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Question
The radius of Earth's mantle is aboutA) 870 km.
B) 2900 km.
C) 1050 km.
D) 5800 km.
Answer
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Related questions
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A change in motion requires a(n) ____________.
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C) linear momentum.
D) angular momentum.
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A) 0.0 N
B) 6.1 N
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Newton's law of universal gravitation is believed to be applicable
A) to the Milky Way only.
B) on Earth and the Moon only.
C) throughout the universe.
D) to the solar system only.
E) on Earth only.
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In the equation A = B/C, the A and B are said to be _______________ proportional.
A) directly
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Newton's third law of motion states that the force pair acting on different objects consists of two forces that
A) are under the influence of gravity.
B) are equal and in the same direction.
C) always produce an acceleration.
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______________ principle explains why objects float or sink in a fluid.
A) Newton's
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A) 40 N
B) 1.6 N
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A spacecraft in space keeps going at the same velocity, even without firing its rockets, in accordance with the _______________ law of motion.
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The magnitude of the acceleration of an object moving in a circle at constant speed is
A) inversely proportional to the speed squared.
B) inversely proportional to the speed.
C) inversely proportional to the radius of the circle squared.
D) inversely proportional to the radius of the circle.
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The direction of the acceleration of an object moving in a circle at constant speed is
A) changing, but pointing in a predictable direction.
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A freely falling object
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