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Gravitational fields - Statistics
General Stats
- This quiz has been taken 6 times
- The average score is 16 of 30
Answer Stats
| Hint | Answer | % Correct |
|---|---|---|
| What is the value of g at the Earth's surface | 9.81 | 100%
|
| What happens to the gravitational field strength as distance increases in a radial field | decreases | 100%
|
| What happens to gravitational field strength as distance increases in a radial field | decreases | 100%
|
| what is the work done per unit mass to move an object from infinity to that point | gravitational potential | 100%
|
| what states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres | newtons law of gravitation | 100%
|
| Is work done when moving along a gravitational equipotential | no | 100%
|
| what represents the distance between the centres of the two bodies | R | 100%
|
| What is the shape of an equipotential surface in a radial gravitational field | spherical | 100%
|
| what do you call a field where g is constant in magnitude and direction at all points | uniform | 100%
|
| Is gravitational field strength a scalar or vector quantity | vector | 100%
|
| What is the gravitational potential at infinity | zero | 100%
|
| what is the force per unit mass due to the gravitational field | gravitational field strength | 67%
|
| What is the relationship between orbital period and speed | inverse | 67%
|
| What is another name for gravitational field strength | acceleration due to gravity | 33%
|
| communication | 33%
| |
| what is the velocity an object needs to escape the gravitational pull of a planet | escape velocity | 33%
|
| what is the work done per unit mass to move an object from one point to another | gravitational potential difference | 33%
|
| What is the unit of gravitational potential | J kg^-1 | 33%
|
| How is the total energy of a satellite found | KE + GPE | 33%
|
| what is time taken for a planet or satellite to complete one full orbit | orbital time period | 33%
|
| what do you call a field that points towards a single point mass | radial | 33%
|
| What type of gravitational fields do point masses have | radial | 33%
|
| what is it when Orbital period of the satellite matches the rotation period of the body it's orbiting | synchronous orbits | 33%
|
| What are the uses of satellites in low orbits | weather monitoring | 33%
|
| What are the uses of geostationary orbits | weather monitoring | 33%
|
| What does gravity act on | all things with mass | 0%
|
| earth observation | 0%
| |
| what are points in a gravitational field where every point has the same gravitational potential | gravitational equipotentials | 0%
|
| What is the shape of an equipotential surface in a uniform gravitational field | horizontal planes | 0%
|
| spy satellites | 0%
|
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