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
A liquid has a specific gravity of 0.357. What is its density?
357 kg/m3
643 kg/m3
1000 kg/m3
3570 kg/m3
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.
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
The density of water at _________ is 1g/cm3
-4oC
0oC
Room temperature
4oC
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 C.G.S. system, the unit of density is _______________.
pounds / cubic feet
grams / c.c.
kilogram / cubic meter
has no units
As a rock sinks deeper and deeper into water of constant density, what happens to the buoyant force on it?
It increases.
It remains constant.
It decreases.
It may increase or decrease, depending on the shape of the rock.
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 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
