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5/31 MCQs for:
Gravitational fields
The average distance from the Earth to the Sun is defined as one 'astronomical unit' (AU). An asteroid orbits the Sun in one-third of a year. What is the asteroid's average distance from the sun?
Satellite A has twice the mass of satellite B, and rotates in the same orbit. Compare the two satellite's speeds.
An astronaut goes out for a 'space-walk' at a distance above the Earth equal to the radius of the Earth. What is her acceleration due to gravity?
The planet Jupiter is 7.78 x 1011 m from the Sun. How long does it take for Jupiter to orbitonce about the Sun? (The distance from the Earth to the Sun is 1.50 x 1011 m.)
A satellite encircles Mars at a distance above its surface equal to 3 times the radius of Mars. The acceleration of gravity of the satellite, as compared to the acceleration of gravity on the surface of Mars, is: