 2. half as big. 3. twice as big. 4. four times as big. 5. the same size. The figure shows a binary star system. The mass of star 2 is twice the mass of star 1. Compared to, the magnitude of the force is

5. A planet has 4 times the mass of the earth, but the acceleration due to gravity on the planet’s surface is the same as on the earth’s surface. The planet’s radius is 1. R e. 2. R e. 3. R e. 4. 2R e. 5. 4R e.

6. A planet has 4 times the mass of the earth, but the acceleration due to gravity on the planet’s surface is the same as on the earth’s surface. The planet’s radius is 1. R e. 2. R e. 3. R e. 4. 2R e. 5. 4R e.

7. In absolute value: 1. U e > U a = U b = U d > U c 2. U b > U c > U a = U d > U e 3. U b > U c > U d > U a > U e 4. U e > U a = U b >U c > U d 5. U e > U d > U a > U b = U c Rank in order, from largest to smallest, the absolute values |U g | of the gravitational potential energies of these pairs of masses. The numbers give the relative masses and distances.

8. In absolute value: 1. U e > U a = U b = U d > U c 2. U b > U c > U a = U d > U e 3. U b > U c > U d > U a > U e 4. U e > U a = U b >U c > U d 5. U e > U d > U a > U b = U c Rank in order, from largest to smallest, the absolute values |U g | of the gravitational potential energies of these pairs of masses. The numbers give the relative masses and distances.

9. The gravitational force between two objects of masses m 1 and m 2 that are separated by distance r is 1. proportional to r. 2. proportional to 1/r. 3. proportional to 1/r 2. 4. (m 1 + m 2 )g. 5. (m 1 + m 2 )G.

10. The gravitational force between two objects of masses m 1 and m 2 that are separated by distance r is 1. proportional to r. 2. proportional to 1/r. 3. proportional to 1/r 2. 4. (m 1 + m 2 )g. 5. (m 1 + m 2 )G.

11. The value of g at the height of the space shuttle’s orbit is 1. 9.8 m/s 2. 2. slightly less than 9.8 m/s 2. 3. much less than 9.8 m/s 2. 4. exactly zero.

12. The value of g at the height of the space shuttle’s orbit is 1. 9.8 m/s 2. 2. slightly less than 9.8 m/s 2. 3. much less than 9.8 m/s 2. 4. exactly zero.