A wooden boat with a density of 0.48 g/cc is floating in a vat of oil whose density is 0.80 g/cc. What percentage of the boat is floating above the surface of the oil?
42 %
52 %
60 %
40 %
In the case of a liquid which of the following is correct.
Have a definite shape but have no definite volume
Have no definite shape and no definite volume
Have no definite shape but have a definite volume
Have a definite shape and have a definite volume
A piece of unknown material has an intricate shape. It has a mass of 126 g. You submerge it to find it displace 422 ml of water. What is the specific gravity of the piece.
0.30
3.35
1.26
0.53
If the density of granite is 2.7×103kg/m3, what is the largest possible height for solid cylindrical pillar of radius 25 cm with a mass of 750 kg?
0.35 m
0.71 m
1.4 m
3.1m
An object is placed in a fluid. The buoyant force on the object is proportional to
The density of the object.
Density of the fluid
The volume of the object.
Both A and B
A cube has a side of 5 cm. It has a mass of 250 grams. The density of the cube is
50 g/cm3 and will float in water.
2.0 g/cm3 and will float in water
50 g/cm3 and will sink in water
2.0 g/cm3 and will sink in water
The relative density of silver is 10.8. If the density of water be 1.0 x 103 kg m-3,calculate the density of silver in SI units.
10.8 x 103 kg m-3
1.08 x 103 kg m-3
9.2 x 103 kg m-3
none of these
Hydrometer is used for measuring _____________.
volume of a liquid
mass of a liquid
velocity of a liquid
specific gravity of a liquid
Why does a duck float?
The weighs less than water.
The duck can swim
The duck has feathers.
The duck has smaller density than water.
In a ___________ hydrometer the body is made to immerse always to the same extent whatever the liquid may be.
variable immersion
common
Nicholson’s
invariable
