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Question
A floating leaf oscillates up and down two complete cycles in one second as a 10-meter long water wave passes by. What is the wave's speed?A) 2 m/s
B) 10 m/s
C) 20 m/s
D) 40 m/s
E) more than 40 m/s
Answer
This answer is hidden. It contains 1 characters.
Related questions
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If the speed of a bicycle is reduced to half before skidding to a stop, it will skid
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B) one-fourth as far.
C) one-half as far.
D) none of the above
Q:
A cannonball has more kinetic energy than the recoiling cannon from which it is fired because the force on the ball
A) is more concentrated.
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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A) less than 1/10 as great.
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Q:
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Q:
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A) 4 kg.
B) 12 kg.
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D) 144 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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D) 48 m/s.
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Q:
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A) zero.
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Q:
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As the sloped surface supporting a shoe becomes steeper
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C) friction needed to keep it at rest increases.
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A) remains equal to mg at all angles.
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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
B) the recoiling cannon
C) both the same
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B) lighter car.
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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.
B) may or may not be a net force on the system.
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
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B) force.
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