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The following information pertains to questions 1-6.  The pressure in a liquid is measured as a function of depth in the liquid for four different liquids. The results are plotted in the figure at the right.
If the pressure at a certain depth ho in the liquid represented by the graph labeled B is Po, the pressure at the same depth in the liquid represented by the graph labeled C would be ___ Po.
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The liquid with the smallest mass density is represented by the graph labeled ___.
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A certain object just barely floats when dropped into a beaker filled with liquid B. If the same object was dropped into a beaker filled with liquid D, the object ___.
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The pressure at a depth ho in the liquid represented by the graph labeled B is Po. The depth in the liquid represented by the graph labeled A at which the pressure will have the same value Po, is ___ ho.
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The mass density of the liquid represented by the graph labeled C is ___ the mass density of the liquid represented by the graph labeled D.
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A certain object just barely floats in a beaker filled with liquid B. If the same object was placed in a beaker filled with liquid A, the object ___.
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The following information pertains to questions 7-9. One pound solid pieces of pine wood, lead and aluminum are dropped over the side of a boat in the middle of a deep fresh water lake. The board floats and the two solid pieces of metal sink. The buoyant force acting on the pine board is ___ the buoyant force acting on the aluminum block.
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The buoyant force acting on the lead block is ___ the buoyant force acting on the aluminum block.
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As the lead block falls toward the bottom of the lake the buoyant force acting on it ___.
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The following information pertains to questions 10-12. A balloon is partially inflated with air, tied to a rock and thrown over the side of the boat into a deep fresh water lake. The rock and balloon sink toward the bottom. As the rock and balloon sink toward the bottom, the magnitude of the buoyant force acting on the balloon ___.
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As the rock and balloon sink toward the bottom, the magnitude of the buoyant force acting on the rock ___.
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As the rock and balloon sink toward the bottom, the speed of the rock ___.
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The following information pertains to questions 13-17.  Consider the laminar flow of an incompressible, non viscous liquid through the plumbing in the figure at the right.
The speed of the fluid at point p1 is ___ the speed of the fluid at point p2.
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The volume of the fluid that flows past point p2 in two seconds is ___ the volume of the fluid that flows past point p5 in two seconds.
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The kinetic energy per unit volume of the liquid at point p1 is ___ the kinetic energy per unit volume of the fluid at point p4.
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The density of the fluid at point p3 is ___ what it is at point p5.
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The pressure in the fluid at point p1 is ___ the pressure at point p3.
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The following information pertains to questions 18 and 19.  A small diameter copper rod is bent in the shape of a V. A straight piece of the same material of length Lo is laid across the V forming a triangle. The device is dipped into a liquid which has surface tension  , forming a film of the material within the triangle. The V is then hung upside down as in the figure at the right and the straight rod moves down slightly coming to equilibrium in a horizontal position a distance do below the apex of the V.
If the overall length of the moveable rod had been a little longer, its equilibrium position below the apex of the V would have been ___ do.
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If the surface tension of the liquid had been more than , when the movable rod came to equilibrium, its position below the apex of the V would have been ___ do.
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