Gravitational Fields
3 years ago
robertsonc
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• Question 1
30 seconds
Q. The definition of gravitational field strength is:
The region of space surrounding a body where other bodies will feel an attractive force due to it.
The region of space surrounding a body where other bodies will feel an repulsive force due to it.
The region of space surrounding a charge where other charges will feel an attractive force due to it.
The region of space surrounding a charge where other charges will feel an repulsive force due to it.
• Question 2
30 seconds
Q. The closer together the gravitational field lines.....
the weaker the gravitational field strength
the stronger the gravitational field strength
the more repulsive the gravitational field strength
• Question 3
30 seconds
Q. How far out from a mass should the gravitational field lines go....
to where the gravitational field becomes negligable
to twice the diameter of the mass
infinitely far
to four times the diameter of the mass
• Question 4
30 seconds
Q. In this equation...
G is the gravitational field strength
r is the distance between the 2 masses
F is the repulsive gravitational force
m is the momentum of the mass
• Question 5
30 seconds
Q. The gravitational field strength of Earth is...
uniform far away from the surface and radial close to the surface
uniform close to the surface and radial far away from the surface
• Question 6
30 seconds
Q. Kepler's third law states that....
An imaginary line drawn from the center of the sun to the center of the planet will sweep out equal areas in equal intervals of time. (The Law of Equal Areas)
The path of the planets about the sun is elliptical in shape, with the center of the sun being located at one focus. (The Law of Ellipses)
The ratio of the squares of the periods of any two planets is equal to the ratio of the cubes of their average distances from the sun. (The Law of Harmonies)
• Question 7
30 seconds
Q. A geostationary satellite orbits the Earth....
once every 24 hours
once every 10-11 hours
once every week
once every 4 weeks
• Question 8
30 seconds
Q. Gravitational potential at a point is....
the work done in bringing a unit mass from infinity to the point
the work done in bringing a unit mass from the point to infinity
the work done in bringing a unit charge from infinity to the point
the work done in bringing a unit mass from twice the radius of the mass to the point
• Question 9
30 seconds
Q. The area under a Force-distance graph is....
the energy lost by the mass
the work done on a mass
the charge on a mass
the potential difference of a mass
• Question 10
30 seconds
Q. The minimum velocity required to leave the atmosphere is called the...