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Question
An iron rod becomes magnetic whenA) opposite ions accumulate at each end.
B) its atoms are aligned.
C) the net spins of many of its electrons are aligned.
D) its electrons stop moving and point in the same direction.
E) none of the above
Answer
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Related questions
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B) one-fourth as far.
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Q:
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B) meets less resistance than the cannon on the ground.
C) acts over a longer distance.
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A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that bounces backward upon impact. The boat
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Q:
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Q:
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B) 12 kg.
C) 16 kg.
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Q:
The speed of a 4-kg ball with a momentum of 12 kg m/s is
A) 3 m/s.
B) 4 m/s.
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Q:
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Q:
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As the sloped surface supporting a shoe becomes steeper
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Q:
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A) less than half her weight.
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Q:
When a cannonball is fired from a cannon, which undergoes the greater acceleration?
A) the cannonball
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C) both the same
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Q:
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A) somewhat greater than Moon's pull on Earth.
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Q:
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A) air resistance acting against the ball.
B) acceleration of the ball.
C) ball's pull on Earth.
D) none of the above
Q:
To produce an acceleration to a system there
A) must be a net force on the system.
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C) must be acceleration outside the system also.
Q:
An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the
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Q:
A fast-moving missile soaring overhead possesses
A) speed.
B) force.
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