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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?
What is the gravitational force on a 70-kg person standing on the Earth, due to the Moon? The mass of the Moon is 7.36 x 1022 kg and the distance to the Moon is 3.82 x 108 m.

Who was the first person to realize that the planets move in elliptical paths around the Sun?

The gravitational force between two objects is inversely proportional to:
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.)