Physics - CH 6 concepts
Which of the following statements are true? - The gravitational force between two objects is inversely proportional to the square of the distance between the two objects. - The gravitational force between two objects is inversely proportional to the product of the masses of the two objects. - The gravitational force between two objects is proportional to the product of the masses of the two objects. - The gravitational force between two objects is inversely proportional to the distance between the two objects. - The gravitational force between two objects is proportional to the distance between the two objects. - The gravitational force between two objects is proportional to the square of the distance between the two objects.
- The gravitational force between two objects is inversely proportional to the square of the distance between the two objects. - The gravitational force between two objects is proportional to the product of the masses of the two objects.
Which of the following statements are true? - A satellite's velocity and orbital radius are independent of each other. - The launch speed of a satellite determines the shape of its orbit around Earth. - A geosynchronous satellite has a period of approximately 28 days. - A satellite's motion is independent of its mass.
- The launch speed of a satellite determines the shape of its orbit around Earth. - A satellite's motion is independent of its mass.
Which of the following statements are true? - The path of the planets around the Sun is elliptical in shape. - The Sun is located at the center of the of the planets' circular orbits. - The path of the planets around the Sun is circular in shape. - The Sun is located at one of the foci of the planets' elliptical orbits.
- The path of the planets around the Sun is elliptical in shape. - The Sun is located at one of the foci of the planets' elliptical orbits. Submit
A hypothetical planet has a mass one-third of and a radius three times that of Earth. What is the acceleration due to gravity on the planet in terms of g, the acceleration due to gravity on Earth?
The acceleration due to gravity is g/27.
Two objects attract each other gravitationally. If the mass of each object doubles, how does the gravitational force between them change?
The gravitational force increases by a factor of 4.
Two objects attract each other gravitationally. If the distance between their centers decreases by a factor of 2, how does the gravitational force between them change?
The gravitational force increases by a factor of 4. Submit
Two planets, planet A and planet B, have the same surface gravity. However, planet B has twice the radius of planet A. How does the mass of planet B compare to the mass of planet A?
The mass of planet B is four times the mass of planet A.
An object moves in a circular path at a constant speed. What is the direction of the net force acting on the object?
The net force is directed toward the center of the circular path.
A planet is discovered orbiting around a star in the galaxy Andromeda at the same distance from the star as Earth is from the Sun. If that star has four times the mass of our Sun, how does the orbital period of the planet compare to Earth's orbital period?
The planet's orbital period will be one-half Earth's orbital period.
Why does a satellite in a circular orbit travel at a constant speed?
There is no component of force acting along the direction of motion of the satellite.
