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Question
Buoyant force acts upward on a submerged object becauseA) it acts in a direction to oppose gravity.
B) the weight of fluid displaced reacts with an upward force.
C) pressure against its bottom is greater than pressure against its top.
D) none of the above
Answer
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Related questions
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Q:
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Q:
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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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C) friction needed to keep it at rest increases.
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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.
D) her weight.
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
Q:
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A) heavier car.
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Q:
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A) somewhat greater than Moon's pull on Earth.
B) the only force acting between Earth and Moon.
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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.
B) friction of the ground against the archer's feet.
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D) arrow's push against the bowstring.
Q:
A fast-moving missile soaring overhead possesses
A) speed.
B) force.
C) both of these
D) neither of these