Physics quiz 12
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Specific gravity has units of
it is dimensionless
When the speed of a fluid in a pipe increases,
the pressure ____.
The buoyant force on a submerged object depends on the shape of the object.
The buoyant force on a solid object placed in a liquid is always equal to
weight of the liquid displaced
In order to obtain a large pressure you must
have a large force.
Water flows through a wide pipe at point A and into a narrow pipe at point B. Water squirts
upward from leaks at both points. The
squirt is highest at point
The hydraulic lift is an application of
The pressure at the bottom of a filled glass of water (ρ= 1000 kg/m3) is P. The water is
poured out and the glass is filled with ethyl alcohol
(ρ = 806 kg/m3). What is the pressure at the
bottom of the glass?
smaller than P
An apple is held completely submerged just below the surface of a container of water. The apple is then moved to a deeper point in the water. Compared with the force needed to hold the apple just below the surface, what is the force needed to hold it at a deeper point?
The water in each of three vessels of different shapes has the same weight. Rank the pressures on the bottoms of the vessels from highest to lowest.
B A C
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