Variation of Gravitational Field with Altitude and Depth

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Questions and Answers

What are the possible effects of an applied force, based on the text?

  • Change the taste of an object
  • Change the state of rest (correct)
  • Change the internal structure of an object
  • Change the color of an object

Which statement accurately defines acceleration due to gravity?

  • The force that changes the color of an object
  • A force that changes the shape of an object
  • The gravitational force due to Earth that causes an object to accelerate (correct)
  • A force that results in a change in the direction of an object

What is the acceleration due to gravity at the center of the Earth?

  • Zero (correct)
  • 9.77 m/s^2
  • -9.77 m/s^2
  • 5 m/s^2

How does Kepler's second law relate to the motion of planets around the Sun?

<p>It indicates that planets sweep equal areas in equal times around the Sun. (A)</p> Signup and view all the answers

What does Kepler's third law suggest about the relationship between a planet's time period and its distance from the Sun?

<p>The time period is directly proportional to the distance cubed. (B)</p> Signup and view all the answers

What is the formula for calculating gravitational acceleration?

<p>$F = \frac{GMm}{R^2}$ (B)</p> Signup and view all the answers

What does Newton's inverse square law of gravity describe?

<p>The force between two masses decreases as the inverse square of their distance apart. (B)</p> Signup and view all the answers

In which scenario does escape velocity play a critical role?

<p>When launching rockets into space (D)</p> Signup and view all the answers

What aspect of a moving object does gravitational acceleration primarily affect?

<p>Speed of the moving object (A)</p> Signup and view all the answers

Which factor influences a planet's speed in its orbit around a star?

<p>The gravitational pull from the star (B)</p> Signup and view all the answers

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