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Question
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point isA) nearer Earth.
B) nearer the Moon.
C) mid-way between Earth and the Moon.
D) none of the above
Answer
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Related questions
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Heat energy is measured in units of
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B) joules.
C) calories.
D) both joules and calories.
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When the temperature of a fixed volume of air initially at 0 C is lowered by 1 degree, its pressure
A) decreases by 1/273.
B) decreases by 100/273.
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D) increases by 100/273.
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Which of these is the smallest?
A) 1 Celsius degree
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Distinguish between the concepts of thermal energy, temperature, and heat.
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Water at 4C will expand when it is slightly
A) cooled.
B) warmed.
C) both of these
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If water at 0C slightly increases in temperature, the water
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If water at 20C slightly increases in temperature, the water
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The operation of a bimetallic strip relies on differences in
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Q:
A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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The moderate temperatures of islands throughout the world has mainly to do with water's
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A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
C) Third law
D) all of the above
Q:
Which law of thermodynamics states that no system can reach absolute zero?
A) First law
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Q:
Two objects move toward each other due to gravity. As the objects get closer and closer, the acceleration of each
A) increases.
B) decreases.
C) is not affected.
Q:
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A) less the gravitational force between them.
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Q:
Consider two planets in space that gravitationally attract each other. If the masses of both planets are doubled, and the distance between them doesn't change, then the force between them is
A) one-quarter.
B) half as much.
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If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
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C) remain the same.
Q:
Newton discovered
A) gravity.
B) that gravity is universal.
C) neither of these
Q:
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A) go into circular orbit about Earth.
B) rise and fall back to Earth's surface.
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An Earth satellite in an elliptical orbit travels slowest when it is
A) nearest the Earth.
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An Earth satellite in an elliptical orbit travels fastest when it is
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C) can't say
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An Earth satellite is simply a projectile
A) freely falling around Earth.
B) floating motionless in space near Earth.
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