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Question
The main difference between the retina of a human eye and that of a dog's eye is theA) predominance of cones in a dog's retina.
B) absence of cones in a dog's retina.
C) more intricate optic nerve in a human's eye.
D) small number of cones in a human's eye.
E) none of the above
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:
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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 cannonball following a parabolic path explodes into fragments. The momentum of the fragments
A) continue along the path as if the explosion didn't occur.
B) cancels to zero by vector addition.
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A golf ball moving forward with 1 unit of momentum strikes and bounces backward off a heavy bowling ball that is initially at rest and free to move. The bowling ball is set in motion with a momentum of
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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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Q:
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Q:
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A) 4 kg.
B) 12 kg.
C) 16 kg.
D) 144 kg.
E) none of these
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.
E) none of the above
Q:
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A) zero.
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C) four times as much.
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Q:
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As the sloped surface supporting a shoe becomes steeper
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B) the normal force becomes less.
C) friction needed to keep it at rest increases.
D) all of the above
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Q:
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A) less than half her weight.
B) half her weight.
C) more 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.
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
A) combined weight of the arrow and bowstring.
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C) grip of the archer's hand on the bow.
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Q:
A fast-moving missile soaring overhead possesses
A) speed.
B) force.
C) both of these
D) neither of these