According to Newton's theory of gravity, why does the Moon have a much lower acceleration than a falling object on Earth?
a. Because the Moon is so heavy.
b. Because the Moon is close to Earth's center.
c. Because the Moon is lighter than Earth.
d. Because the Moon is farther away from Earth's center than the object falling at Earth's surface.
e. Because the Moon has its own gravitational field.
d
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Which of the following is a eutectoid reaction?
Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal expansion coefficient of the aluminum is 24. × 10-6 (C°)-1,
and if the temperature of the rod increases by 1.0 C°, how high off the ground would the expanded ring be (assuming uniform space all around)?
Compare and contrast the Galileo and Cassini missions
What will be an ideal response?
What property of a molecular cloud does not counteract gravitational contraction?
A) thermal pressure B) turbulent motions C) magnetic fields D) fragmentation